diff -druNp --no-dereference linux-libre-3.18.26-gnu/arch/arm/boot/dts/sama5d4.dtsi linux-libre-3.18.27-gnu/arch/arm/boot/dts/sama5d4.dtsi
--- linux-libre-3.18.26-gnu/arch/arm/boot/dts/sama5d4.dtsi	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/arch/arm/boot/dts/sama5d4.dtsi	2016-02-15 15:47:06.000000000 -0500
@@ -985,7 +985,7 @@
 			dbgu: serial@fc069000 {
 				compatible = "atmel,at91sam9260-usart";
 				reg = <0xfc069000 0x200>;
-				interrupts = <2 IRQ_TYPE_LEVEL_HIGH 7>;
+				interrupts = <45 IRQ_TYPE_LEVEL_HIGH 7>;
 				pinctrl-names = "default";
 				pinctrl-0 = <&pinctrl_dbgu>;
 				clocks = <&dbgu_clk>;
diff -druNp --no-dereference linux-libre-3.18.26-gnu/arch/arm/boot/dts/ste-nomadik-stn8815.dtsi linux-libre-3.18.27-gnu/arch/arm/boot/dts/ste-nomadik-stn8815.dtsi
--- linux-libre-3.18.26-gnu/arch/arm/boot/dts/ste-nomadik-stn8815.dtsi	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/arch/arm/boot/dts/ste-nomadik-stn8815.dtsi	2016-02-15 15:47:06.000000000 -0500
@@ -117,7 +117,7 @@
 			mmcsd_default_mux: mmcsd_mux {
 				mmcsd_default_mux {
 					ste,function = "mmcsd";
-					ste,pins = "mmcsd_a_1";
+					ste,pins = "mmcsd_a_1", "mmcsd_b_1";
 				};
 			};
 			mmcsd_default_mode: mmcsd_default {
@@ -127,9 +127,9 @@
 					ste,output = <0>;
 				};
 				mmcsd_default_cfg2 {
-					/* MCCMDDIR, MCDAT0DIR, MCDAT31DIR */
+					/* MCCMDDIR, MCDAT0DIR, MCDAT31DIR, MCDATDIR2 */
 					ste,pins = "GPIO10_C11", "GPIO15_A12",
-					"GPIO16_C13";
+					"GPIO16_C13", "GPIO23_D15";
 					ste,output = <1>;
 				};
 				mmcsd_default_cfg3 {
diff -druNp --no-dereference linux-libre-3.18.26-gnu/arch/arm/net/bpf_jit_32.c linux-libre-3.18.27-gnu/arch/arm/net/bpf_jit_32.c
--- linux-libre-3.18.26-gnu/arch/arm/net/bpf_jit_32.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/arch/arm/net/bpf_jit_32.c	2016-02-15 15:47:06.000000000 -0500
@@ -161,19 +161,6 @@ static inline int mem_words_used(struct
 	return fls(ctx->seen & SEEN_MEM);
 }
 
-static inline bool is_load_to_a(u16 inst)
-{
-	switch (inst) {
-	case BPF_LD | BPF_W | BPF_LEN:
-	case BPF_LD | BPF_W | BPF_ABS:
-	case BPF_LD | BPF_H | BPF_ABS:
-	case BPF_LD | BPF_B | BPF_ABS:
-		return true;
-	default:
-		return false;
-	}
-}
-
 static void jit_fill_hole(void *area, unsigned int size)
 {
 	u32 *ptr;
@@ -185,7 +172,6 @@ static void jit_fill_hole(void *area, un
 static void build_prologue(struct jit_ctx *ctx)
 {
 	u16 reg_set = saved_regs(ctx);
-	u16 first_inst = ctx->skf->insns[0].code;
 	u16 off;
 
 #ifdef CONFIG_FRAME_POINTER
@@ -215,7 +201,7 @@ static void build_prologue(struct jit_ct
 		emit(ARM_MOV_I(r_X, 0), ctx);
 
 	/* do not leak kernel data to userspace */
-	if ((first_inst != (BPF_RET | BPF_K)) && !(is_load_to_a(first_inst)))
+	if (bpf_needs_clear_a(&ctx->skf->insns[0]))
 		emit(ARM_MOV_I(r_A, 0), ctx);
 
 	/* stack space for the BPF_MEM words */
diff -druNp --no-dereference linux-libre-3.18.26-gnu/arch/arm64/kernel/setup.c linux-libre-3.18.27-gnu/arch/arm64/kernel/setup.c
--- linux-libre-3.18.26-gnu/arch/arm64/kernel/setup.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/arch/arm64/kernel/setup.c	2016-02-15 15:47:06.000000000 -0500
@@ -503,6 +503,10 @@ static int c_show(struct seq_file *m, vo
 		seq_printf(m, "processor\t: %d\n", i);
 #endif
 
+		seq_printf(m, "BogoMIPS\t: %lu.%02lu\n",
+			   loops_per_jiffy / (500000UL/HZ),
+			   loops_per_jiffy / (5000UL/HZ) % 100);
+
 		/*
 		 * Dump out the common processor features in a single line.
 		 * Userspace should read the hwcaps with getauxval(AT_HWCAP)
diff -druNp --no-dereference linux-libre-3.18.26-gnu/arch/arm64/mm/pageattr.c linux-libre-3.18.27-gnu/arch/arm64/mm/pageattr.c
--- linux-libre-3.18.26-gnu/arch/arm64/mm/pageattr.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/arch/arm64/mm/pageattr.c	2016-02-15 15:47:06.000000000 -0500
@@ -54,6 +54,9 @@ static int change_memory_common(unsigned
 	if (!is_module_address(start) || !is_module_address(end - 1))
 		return -EINVAL;
 
+	if (!numpages)
+		return 0;
+
 	data.set_mask = set_mask;
 	data.clear_mask = clear_mask;
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/arch/m32r/kernel/setup.c linux-libre-3.18.27-gnu/arch/m32r/kernel/setup.c
--- linux-libre-3.18.26-gnu/arch/m32r/kernel/setup.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/arch/m32r/kernel/setup.c	2016-02-15 15:47:06.000000000 -0500
@@ -81,7 +81,10 @@ static struct resource code_resource = {
 };
 
 unsigned long memory_start;
+EXPORT_SYMBOL(memory_start);
+
 unsigned long memory_end;
+EXPORT_SYMBOL(memory_end);
 
 void __init setup_arch(char **);
 int get_cpuinfo(char *);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/arch/mips/net/bpf_jit.c linux-libre-3.18.27-gnu/arch/mips/net/bpf_jit.c
--- linux-libre-3.18.26-gnu/arch/mips/net/bpf_jit.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/arch/mips/net/bpf_jit.c	2016-02-15 15:47:06.000000000 -0500
@@ -556,19 +556,6 @@ static inline u16 align_sp(unsigned int
 	return num;
 }
 
-static bool is_load_to_a(u16 inst)
-{
-	switch (inst) {
-	case BPF_LD | BPF_W | BPF_LEN:
-	case BPF_LD | BPF_W | BPF_ABS:
-	case BPF_LD | BPF_H | BPF_ABS:
-	case BPF_LD | BPF_B | BPF_ABS:
-		return true;
-	default:
-		return false;
-	}
-}
-
 static void save_bpf_jit_regs(struct jit_ctx *ctx, unsigned offset)
 {
 	int i = 0, real_off = 0;
@@ -690,7 +677,6 @@ static unsigned int get_stack_depth(stru
 
 static void build_prologue(struct jit_ctx *ctx)
 {
-	u16 first_inst = ctx->skf->insns[0].code;
 	int sp_off;
 
 	/* Calculate the total offset for the stack pointer */
@@ -704,7 +690,7 @@ static void build_prologue(struct jit_ct
 		emit_jit_reg_move(r_X, r_zero, ctx);
 
 	/* Do not leak kernel data to userspace */
-	if ((first_inst != (BPF_RET | BPF_K)) && !(is_load_to_a(first_inst)))
+	if (bpf_needs_clear_a(&ctx->skf->insns[0]))
 		emit_jit_reg_move(r_A, r_zero, ctx);
 }
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/arch/parisc/include/uapi/asm/siginfo.h linux-libre-3.18.27-gnu/arch/parisc/include/uapi/asm/siginfo.h
--- linux-libre-3.18.26-gnu/arch/parisc/include/uapi/asm/siginfo.h	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/arch/parisc/include/uapi/asm/siginfo.h	2016-02-15 15:47:06.000000000 -0500
@@ -1,6 +1,10 @@
 #ifndef _PARISC_SIGINFO_H
 #define _PARISC_SIGINFO_H
 
+#if defined(__LP64__)
+#define __ARCH_SI_PREAMBLE_SIZE   (4 * sizeof(int))
+#endif
+
 #include <asm-generic/siginfo.h>
 
 #undef NSIGTRAP
diff -druNp --no-dereference linux-libre-3.18.26-gnu/arch/powerpc/kernel/eeh_pe.c linux-libre-3.18.27-gnu/arch/powerpc/kernel/eeh_pe.c
--- linux-libre-3.18.26-gnu/arch/powerpc/kernel/eeh_pe.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/arch/powerpc/kernel/eeh_pe.c	2016-02-15 15:47:06.000000000 -0500
@@ -840,32 +840,29 @@ void eeh_pe_restore_bars(struct eeh_pe *
 const char *eeh_pe_loc_get(struct eeh_pe *pe)
 {
 	struct pci_bus *bus = eeh_pe_bus_get(pe);
-	struct device_node *dn = pci_bus_to_OF_node(bus);
+	struct device_node *dn;
 	const char *loc = NULL;
 
-	if (!dn)
-		goto out;
+	while (bus) {
+		dn = pci_bus_to_OF_node(bus);
+		if (!dn) {
+			bus = bus->parent;
+			continue;
+		}
 
-	/* PHB PE or root PE ? */
-	if (pci_is_root_bus(bus)) {
-		loc = of_get_property(dn, "ibm,loc-code", NULL);
-		if (!loc)
+		if (pci_is_root_bus(bus))
 			loc = of_get_property(dn, "ibm,io-base-loc-code", NULL);
+		else
+			loc = of_get_property(dn, "ibm,slot-location-code",
+					      NULL);
+
 		if (loc)
-			goto out;
+			return loc;
 
-		/* Check the root port */
-		dn = dn->child;
-		if (!dn)
-			goto out;
+		bus = bus->parent;
 	}
 
-	loc = of_get_property(dn, "ibm,loc-code", NULL);
-	if (!loc)
-		loc = of_get_property(dn, "ibm,slot-location-code", NULL);
-
-out:
-	return loc ? loc : "N/A";
+	return "N/A";
 }
 
 /**
diff -druNp --no-dereference linux-libre-3.18.26-gnu/arch/powerpc/kvm/book3s_hv_rmhandlers.S linux-libre-3.18.27-gnu/arch/powerpc/kvm/book3s_hv_rmhandlers.S
--- linux-libre-3.18.26-gnu/arch/powerpc/kvm/book3s_hv_rmhandlers.S	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/arch/powerpc/kvm/book3s_hv_rmhandlers.S	2016-02-15 15:47:06.000000000 -0500
@@ -2085,7 +2085,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
 
 	/* Emulate H_SET_DABR/X on P8 for the sake of compat mode guests */
 2:	rlwimi	r5, r4, 5, DAWRX_DR | DAWRX_DW
-	rlwimi	r5, r4, 1, DAWRX_WT
+	rlwimi	r5, r4, 2, DAWRX_WT
 	clrrdi	r4, r4, 3
 	std	r4, VCPU_DAWR(r3)
 	std	r5, VCPU_DAWRX(r3)
diff -druNp --no-dereference linux-libre-3.18.26-gnu/arch/powerpc/kvm/powerpc.c linux-libre-3.18.27-gnu/arch/powerpc/kvm/powerpc.c
--- linux-libre-3.18.26-gnu/arch/powerpc/kvm/powerpc.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/arch/powerpc/kvm/powerpc.c	2016-02-15 15:47:06.000000000 -0500
@@ -921,21 +921,17 @@ int kvm_vcpu_ioctl_get_one_reg(struct kv
 				r = -ENXIO;
 				break;
 			}
-			vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0] = val.vval;
+			val.vval = vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0];
 			break;
 		case KVM_REG_PPC_VSCR:
 			if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
 				r = -ENXIO;
 				break;
 			}
-			vcpu->arch.vr.vscr.u[3] = set_reg_val(reg->id, val);
+			val = get_reg_val(reg->id, vcpu->arch.vr.vscr.u[3]);
 			break;
 		case KVM_REG_PPC_VRSAVE:
-			if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
-				r = -ENXIO;
-				break;
-			}
-			vcpu->arch.vrsave = set_reg_val(reg->id, val);
+			val = get_reg_val(reg->id, vcpu->arch.vrsave);
 			break;
 #endif /* CONFIG_ALTIVEC */
 		default:
@@ -976,17 +972,21 @@ int kvm_vcpu_ioctl_set_one_reg(struct kv
 				r = -ENXIO;
 				break;
 			}
-			val.vval = vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0];
+			vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0] = val.vval;
 			break;
 		case KVM_REG_PPC_VSCR:
 			if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
 				r = -ENXIO;
 				break;
 			}
-			val = get_reg_val(reg->id, vcpu->arch.vr.vscr.u[3]);
+			vcpu->arch.vr.vscr.u[3] = set_reg_val(reg->id, val);
 			break;
 		case KVM_REG_PPC_VRSAVE:
-			val = get_reg_val(reg->id, vcpu->arch.vrsave);
+			if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
+				r = -ENXIO;
+				break;
+			}
+			vcpu->arch.vrsave = set_reg_val(reg->id, val);
 			break;
 #endif /* CONFIG_ALTIVEC */
 		default:
diff -druNp --no-dereference linux-libre-3.18.26-gnu/arch/powerpc/net/bpf_jit_comp.c linux-libre-3.18.27-gnu/arch/powerpc/net/bpf_jit_comp.c
--- linux-libre-3.18.26-gnu/arch/powerpc/net/bpf_jit_comp.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/arch/powerpc/net/bpf_jit_comp.c	2016-02-15 15:47:06.000000000 -0500
@@ -78,18 +78,9 @@ static void bpf_jit_build_prologue(struc
 		PPC_LI(r_X, 0);
 	}
 
-	switch (filter[0].code) {
-	case BPF_RET | BPF_K:
-	case BPF_LD | BPF_W | BPF_LEN:
-	case BPF_LD | BPF_W | BPF_ABS:
-	case BPF_LD | BPF_H | BPF_ABS:
-	case BPF_LD | BPF_B | BPF_ABS:
-		/* first instruction sets A register (or is RET 'constant') */
-		break;
-	default:
-		/* make sure we dont leak kernel information to user */
+	/* make sure we dont leak kernel information to user */
+	if (bpf_needs_clear_a(&filter[0]))
 		PPC_LI(r_A, 0);
-	}
 }
 
 static void bpf_jit_build_epilogue(u32 *image, struct codegen_context *ctx)
diff -druNp --no-dereference linux-libre-3.18.26-gnu/arch/s390/mm/extable.c linux-libre-3.18.27-gnu/arch/s390/mm/extable.c
--- linux-libre-3.18.26-gnu/arch/s390/mm/extable.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/arch/s390/mm/extable.c	2016-02-15 15:47:06.000000000 -0500
@@ -52,12 +52,16 @@ void sort_extable(struct exception_table
 	int i;
 
 	/* Normalize entries to being relative to the start of the section */
-	for (p = start, i = 0; p < finish; p++, i += 8)
+	for (p = start, i = 0; p < finish; p++, i += 8) {
 		p->insn += i;
+		p->fixup += i + 4;
+	}
 	sort(start, finish - start, sizeof(*start), cmp_ex, NULL);
 	/* Denormalize all entries */
-	for (p = start, i = 0; p < finish; p++, i += 8)
+	for (p = start, i = 0; p < finish; p++, i += 8) {
 		p->insn -= i;
+		p->fixup -= i + 4;
+	}
 }
 
 #ifdef CONFIG_MODULES
diff -druNp --no-dereference linux-libre-3.18.26-gnu/arch/sparc/kernel/sys_sparc_64.c linux-libre-3.18.27-gnu/arch/sparc/kernel/sys_sparc_64.c
--- linux-libre-3.18.26-gnu/arch/sparc/kernel/sys_sparc_64.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/arch/sparc/kernel/sys_sparc_64.c	2016-02-15 15:47:06.000000000 -0500
@@ -413,7 +413,7 @@ out:
 
 SYSCALL_DEFINE1(sparc64_personality, unsigned long, personality)
 {
-	int ret;
+	long ret;
 
 	if (personality(current->personality) == PER_LINUX32 &&
 	    personality(personality) == PER_LINUX)
diff -druNp --no-dereference linux-libre-3.18.26-gnu/arch/sparc/net/bpf_jit_comp.c linux-libre-3.18.27-gnu/arch/sparc/net/bpf_jit_comp.c
--- linux-libre-3.18.26-gnu/arch/sparc/net/bpf_jit_comp.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/arch/sparc/net/bpf_jit_comp.c	2016-02-15 15:47:06.000000000 -0500
@@ -420,22 +420,9 @@ void bpf_jit_compile(struct bpf_prog *fp
 		}
 		emit_reg_move(O7, r_saved_O7);
 
-		switch (filter[0].code) {
-		case BPF_RET | BPF_K:
-		case BPF_LD | BPF_W | BPF_LEN:
-		case BPF_LD | BPF_W | BPF_ABS:
-		case BPF_LD | BPF_H | BPF_ABS:
-		case BPF_LD | BPF_B | BPF_ABS:
-			/* The first instruction sets the A register (or is
-			 * a "RET 'constant'")
-			 */
-			break;
-		default:
-			/* Make sure we dont leak kernel information to the
-			 * user.
-			 */
+		/* Make sure we dont leak kernel information to the user. */
+		if (bpf_needs_clear_a(&filter[0]))
 			emit_clear(r_A); /* A = 0 */
-		}
 
 		for (i = 0; i < flen; i++) {
 			unsigned int K = filter[i].k;
diff -druNp --no-dereference linux-libre-3.18.26-gnu/arch/um/os-Linux/start_up.c linux-libre-3.18.27-gnu/arch/um/os-Linux/start_up.c
--- linux-libre-3.18.26-gnu/arch/um/os-Linux/start_up.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/arch/um/os-Linux/start_up.c	2016-02-15 15:47:06.000000000 -0500
@@ -95,6 +95,8 @@ static int start_ptraced_child(void)
 {
 	int pid, n, status;
 
+	fflush(stdout);
+
 	pid = fork();
 	if (pid == 0)
 		ptrace_child();
diff -druNp --no-dereference linux-libre-3.18.26-gnu/arch/x86/mm/pageattr.c linux-libre-3.18.27-gnu/arch/x86/mm/pageattr.c
--- linux-libre-3.18.26-gnu/arch/x86/mm/pageattr.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/arch/x86/mm/pageattr.c	2016-02-15 15:47:06.000000000 -0500
@@ -33,7 +33,7 @@ struct cpa_data {
 	pgd_t		*pgd;
 	pgprot_t	mask_set;
 	pgprot_t	mask_clr;
-	int		numpages;
+	unsigned long	numpages;
 	int		flags;
 	unsigned long	pfn;
 	unsigned	force_split : 1;
@@ -1293,7 +1293,7 @@ static int __change_page_attr_set_clr(st
 		 * CPA operation. Either a large page has been
 		 * preserved or a single page update happened.
 		 */
-		BUG_ON(cpa->numpages > numpages);
+		BUG_ON(cpa->numpages > numpages || !cpa->numpages);
 		numpages -= cpa->numpages;
 		if (cpa->flags & (CPA_PAGES_ARRAY | CPA_ARRAY))
 			cpa->curpage++;
diff -druNp --no-dereference linux-libre-3.18.26-gnu/crypto/af_alg.c linux-libre-3.18.27-gnu/crypto/af_alg.c
--- linux-libre-3.18.26-gnu/crypto/af_alg.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/crypto/af_alg.c	2016-02-15 15:47:06.000000000 -0500
@@ -76,6 +76,8 @@ int af_alg_register_type(const struct af
 		goto unlock;
 
 	type->ops->owner = THIS_MODULE;
+	if (type->ops_nokey)
+		type->ops_nokey->owner = THIS_MODULE;
 	node->type = type;
 	list_add(&node->list, &alg_types);
 	err = 0;
@@ -125,6 +127,26 @@ int af_alg_release(struct socket *sock)
 }
 EXPORT_SYMBOL_GPL(af_alg_release);
 
+void af_alg_release_parent(struct sock *sk)
+{
+	struct alg_sock *ask = alg_sk(sk);
+	unsigned int nokey = ask->nokey_refcnt;
+	bool last = nokey && !ask->refcnt;
+
+	sk = ask->parent;
+	ask = alg_sk(sk);
+
+	lock_sock(sk);
+	ask->nokey_refcnt -= nokey;
+	if (!last)
+		last = !--ask->refcnt;
+	release_sock(sk);
+
+	if (last)
+		sock_put(sk);
+}
+EXPORT_SYMBOL_GPL(af_alg_release_parent);
+
 static int alg_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
 {
 	struct sock *sk = sock->sk;
@@ -132,6 +154,7 @@ static int alg_bind(struct socket *sock,
 	struct sockaddr_alg *sa = (void *)uaddr;
 	const struct af_alg_type *type;
 	void *private;
+	int err;
 
 	if (sock->state == SS_CONNECTED)
 		return -EINVAL;
@@ -157,16 +180,22 @@ static int alg_bind(struct socket *sock,
 		return PTR_ERR(private);
 	}
 
+	err = -EBUSY;
 	lock_sock(sk);
+	if (ask->refcnt | ask->nokey_refcnt)
+		goto unlock;
 
 	swap(ask->type, type);
 	swap(ask->private, private);
 
+	err = 0;
+
+unlock:
 	release_sock(sk);
 
 	alg_do_release(type, private);
 
-	return 0;
+	return err;
 }
 
 static int alg_setkey(struct sock *sk, char __user *ukey,
@@ -199,11 +228,15 @@ static int alg_setsockopt(struct socket
 	struct sock *sk = sock->sk;
 	struct alg_sock *ask = alg_sk(sk);
 	const struct af_alg_type *type;
-	int err = -ENOPROTOOPT;
+	int err = -EBUSY;
 
 	lock_sock(sk);
+	if (ask->refcnt)
+		goto unlock;
+
 	type = ask->type;
 
+	err = -ENOPROTOOPT;
 	if (level != SOL_ALG || !type)
 		goto unlock;
 
@@ -228,6 +261,7 @@ int af_alg_accept(struct sock *sk, struc
 	struct alg_sock *ask = alg_sk(sk);
 	const struct af_alg_type *type;
 	struct sock *sk2;
+	unsigned int nokey;
 	int err;
 
 	lock_sock(sk);
@@ -247,20 +281,29 @@ int af_alg_accept(struct sock *sk, struc
 	security_sk_clone(sk, sk2);
 
 	err = type->accept(ask->private, sk2);
-	if (err) {
-		sk_free(sk2);
+
+	nokey = err == -ENOKEY;
+	if (nokey && type->accept_nokey)
+		err = type->accept_nokey(ask->private, sk2);
+
+	if (err)
 		goto unlock;
-	}
 
 	sk2->sk_family = PF_ALG;
 
-	sock_hold(sk);
+	if (nokey || !ask->refcnt++)
+		sock_hold(sk);
+	ask->nokey_refcnt += nokey;
 	alg_sk(sk2)->parent = sk;
 	alg_sk(sk2)->type = type;
+	alg_sk(sk2)->nokey_refcnt = nokey;
 
 	newsock->ops = type->ops;
 	newsock->state = SS_CONNECTED;
 
+	if (nokey)
+		newsock->ops = type->ops_nokey;
+
 	err = 0;
 
 unlock:
diff -druNp --no-dereference linux-libre-3.18.26-gnu/crypto/ahash.c linux-libre-3.18.27-gnu/crypto/ahash.c
--- linux-libre-3.18.26-gnu/crypto/ahash.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/crypto/ahash.c	2016-02-15 15:47:06.000000000 -0500
@@ -450,6 +450,7 @@ static int crypto_ahash_init_tfm(struct
 	struct ahash_alg *alg = crypto_ahash_alg(hash);
 
 	hash->setkey = ahash_nosetkey;
+	hash->has_setkey = false;
 	hash->export = ahash_no_export;
 	hash->import = ahash_no_import;
 
@@ -462,8 +463,10 @@ static int crypto_ahash_init_tfm(struct
 	hash->finup = alg->finup ?: ahash_def_finup;
 	hash->digest = alg->digest;
 
-	if (alg->setkey)
+	if (alg->setkey) {
 		hash->setkey = alg->setkey;
+		hash->has_setkey = true;
+	}
 	if (alg->export)
 		hash->export = alg->export;
 	if (alg->import)
diff -druNp --no-dereference linux-libre-3.18.26-gnu/crypto/algif_hash.c linux-libre-3.18.27-gnu/crypto/algif_hash.c
--- linux-libre-3.18.26-gnu/crypto/algif_hash.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/crypto/algif_hash.c	2016-02-15 15:47:06.000000000 -0500
@@ -34,6 +34,11 @@ struct hash_ctx {
 	struct ahash_request req;
 };
 
+struct algif_hash_tfm {
+	struct crypto_ahash *hash;
+	bool has_key;
+};
+
 static int hash_sendmsg(struct kiocb *unused, struct socket *sock,
 			struct msghdr *msg, size_t ignored)
 {
@@ -51,7 +56,8 @@ static int hash_sendmsg(struct kiocb *un
 
 	lock_sock(sk);
 	if (!ctx->more) {
-		err = crypto_ahash_init(&ctx->req);
+		err = af_alg_wait_for_completion(crypto_ahash_init(&ctx->req),
+						&ctx->completion);
 		if (err)
 			goto unlock;
 	}
@@ -131,6 +137,7 @@ static ssize_t hash_sendpage(struct sock
 	} else {
 		if (!ctx->more) {
 			err = crypto_ahash_init(&ctx->req);
+			err = af_alg_wait_for_completion(err, &ctx->completion);
 			if (err)
 				goto unlock;
 		}
@@ -238,19 +245,151 @@ static struct proto_ops algif_hash_ops =
 	.accept		=	hash_accept,
 };
 
+static int hash_check_key(struct socket *sock)
+{
+	int err = 0;
+	struct sock *psk;
+	struct alg_sock *pask;
+	struct algif_hash_tfm *tfm;
+	struct sock *sk = sock->sk;
+	struct alg_sock *ask = alg_sk(sk);
+
+	lock_sock(sk);
+	if (ask->refcnt)
+		goto unlock_child;
+
+	psk = ask->parent;
+	pask = alg_sk(ask->parent);
+	tfm = pask->private;
+
+	err = -ENOKEY;
+	lock_sock_nested(psk, SINGLE_DEPTH_NESTING);
+	if (!tfm->has_key)
+		goto unlock;
+
+	if (!pask->refcnt++)
+		sock_hold(psk);
+
+	ask->refcnt = 1;
+	sock_put(psk);
+
+	err = 0;
+
+unlock:
+	release_sock(psk);
+unlock_child:
+	release_sock(sk);
+
+	return err;
+}
+
+static int hash_sendmsg_nokey(struct socket *sock, struct msghdr *msg,
+			      size_t size)
+{
+	int err;
+
+	err = hash_check_key(sock);
+	if (err)
+		return err;
+
+	return hash_sendmsg(NULL, sock, msg, size);
+}
+
+static ssize_t hash_sendpage_nokey(struct socket *sock, struct page *page,
+				   int offset, size_t size, int flags)
+{
+	int err;
+
+	err = hash_check_key(sock);
+	if (err)
+		return err;
+
+	return hash_sendpage(sock, page, offset, size, flags);
+}
+
+static int hash_recvmsg_nokey(struct socket *sock, struct msghdr *msg,
+			      size_t ignored, int flags)
+{
+	int err;
+
+	err = hash_check_key(sock);
+	if (err)
+		return err;
+
+	return hash_recvmsg(NULL, sock, msg, ignored, flags);
+}
+
+static int hash_accept_nokey(struct socket *sock, struct socket *newsock,
+			     int flags)
+{
+	int err;
+
+	err = hash_check_key(sock);
+	if (err)
+		return err;
+
+	return hash_accept(sock, newsock, flags);
+}
+
+static struct proto_ops algif_hash_ops_nokey = {
+	.family		=	PF_ALG,
+
+	.connect	=	sock_no_connect,
+	.socketpair	=	sock_no_socketpair,
+	.getname	=	sock_no_getname,
+	.ioctl		=	sock_no_ioctl,
+	.listen		=	sock_no_listen,
+	.shutdown	=	sock_no_shutdown,
+	.getsockopt	=	sock_no_getsockopt,
+	.mmap		=	sock_no_mmap,
+	.bind		=	sock_no_bind,
+	.setsockopt	=	sock_no_setsockopt,
+	.poll		=	sock_no_poll,
+
+	.release	=	af_alg_release,
+	.sendmsg	=	hash_sendmsg_nokey,
+	.sendpage	=	hash_sendpage_nokey,
+	.recvmsg	=	hash_recvmsg_nokey,
+	.accept		=	hash_accept_nokey,
+};
+
 static void *hash_bind(const char *name, u32 type, u32 mask)
 {
-	return crypto_alloc_ahash(name, type, mask);
+	struct algif_hash_tfm *tfm;
+	struct crypto_ahash *hash;
+
+	tfm = kzalloc(sizeof(*tfm), GFP_KERNEL);
+	if (!tfm)
+		return ERR_PTR(-ENOMEM);
+
+	hash = crypto_alloc_ahash(name, type, mask);
+	if (IS_ERR(hash)) {
+		kfree(tfm);
+		return ERR_CAST(hash);
+	}
+
+	tfm->hash = hash;
+
+	return tfm;
 }
 
 static void hash_release(void *private)
 {
-	crypto_free_ahash(private);
+	struct algif_hash_tfm *tfm = private;
+
+	crypto_free_ahash(tfm->hash);
+	kfree(tfm);
 }
 
 static int hash_setkey(void *private, const u8 *key, unsigned int keylen)
 {
-	return crypto_ahash_setkey(private, key, keylen);
+	struct algif_hash_tfm *tfm = private;
+	int err;
+
+	err = crypto_ahash_setkey(tfm->hash, key, keylen);
+	tfm->has_key = !err;
+
+	return err;
 }
 
 static void hash_sock_destruct(struct sock *sk)
@@ -264,12 +403,14 @@ static void hash_sock_destruct(struct so
 	af_alg_release_parent(sk);
 }
 
-static int hash_accept_parent(void *private, struct sock *sk)
+static int hash_accept_parent_nokey(void *private, struct sock *sk)
 {
 	struct hash_ctx *ctx;
 	struct alg_sock *ask = alg_sk(sk);
-	unsigned len = sizeof(*ctx) + crypto_ahash_reqsize(private);
-	unsigned ds = crypto_ahash_digestsize(private);
+	struct algif_hash_tfm *tfm = private;
+	struct crypto_ahash *hash = tfm->hash;
+	unsigned len = sizeof(*ctx) + crypto_ahash_reqsize(hash);
+	unsigned ds = crypto_ahash_digestsize(hash);
 
 	ctx = sock_kmalloc(sk, len, GFP_KERNEL);
 	if (!ctx)
@@ -289,7 +430,7 @@ static int hash_accept_parent(void *priv
 
 	ask->private = ctx;
 
-	ahash_request_set_tfm(&ctx->req, private);
+	ahash_request_set_tfm(&ctx->req, hash);
 	ahash_request_set_callback(&ctx->req, CRYPTO_TFM_REQ_MAY_BACKLOG,
 				   af_alg_complete, &ctx->completion);
 
@@ -298,12 +439,24 @@ static int hash_accept_parent(void *priv
 	return 0;
 }
 
+static int hash_accept_parent(void *private, struct sock *sk)
+{
+	struct algif_hash_tfm *tfm = private;
+
+	if (!tfm->has_key && crypto_ahash_has_setkey(tfm->hash))
+		return -ENOKEY;
+
+	return hash_accept_parent_nokey(private, sk);
+}
+
 static const struct af_alg_type algif_type_hash = {
 	.bind		=	hash_bind,
 	.release	=	hash_release,
 	.setkey		=	hash_setkey,
 	.accept		=	hash_accept_parent,
+	.accept_nokey	=	hash_accept_parent_nokey,
 	.ops		=	&algif_hash_ops,
+	.ops_nokey	=	&algif_hash_ops_nokey,
 	.name		=	"hash",
 	.owner		=	THIS_MODULE
 };
diff -druNp --no-dereference linux-libre-3.18.26-gnu/crypto/asymmetric_keys/x509_public_key.c linux-libre-3.18.27-gnu/crypto/asymmetric_keys/x509_public_key.c
--- linux-libre-3.18.26-gnu/crypto/asymmetric_keys/x509_public_key.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/crypto/asymmetric_keys/x509_public_key.c	2016-02-15 15:47:06.000000000 -0500
@@ -307,10 +307,6 @@ static int x509_key_preparse(struct key_
 		srlen = cert->raw_serial_size;
 		q = cert->raw_serial;
 	}
-	if (srlen > 1 && *q == 0) {
-		srlen--;
-		q++;
-	}
 
 	ret = -ENOMEM;
 	desc = kmalloc(sulen + 2 + srlen * 2 + 1, GFP_KERNEL);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/crypto/crc32c_generic.c linux-libre-3.18.27-gnu/crypto/crc32c_generic.c
--- linux-libre-3.18.26-gnu/crypto/crc32c_generic.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/crypto/crc32c_generic.c	2016-02-15 15:47:06.000000000 -0500
@@ -172,4 +172,3 @@ MODULE_DESCRIPTION("CRC32c (Castagnoli)
 MODULE_LICENSE("GPL");
 MODULE_ALIAS_CRYPTO("crc32c");
 MODULE_ALIAS_CRYPTO("crc32c-generic");
-MODULE_SOFTDEP("pre: crc32c");
diff -druNp --no-dereference linux-libre-3.18.26-gnu/crypto/shash.c linux-libre-3.18.27-gnu/crypto/shash.c
--- linux-libre-3.18.26-gnu/crypto/shash.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/crypto/shash.c	2016-02-15 15:47:06.000000000 -0500
@@ -354,9 +354,10 @@ int crypto_init_shash_ops_async(struct c
 	crt->final = shash_async_final;
 	crt->finup = shash_async_finup;
 	crt->digest = shash_async_digest;
+	crt->setkey = shash_async_setkey;
+
+	crt->has_setkey = alg->setkey != shash_no_setkey;
 
-	if (alg->setkey)
-		crt->setkey = shash_async_setkey;
 	if (alg->export)
 		crt->export = shash_async_export;
 	if (alg->import)
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/block/zram/zcomp.c linux-libre-3.18.27-gnu/drivers/block/zram/zcomp.c
--- linux-libre-3.18.26-gnu/drivers/block/zram/zcomp.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/block/zram/zcomp.c	2016-02-15 15:47:06.000000000 -0500
@@ -76,7 +76,7 @@ static void zcomp_strm_free(struct zcomp
  */
 static struct zcomp_strm *zcomp_strm_alloc(struct zcomp *comp)
 {
-	struct zcomp_strm *zstrm = kmalloc(sizeof(*zstrm), GFP_KERNEL);
+	struct zcomp_strm *zstrm = kmalloc(sizeof(*zstrm), GFP_NOIO);
 	if (!zstrm)
 		return NULL;
 
@@ -85,7 +85,7 @@ static struct zcomp_strm *zcomp_strm_all
 	 * allocate 2 pages. 1 for compressed data, plus 1 extra for the
 	 * case when compressed size is larger than the original one
 	 */
-	zstrm->buffer = (void *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 1);
+	zstrm->buffer = (void *)__get_free_pages(GFP_NOIO | __GFP_ZERO, 1);
 	if (!zstrm->private || !zstrm->buffer) {
 		zcomp_strm_free(comp, zstrm);
 		zstrm = NULL;
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/block/zram/zcomp_lz4.c linux-libre-3.18.27-gnu/drivers/block/zram/zcomp_lz4.c
--- linux-libre-3.18.26-gnu/drivers/block/zram/zcomp_lz4.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/block/zram/zcomp_lz4.c	2016-02-15 15:47:06.000000000 -0500
@@ -10,17 +10,36 @@
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/lz4.h>
+#include <linux/vmalloc.h>
+#include <linux/mm.h>
 
 #include "zcomp_lz4.h"
 
 static void *zcomp_lz4_create(void)
 {
-	return kzalloc(LZ4_MEM_COMPRESS, GFP_KERNEL);
+	void *ret;
+
+	/*
+	 * This function can be called in swapout/fs write path
+	 * so we can't use GFP_FS|IO. And it assumes we already
+	 * have at least one stream in zram initialization so we
+	 * don't do best effort to allocate more stream in here.
+	 * A default stream will work well without further multiple
+	 * streams. That's why we use NORETRY | NOWARN.
+	 */
+	ret = kzalloc(LZ4_MEM_COMPRESS, GFP_NOIO | __GFP_NORETRY |
+					__GFP_NOWARN);
+	if (!ret)
+		ret = __vmalloc(LZ4_MEM_COMPRESS,
+				GFP_NOIO | __GFP_NORETRY | __GFP_NOWARN |
+				__GFP_ZERO | __GFP_HIGHMEM,
+				PAGE_KERNEL);
+	return ret;
 }
 
 static void zcomp_lz4_destroy(void *private)
 {
-	kfree(private);
+	kvfree(private);
 }
 
 static int zcomp_lz4_compress(const unsigned char *src, unsigned char *dst,
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/block/zram/zcomp_lzo.c linux-libre-3.18.27-gnu/drivers/block/zram/zcomp_lzo.c
--- linux-libre-3.18.26-gnu/drivers/block/zram/zcomp_lzo.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/block/zram/zcomp_lzo.c	2016-02-15 15:47:06.000000000 -0500
@@ -10,17 +10,36 @@
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/lzo.h>
+#include <linux/vmalloc.h>
+#include <linux/mm.h>
 
 #include "zcomp_lzo.h"
 
 static void *lzo_create(void)
 {
-	return kzalloc(LZO1X_MEM_COMPRESS, GFP_KERNEL);
+	void *ret;
+
+	/*
+	 * This function can be called in swapout/fs write path
+	 * so we can't use GFP_FS|IO. And it assumes we already
+	 * have at least one stream in zram initialization so we
+	 * don't do best effort to allocate more stream in here.
+	 * A default stream will work well without further multiple
+	 * streams. That's why we use NORETRY | NOWARN.
+	 */
+	ret = kzalloc(LZO1X_MEM_COMPRESS, GFP_NOIO | __GFP_NORETRY |
+					__GFP_NOWARN);
+	if (!ret)
+		ret = __vmalloc(LZO1X_MEM_COMPRESS,
+				GFP_NOIO | __GFP_NORETRY | __GFP_NOWARN |
+				__GFP_ZERO | __GFP_HIGHMEM,
+				PAGE_KERNEL);
+	return ret;
 }
 
 static void lzo_destroy(void *private)
 {
-	kfree(private);
+	kvfree(private);
 }
 
 static int lzo_compress(const unsigned char *src, unsigned char *dst,
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/bluetooth/btusb.c linux-libre-3.18.27-gnu/drivers/bluetooth/btusb.c
--- linux-libre-3.18.26-gnu/drivers/bluetooth/btusb.c	2016-02-16 20:07:28.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/bluetooth/btusb.c	2016-02-16 21:27:00.000000000 -0500
@@ -134,6 +134,10 @@ static const struct usb_device_id btusb_
 	/* IMC Networks - Broadcom based */
 	{ USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
 
+	/* Toshiba Corp - Broadcom based */
+	{ USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
+	  .driver_info = BTUSB_BCM_PATCHRAM },
+
 	/* Intel Bluetooth USB Bootloader (RAM module) */
 	{ USB_DEVICE(0x8087, 0x0a5a),
 	  .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/connector/connector.c linux-libre-3.18.27-gnu/drivers/connector/connector.c
--- linux-libre-3.18.26-gnu/drivers/connector/connector.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/connector/connector.c	2016-02-15 15:47:06.000000000 -0500
@@ -172,26 +172,21 @@ static int cn_call_callback(struct sk_bu
  *
  * It checks skb, netlink header and msg sizes, and calls callback helper.
  */
-static void cn_rx_skb(struct sk_buff *__skb)
+static void cn_rx_skb(struct sk_buff *skb)
 {
 	struct nlmsghdr *nlh;
-	struct sk_buff *skb;
 	int len, err;
 
-	skb = skb_get(__skb);
-
 	if (skb->len >= NLMSG_HDRLEN) {
 		nlh = nlmsg_hdr(skb);
 		len = nlmsg_len(nlh);
 
 		if (len < (int)sizeof(struct cn_msg) ||
 		    skb->len < nlh->nlmsg_len ||
-		    len > CONNECTOR_MAX_MSG_SIZE) {
-			kfree_skb(skb);
+		    len > CONNECTOR_MAX_MSG_SIZE)
 			return;
-		}
 
-		err = cn_call_callback(skb);
+		err = cn_call_callback(skb_get(skb));
 		if (err < 0)
 			kfree_skb(skb);
 	}
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/dma/dw/core.c linux-libre-3.18.27-gnu/drivers/dma/dw/core.c
--- linux-libre-3.18.26-gnu/drivers/dma/dw/core.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/dma/dw/core.c	2016-02-15 15:47:06.000000000 -0500
@@ -148,6 +148,7 @@ static void dwc_initialize(struct dw_dma
 
 	/* Enable interrupts */
 	channel_set_bit(dw, MASK.XFER, dwc->mask);
+	channel_set_bit(dw, MASK.BLOCK, dwc->mask);
 	channel_set_bit(dw, MASK.ERROR, dwc->mask);
 
 	dwc->initialized = true;
@@ -222,7 +223,8 @@ static void dwc_dostart(struct dw_dma_ch
 	/* ASSERT:  channel is idle */
 	if (dma_readl(dw, CH_EN) & dwc->mask) {
 		dev_err(chan2dev(&dwc->chan),
-			"BUG: Attempted to start non-idle channel\n");
+			"%s: BUG: Attempted to start non-idle channel\n",
+			__func__);
 		dwc_dump_chan_regs(dwc);
 
 		/* The tasklet will hopefully advance the queue... */
@@ -527,16 +529,17 @@ EXPORT_SYMBOL(dw_dma_get_dst_addr);
 
 /* Called with dwc->lock held and all DMAC interrupts disabled */
 static void dwc_handle_cyclic(struct dw_dma *dw, struct dw_dma_chan *dwc,
-		u32 status_err, u32 status_xfer)
+		u32 status_block, u32 status_err, u32 status_xfer)
 {
 	unsigned long flags;
 
-	if (dwc->mask) {
+	if (status_block & dwc->mask) {
 		void (*callback)(void *param);
 		void *callback_param;
 
 		dev_vdbg(chan2dev(&dwc->chan), "new cyclic period llp 0x%08x\n",
 				channel_readl(dwc, LLP));
+		dma_writel(dw, CLEAR.BLOCK, dwc->mask);
 
 		callback = dwc->cdesc->period_callback;
 		callback_param = dwc->cdesc->period_callback_param;
@@ -568,6 +571,7 @@ static void dwc_handle_cyclic(struct dw_
 		channel_writel(dwc, CTL_LO, 0);
 		channel_writel(dwc, CTL_HI, 0);
 
+		dma_writel(dw, CLEAR.BLOCK, dwc->mask);
 		dma_writel(dw, CLEAR.ERROR, dwc->mask);
 		dma_writel(dw, CLEAR.XFER, dwc->mask);
 
@@ -584,10 +588,12 @@ static void dw_dma_tasklet(unsigned long
 {
 	struct dw_dma *dw = (struct dw_dma *)data;
 	struct dw_dma_chan *dwc;
+	u32 status_block;
 	u32 status_xfer;
 	u32 status_err;
 	int i;
 
+	status_block = dma_readl(dw, RAW.BLOCK);
 	status_xfer = dma_readl(dw, RAW.XFER);
 	status_err = dma_readl(dw, RAW.ERROR);
 
@@ -596,7 +602,8 @@ static void dw_dma_tasklet(unsigned long
 	for (i = 0; i < dw->dma.chancnt; i++) {
 		dwc = &dw->chan[i];
 		if (test_bit(DW_DMA_IS_CYCLIC, &dwc->flags))
-			dwc_handle_cyclic(dw, dwc, status_err, status_xfer);
+			dwc_handle_cyclic(dw, dwc, status_block, status_err,
+					status_xfer);
 		else if (status_err & (1 << i))
 			dwc_handle_error(dw, dwc);
 		else if (status_xfer & (1 << i))
@@ -607,6 +614,7 @@ static void dw_dma_tasklet(unsigned long
 	 * Re-enable interrupts.
 	 */
 	channel_set_bit(dw, MASK.XFER, dw->all_chan_mask);
+	channel_set_bit(dw, MASK.BLOCK, dw->all_chan_mask);
 	channel_set_bit(dw, MASK.ERROR, dw->all_chan_mask);
 }
 
@@ -626,6 +634,7 @@ static irqreturn_t dw_dma_interrupt(int
 	 * softirq handler.
 	 */
 	channel_clear_bit(dw, MASK.XFER, dw->all_chan_mask);
+	channel_clear_bit(dw, MASK.BLOCK, dw->all_chan_mask);
 	channel_clear_bit(dw, MASK.ERROR, dw->all_chan_mask);
 
 	status = dma_readl(dw, STATUS_INT);
@@ -636,6 +645,7 @@ static irqreturn_t dw_dma_interrupt(int
 
 		/* Try to recover */
 		channel_clear_bit(dw, MASK.XFER, (1 << 8) - 1);
+		channel_clear_bit(dw, MASK.BLOCK, (1 << 8) - 1);
 		channel_clear_bit(dw, MASK.SRC_TRAN, (1 << 8) - 1);
 		channel_clear_bit(dw, MASK.DST_TRAN, (1 << 8) - 1);
 		channel_clear_bit(dw, MASK.ERROR, (1 << 8) - 1);
@@ -1103,6 +1113,7 @@ static void dw_dma_off(struct dw_dma *dw
 	dma_writel(dw, CFG, 0);
 
 	channel_clear_bit(dw, MASK.XFER, dw->all_chan_mask);
+	channel_clear_bit(dw, MASK.BLOCK, dw->all_chan_mask);
 	channel_clear_bit(dw, MASK.SRC_TRAN, dw->all_chan_mask);
 	channel_clear_bit(dw, MASK.DST_TRAN, dw->all_chan_mask);
 	channel_clear_bit(dw, MASK.ERROR, dw->all_chan_mask);
@@ -1208,6 +1219,7 @@ static void dwc_free_chan_resources(stru
 
 	/* Disable interrupts */
 	channel_clear_bit(dw, MASK.XFER, dwc->mask);
+	channel_clear_bit(dw, MASK.BLOCK, dwc->mask);
 	channel_clear_bit(dw, MASK.ERROR, dwc->mask);
 
 	spin_unlock_irqrestore(&dwc->lock, flags);
@@ -1237,7 +1249,6 @@ static void dwc_free_chan_resources(stru
 int dw_dma_cyclic_start(struct dma_chan *chan)
 {
 	struct dw_dma_chan	*dwc = to_dw_dma_chan(chan);
-	struct dw_dma		*dw = to_dw_dma(dwc->chan.device);
 	unsigned long		flags;
 
 	if (!test_bit(DW_DMA_IS_CYCLIC, &dwc->flags)) {
@@ -1246,26 +1257,7 @@ int dw_dma_cyclic_start(struct dma_chan
 	}
 
 	spin_lock_irqsave(&dwc->lock, flags);
-
-	/* Assert channel is idle */
-	if (dma_readl(dw, CH_EN) & dwc->mask) {
-		dev_err(chan2dev(&dwc->chan),
-			"BUG: Attempted to start non-idle channel\n");
-		dwc_dump_chan_regs(dwc);
-		spin_unlock_irqrestore(&dwc->lock, flags);
-		return -EBUSY;
-	}
-
-	dma_writel(dw, CLEAR.ERROR, dwc->mask);
-	dma_writel(dw, CLEAR.XFER, dwc->mask);
-
-	/* Setup DMAC channel registers */
-	channel_writel(dwc, LLP, dwc->cdesc->desc[0]->txd.phys);
-	channel_writel(dwc, CTL_LO, DWC_CTLL_LLP_D_EN | DWC_CTLL_LLP_S_EN);
-	channel_writel(dwc, CTL_HI, 0);
-
-	channel_set_bit(dw, CH_EN, dwc->mask);
-
+	dwc_dostart(dwc, dwc->cdesc->desc[0]);
 	spin_unlock_irqrestore(&dwc->lock, flags);
 
 	return 0;
@@ -1470,6 +1462,7 @@ void dw_dma_cyclic_free(struct dma_chan
 
 	dwc_chan_disable(dw, dwc);
 
+	dma_writel(dw, CLEAR.BLOCK, dwc->mask);
 	dma_writel(dw, CLEAR.ERROR, dwc->mask);
 	dma_writel(dw, CLEAR.XFER, dwc->mask);
 
@@ -1557,9 +1550,6 @@ int dw_dma_probe(struct dw_dma_chip *chi
 	/* Force dma off, just in case */
 	dw_dma_off(dw);
 
-	/* Disable BLOCK interrupts as well */
-	channel_clear_bit(dw, MASK.BLOCK, dw->all_chan_mask);
-
 	/* Create a pool of consistent memory blocks for hardware descriptors */
 	dw->desc_pool = dmam_pool_create("dw_dmac_desc_pool", chip->dev,
 					 sizeof(struct dw_desc), 4, 0);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/edac/edac_device.c linux-libre-3.18.27-gnu/drivers/edac/edac_device.c
--- linux-libre-3.18.26-gnu/drivers/edac/edac_device.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/edac/edac_device.c	2016-02-15 15:47:06.000000000 -0500
@@ -435,16 +435,13 @@ void edac_device_workq_setup(struct edac
  */
 void edac_device_workq_teardown(struct edac_device_ctl_info *edac_dev)
 {
-	int status;
-
 	if (!edac_dev->edac_check)
 		return;
 
-	status = cancel_delayed_work(&edac_dev->work);
-	if (status == 0) {
-		/* workq instance might be running, wait for it */
-		flush_workqueue(edac_workqueue);
-	}
+	edac_dev->op_state = OP_OFFLINE;
+
+	cancel_delayed_work_sync(&edac_dev->work);
+	flush_workqueue(edac_workqueue);
 }
 
 /*
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/edac/edac_mc.c linux-libre-3.18.27-gnu/drivers/edac/edac_mc.c
--- linux-libre-3.18.26-gnu/drivers/edac/edac_mc.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/edac/edac_mc.c	2016-02-15 15:47:06.000000000 -0500
@@ -581,18 +581,10 @@ static void edac_mc_workq_setup(struct m
  */
 static void edac_mc_workq_teardown(struct mem_ctl_info *mci)
 {
-	int status;
-
-	if (mci->op_state != OP_RUNNING_POLL)
-		return;
-
-	status = cancel_delayed_work(&mci->work);
-	if (status == 0) {
-		edac_dbg(0, "not canceled, flush the queue\n");
+	mci->op_state = OP_OFFLINE;
 
-		/* workq instance might be running, wait for it */
-		flush_workqueue(edac_workqueue);
-	}
+	cancel_delayed_work_sync(&mci->work);
+	flush_workqueue(edac_workqueue);
 }
 
 /*
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/edac/edac_pci.c linux-libre-3.18.27-gnu/drivers/edac/edac_pci.c
--- linux-libre-3.18.26-gnu/drivers/edac/edac_pci.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/edac/edac_pci.c	2016-02-15 15:47:06.000000000 -0500
@@ -274,13 +274,12 @@ static void edac_pci_workq_setup(struct
  */
 static void edac_pci_workq_teardown(struct edac_pci_ctl_info *pci)
 {
-	int status;
-
 	edac_dbg(0, "\n");
 
-	status = cancel_delayed_work(&pci->work);
-	if (status == 0)
-		flush_workqueue(edac_workqueue);
+	pci->op_state = OP_OFFLINE;
+
+	cancel_delayed_work_sync(&pci->work);
+	flush_workqueue(edac_workqueue);
 }
 
 /*
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/gpu/drm/drm_dp_mst_topology.c linux-libre-3.18.27-gnu/drivers/gpu/drm/drm_dp_mst_topology.c
--- linux-libre-3.18.26-gnu/drivers/gpu/drm/drm_dp_mst_topology.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/gpu/drm/drm_dp_mst_topology.c	2016-02-15 15:47:06.000000000 -0500
@@ -956,17 +956,17 @@ static struct drm_dp_mst_port *drm_dp_ge
 static u8 drm_dp_calculate_rad(struct drm_dp_mst_port *port,
 				 u8 *rad)
 {
-	int lct = port->parent->lct;
+	int parent_lct = port->parent->lct;
 	int shift = 4;
-	int idx = lct / 2;
-	if (lct > 1) {
-		memcpy(rad, port->parent->rad, idx);
-		shift = (lct % 2) ? 4 : 0;
+	int idx = (parent_lct - 1) / 2;
+	if (parent_lct > 1) {
+		memcpy(rad, port->parent->rad, idx + 1);
+		shift = (parent_lct % 2) ? 4 : 0;
 	} else
 		rad[0] = 0;
 
 	rad[idx] |= port->port_num << shift;
-	return lct + 1;
+	return parent_lct + 1;
 }
 
 /*
@@ -1014,19 +1014,20 @@ static void drm_dp_check_port_guid(struc
 
 static void build_mst_prop_path(struct drm_dp_mst_port *port,
 				struct drm_dp_mst_branch *mstb,
-				char *proppath)
+				char *proppath,
+				size_t proppath_size)
 {
 	int i;
 	char temp[8];
-	snprintf(proppath, 255, "mst:%d", mstb->mgr->conn_base_id);
+	snprintf(proppath, proppath_size, "mst:%d", mstb->mgr->conn_base_id);
 	for (i = 0; i < (mstb->lct - 1); i++) {
 		int shift = (i % 2) ? 0 : 4;
-		int port_num = mstb->rad[i / 2] >> shift;
-		snprintf(temp, 8, "-%d", port_num);
-		strncat(proppath, temp, 255);
+		int port_num = (mstb->rad[i / 2] >> shift) & 0xf;
+		snprintf(temp, sizeof(temp), "-%d", port_num);
+		strlcat(proppath, temp, proppath_size);
 	}
-	snprintf(temp, 8, "-%d", port->port_num);
-	strncat(proppath, temp, 255);
+	snprintf(temp, sizeof(temp), "-%d", port->port_num);
+	strlcat(proppath, temp, proppath_size);
 }
 
 static void drm_dp_add_port(struct drm_dp_mst_branch *mstb,
@@ -1097,7 +1098,7 @@ static void drm_dp_add_port(struct drm_d
 
 	if (created && !port->input) {
 		char proppath[255];
-		build_mst_prop_path(port, mstb, proppath);
+		build_mst_prop_path(port, mstb, proppath, sizeof(proppath));
 		port->connector = (*mstb->mgr->cbs->add_connector)(mstb->mgr, port, proppath);
 	}
 
@@ -1158,7 +1159,7 @@ static struct drm_dp_mst_branch *drm_dp_
 
 	for (i = 0; i < lct - 1; i++) {
 		int shift = (i % 2) ? 0 : 4;
-		int port_num = rad[i / 2] >> shift;
+		int port_num = (rad[i / 2] >> shift) & 0xf;
 
 		list_for_each_entry(port, &mstb->ports, next) {
 			if (port->port_num == port_num) {
@@ -1177,6 +1178,50 @@ static struct drm_dp_mst_branch *drm_dp_
 	return mstb;
 }
 
+static struct drm_dp_mst_branch *get_mst_branch_device_by_guid_helper(
+	struct drm_dp_mst_branch *mstb,
+	uint8_t *guid)
+{
+	struct drm_dp_mst_branch *found_mstb;
+	struct drm_dp_mst_port *port;
+
+	list_for_each_entry(port, &mstb->ports, next) {
+		if (!port->mstb)
+			continue;
+
+		if (port->guid_valid && memcmp(port->guid, guid, 16) == 0)
+			return port->mstb;
+
+		found_mstb = get_mst_branch_device_by_guid_helper(port->mstb, guid);
+
+		if (found_mstb)
+			return found_mstb;
+	}
+
+	return NULL;
+}
+
+static struct drm_dp_mst_branch *drm_dp_get_mst_branch_device_by_guid(
+	struct drm_dp_mst_topology_mgr *mgr,
+	uint8_t *guid)
+{
+	struct drm_dp_mst_branch *mstb;
+
+	/* find the port by iterating down */
+	mutex_lock(&mgr->lock);
+
+	if (mgr->guid_valid && memcmp(mgr->guid, guid, 16) == 0)
+		mstb = mgr->mst_primary;
+	else
+		mstb = get_mst_branch_device_by_guid_helper(mgr->mst_primary, guid);
+
+	if (mstb)
+		kref_get(&mstb->kref);
+
+	mutex_unlock(&mgr->lock);
+	return mstb;
+}
+
 static void drm_dp_check_and_send_link_address(struct drm_dp_mst_topology_mgr *mgr,
 					       struct drm_dp_mst_branch *mstb)
 {
@@ -1288,6 +1333,7 @@ static int set_hdr_from_dst_qlock(struct
 				  struct drm_dp_sideband_msg_tx *txmsg)
 {
 	struct drm_dp_mst_branch *mstb = txmsg->dst;
+	u8 req_type;
 
 	/* both msg slots are full */
 	if (txmsg->seqno == -1) {
@@ -1304,7 +1350,13 @@ static int set_hdr_from_dst_qlock(struct
 			txmsg->seqno = 1;
 		mstb->tx_slots[txmsg->seqno] = txmsg;
 	}
-	hdr->broadcast = 0;
+
+	req_type = txmsg->msg[0] & 0x7f;
+	if (req_type == DP_CONNECTION_STATUS_NOTIFY ||
+		req_type == DP_RESOURCE_STATUS_NOTIFY)
+		hdr->broadcast = 1;
+	else
+		hdr->broadcast = 0;
 	hdr->path_msg = txmsg->path_msg;
 	hdr->lct = mstb->lct;
 	hdr->lcr = mstb->lct - 1;
@@ -2092,28 +2144,50 @@ static int drm_dp_mst_handle_up_req(stru
 
 	if (mgr->up_req_recv.have_eomt) {
 		struct drm_dp_sideband_msg_req_body msg;
-		struct drm_dp_mst_branch *mstb;
+		struct drm_dp_mst_branch *mstb = NULL;
 		bool seqno;
-		mstb = drm_dp_get_mst_branch_device(mgr,
-						    mgr->up_req_recv.initial_hdr.lct,
-						    mgr->up_req_recv.initial_hdr.rad);
-		if (!mstb) {
-			DRM_DEBUG_KMS("Got MST reply from unknown device %d\n", mgr->up_req_recv.initial_hdr.lct);
-			memset(&mgr->up_req_recv, 0, sizeof(struct drm_dp_sideband_msg_rx));
-			return 0;
+
+		if (!mgr->up_req_recv.initial_hdr.broadcast) {
+			mstb = drm_dp_get_mst_branch_device(mgr,
+							    mgr->up_req_recv.initial_hdr.lct,
+							    mgr->up_req_recv.initial_hdr.rad);
+			if (!mstb) {
+				DRM_DEBUG_KMS("Got MST reply from unknown device %d\n", mgr->up_req_recv.initial_hdr.lct);
+				memset(&mgr->up_req_recv, 0, sizeof(struct drm_dp_sideband_msg_rx));
+				return 0;
+			}
 		}
 
 		seqno = mgr->up_req_recv.initial_hdr.seqno;
 		drm_dp_sideband_parse_req(&mgr->up_req_recv, &msg);
 
 		if (msg.req_type == DP_CONNECTION_STATUS_NOTIFY) {
-			drm_dp_send_up_ack_reply(mgr, mstb, msg.req_type, seqno, false);
+			drm_dp_send_up_ack_reply(mgr, mgr->mst_primary, msg.req_type, seqno, false);
+
+			if (!mstb)
+				mstb = drm_dp_get_mst_branch_device_by_guid(mgr, msg.u.conn_stat.guid);
+
+			if (!mstb) {
+				DRM_DEBUG_KMS("Got MST reply from unknown device %d\n", mgr->up_req_recv.initial_hdr.lct);
+				memset(&mgr->up_req_recv, 0, sizeof(struct drm_dp_sideband_msg_rx));
+				return 0;
+			}
+
 			drm_dp_update_port(mstb, &msg.u.conn_stat);
 			DRM_DEBUG_KMS("Got CSN: pn: %d ldps:%d ddps: %d mcs: %d ip: %d pdt: %d\n", msg.u.conn_stat.port_number, msg.u.conn_stat.legacy_device_plug_status, msg.u.conn_stat.displayport_device_plug_status, msg.u.conn_stat.message_capability_status, msg.u.conn_stat.input_port, msg.u.conn_stat.peer_device_type);
 			(*mgr->cbs->hotplug)(mgr);
 
 		} else if (msg.req_type == DP_RESOURCE_STATUS_NOTIFY) {
-			drm_dp_send_up_ack_reply(mgr, mstb, msg.req_type, seqno, false);
+			drm_dp_send_up_ack_reply(mgr, mgr->mst_primary, msg.req_type, seqno, false);
+			if (!mstb)
+				mstb = drm_dp_get_mst_branch_device_by_guid(mgr, msg.u.resource_stat.guid);
+
+			if (!mstb) {
+				DRM_DEBUG_KMS("Got MST reply from unknown device %d\n", mgr->up_req_recv.initial_hdr.lct);
+				memset(&mgr->up_req_recv, 0, sizeof(struct drm_dp_sideband_msg_rx));
+				return 0;
+			}
+
 			DRM_DEBUG_KMS("Got RSN: pn: %d avail_pbn %d\n", msg.u.resource_stat.port_number, msg.u.resource_stat.available_pbn);
 		}
 
@@ -2283,6 +2357,7 @@ bool drm_dp_mst_allocate_vcpi(struct drm
 		DRM_DEBUG_KMS("payload: vcpi %d already allocated for pbn %d - requested pbn %d\n", port->vcpi.vcpi, port->vcpi.pbn, pbn);
 		if (pbn == port->vcpi.pbn) {
 			*slots = port->vcpi.num_slots;
+			drm_dp_put_port(port);
 			return true;
 		}
 	}
@@ -2429,32 +2504,31 @@ EXPORT_SYMBOL(drm_dp_check_act_status);
  */
 int drm_dp_calc_pbn_mode(int clock, int bpp)
 {
-	fixed20_12 pix_bw;
-	fixed20_12 fbpp;
-	fixed20_12 result;
-	fixed20_12 margin, tmp;
-	u32 res;
+	u64 kbps;
+	s64 peak_kbps;
+	u32 numerator;
+	u32 denominator;
 
-	pix_bw.full = dfixed_const(clock);
-	fbpp.full = dfixed_const(bpp);
-	tmp.full = dfixed_const(8);
-	fbpp.full = dfixed_div(fbpp, tmp);
+	kbps = clock * bpp;
 
-	result.full = dfixed_mul(pix_bw, fbpp);
-	margin.full = dfixed_const(54);
-	tmp.full = dfixed_const(64);
-	margin.full = dfixed_div(margin, tmp);
-	result.full = dfixed_div(result, margin);
+	/*
+	 * margin 5300ppm + 300ppm ~ 0.6% as per spec, factor is 1.006
+	 * The unit of 54/64Mbytes/sec is an arbitrary unit chosen based on
+	 * common multiplier to render an integer PBN for all link rate/lane
+	 * counts combinations
+	 * calculate
+	 * peak_kbps *= (1006/1000)
+	 * peak_kbps *= (64/54)
+	 * peak_kbps *= 8    convert to bytes
+	 */
 
-	margin.full = dfixed_const(1006);
-	tmp.full = dfixed_const(1000);
-	margin.full = dfixed_div(margin, tmp);
-	result.full = dfixed_mul(result, margin);
+	numerator = 64 * 1006;
+	denominator = 54 * 8 * 1000 * 1000;
 
-	result.full = dfixed_div(result, tmp);
-	result.full = dfixed_ceil(result);
-	res = dfixed_trunc(result);
-	return res;
+	kbps *= numerator;
+	peak_kbps = drm_fixp_from_fraction(kbps, denominator);
+
+	return drm_fixp2int_ceil(peak_kbps);
 }
 EXPORT_SYMBOL(drm_dp_calc_pbn_mode);
 
@@ -2462,11 +2536,23 @@ static int test_calc_pbn_mode(void)
 {
 	int ret;
 	ret = drm_dp_calc_pbn_mode(154000, 30);
-	if (ret != 689)
+	if (ret != 689) {
+		DRM_ERROR("PBN calculation test failed - clock %d, bpp %d, expected PBN %d, actual PBN %d.\n",
+				154000, 30, 689, ret);
 		return -EINVAL;
+	}
 	ret = drm_dp_calc_pbn_mode(234000, 30);
-	if (ret != 1047)
+	if (ret != 1047) {
+		DRM_ERROR("PBN calculation test failed - clock %d, bpp %d, expected PBN %d, actual PBN %d.\n",
+				234000, 30, 1047, ret);
 		return -EINVAL;
+	}
+	ret = drm_dp_calc_pbn_mode(297000, 24);
+	if (ret != 1063) {
+		DRM_ERROR("PBN calculation test failed - clock %d, bpp %d, expected PBN %d, actual PBN %d.\n",
+				297000, 24, 1063, ret);
+		return -EINVAL;
+	}
 	return 0;
 }
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/gpu/drm/i915/intel_display.c linux-libre-3.18.27-gnu/drivers/gpu/drm/i915/intel_display.c
--- linux-libre-3.18.26-gnu/drivers/gpu/drm/i915/intel_display.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/gpu/drm/i915/intel_display.c	2016-02-15 15:47:06.000000000 -0500
@@ -10186,11 +10186,21 @@ connected_sink_compute_bpp(struct intel_
 		pipe_config->pipe_bpp = connector->base.display_info.bpc*3;
 	}
 
-	/* Clamp bpp to 8 on screens without EDID 1.4 */
-	if (connector->base.display_info.bpc == 0 && bpp > 24) {
-		DRM_DEBUG_KMS("clamping display bpp (was %d) to default limit of 24\n",
-			      bpp);
-		pipe_config->pipe_bpp = 24;
+	/* Clamp bpp to default limit on screens without EDID 1.4 */
+	if (connector->base.display_info.bpc == 0) {
+		int type = connector->base.connector_type;
+		int clamp_bpp = 24;
+
+		/* Fall back to 18 bpp when DP sink capability is unknown. */
+		if (type == DRM_MODE_CONNECTOR_DisplayPort ||
+		    type == DRM_MODE_CONNECTOR_eDP)
+			clamp_bpp = 18;
+
+		if (bpp > clamp_bpp) {
+			DRM_DEBUG_KMS("clamping display bpp (was %d) to default limit of %d\n",
+				      bpp, clamp_bpp);
+			pipe_config->pipe_bpp = clamp_bpp;
+		}
 	}
 }
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/gpu/drm/nouveau/nouveau_connector.c linux-libre-3.18.27-gnu/drivers/gpu/drm/nouveau/nouveau_connector.c
--- linux-libre-3.18.26-gnu/drivers/gpu/drm/nouveau/nouveau_connector.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/gpu/drm/nouveau/nouveau_connector.c	2016-02-15 15:47:06.000000000 -0500
@@ -952,10 +952,13 @@ nouveau_connector_hotplug(struct nvif_no
 
 		NV_DEBUG(drm, "%splugged %s\n", plugged ? "" : "un", name);
 
+		mutex_lock(&drm->dev->mode_config.mutex);
 		if (plugged)
 			drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
 		else
 			drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
+		mutex_unlock(&drm->dev->mode_config.mutex);
+
 		drm_helper_hpd_irq_event(connector->dev);
 	}
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/gpu/drm/radeon/radeon_atombios.c linux-libre-3.18.27-gnu/drivers/gpu/drm/radeon/radeon_atombios.c
--- linux-libre-3.18.26-gnu/drivers/gpu/drm/radeon/radeon_atombios.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/gpu/drm/radeon/radeon_atombios.c	2016-02-15 15:47:06.000000000 -0500
@@ -436,7 +436,9 @@ static bool radeon_atom_apply_quirks(str
 	}
 
 	/* Fujitsu D3003-S2 board lists DVI-I as DVI-D and VGA */
-	if (((dev->pdev->device == 0x9802) || (dev->pdev->device == 0x9806)) &&
+	if (((dev->pdev->device == 0x9802) ||
+	     (dev->pdev->device == 0x9805) ||
+	     (dev->pdev->device == 0x9806)) &&
 	    (dev->pdev->subsystem_vendor == 0x1734) &&
 	    (dev->pdev->subsystem_device == 0x11bd)) {
 		if (*connector_type == DRM_MODE_CONNECTOR_VGA) {
@@ -447,14 +449,6 @@ static bool radeon_atom_apply_quirks(str
 		}
 	}
 
-	/* Fujitsu D3003-S2 board lists DVI-I as DVI-I and VGA */
-	if ((dev->pdev->device == 0x9805) &&
-	    (dev->pdev->subsystem_vendor == 0x1734) &&
-	    (dev->pdev->subsystem_device == 0x11bd)) {
-		if (*connector_type == DRM_MODE_CONNECTOR_VGA)
-			return false;
-	}
-
 	return true;
 }
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/gpu/drm/radeon/radeon_device.c linux-libre-3.18.27-gnu/drivers/gpu/drm/radeon/radeon_device.c
--- linux-libre-3.18.26-gnu/drivers/gpu/drm/radeon/radeon_device.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/gpu/drm/radeon/radeon_device.c	2016-02-15 15:47:06.000000000 -0500
@@ -1665,6 +1665,7 @@ int radeon_resume_kms(struct drm_device
 	}
 
 	drm_kms_helper_poll_enable(dev);
+	drm_helper_hpd_irq_event(dev);
 
 	/* set the power state here in case we are a PX system or headless */
 	if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled)
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/gpu/drm/radeon/radeon_object.c linux-libre-3.18.27-gnu/drivers/gpu/drm/radeon/radeon_object.c
--- linux-libre-3.18.26-gnu/drivers/gpu/drm/radeon/radeon_object.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/gpu/drm/radeon/radeon_object.c	2016-02-15 15:47:06.000000000 -0500
@@ -33,6 +33,7 @@
 #include <linux/slab.h>
 #include <drm/drmP.h>
 #include <drm/radeon_drm.h>
+#include <drm/drm_cache.h>
 #include "radeon.h"
 #include "radeon_trace.h"
 
@@ -204,7 +205,7 @@ int radeon_bo_create(struct radeon_devic
 	/* XXX: Write-combined CPU mappings of GTT seem broken on 32-bit
 	 * See https://bugs.freedesktop.org/show_bug.cgi?id=84627
 	 */
-	bo->flags &= ~RADEON_GEM_GTT_WC;
+	bo->flags &= ~(RADEON_GEM_GTT_WC | RADEON_GEM_GTT_UC);
 #elif defined(CONFIG_X86) && !defined(CONFIG_X86_PAT)
 	/* Don't try to enable write-combining when it can't work, or things
 	 * may be slow
@@ -216,7 +217,13 @@ int radeon_bo_create(struct radeon_devic
 
 	DRM_INFO_ONCE("Please enable CONFIG_MTRR and CONFIG_X86_PAT for "
 		      "better performance thanks to write-combining\n");
-	bo->flags &= ~RADEON_GEM_GTT_WC;
+	bo->flags &= ~(RADEON_GEM_GTT_WC | RADEON_GEM_GTT_UC);
+#else
+	/* For architectures that don't support WC memory,
+	 * mask out the WC flag from the BO
+	 */
+	if (!drm_arch_can_wc_memory())
+		bo->flags &= ~RADEON_GEM_GTT_WC;
 #endif
 
 	radeon_ttm_placement_from_domain(bo, domain);
@@ -798,3 +805,22 @@ int radeon_bo_wait(struct radeon_bo *bo,
 	ttm_bo_unreserve(&bo->tbo);
 	return r;
 }
+
+/**
+ * radeon_bo_fence - add fence to buffer object
+ *
+ * @bo: buffer object in question
+ * @fence: fence to add
+ * @shared: true if fence should be added shared
+ *
+ */
+void radeon_bo_fence(struct radeon_bo *bo, struct radeon_fence *fence,
+                     bool shared)
+{
+	struct reservation_object *resv = bo->tbo.resv;
+
+	if (shared)
+		reservation_object_add_shared_fence(resv, &fence->base);
+	else
+		reservation_object_add_excl_fence(resv, &fence->base);
+}
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/gpu/drm/radeon/radeon_object.h linux-libre-3.18.27-gnu/drivers/gpu/drm/radeon/radeon_object.h
--- linux-libre-3.18.26-gnu/drivers/gpu/drm/radeon/radeon_object.h	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/gpu/drm/radeon/radeon_object.h	2016-02-15 15:47:06.000000000 -0500
@@ -155,6 +155,8 @@ extern void radeon_bo_move_notify(struct
 				  struct ttm_mem_reg *new_mem);
 extern int radeon_bo_fault_reserve_notify(struct ttm_buffer_object *bo);
 extern int radeon_bo_get_surface_reg(struct radeon_bo *bo);
+extern void radeon_bo_fence(struct radeon_bo *bo, struct radeon_fence *fence,
+			    bool shared);
 
 /*
  * sub allocation
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/gpu/drm/radeon/radeon_vm.c linux-libre-3.18.27-gnu/drivers/gpu/drm/radeon/radeon_vm.c
--- linux-libre-3.18.26-gnu/drivers/gpu/drm/radeon/radeon_vm.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/gpu/drm/radeon/radeon_vm.c	2016-02-15 15:47:06.000000000 -0500
@@ -143,7 +143,7 @@ struct radeon_cs_reloc *radeon_vm_get_bo
 	list[0].prefered_domains = RADEON_GEM_DOMAIN_VRAM;
 	list[0].allowed_domains = RADEON_GEM_DOMAIN_VRAM;
 	list[0].tv.bo = &vm->page_directory->tbo;
-	list[0].tv.shared = false;
+	list[0].tv.shared = true;
 	list[0].tiling_flags = 0;
 	list[0].handle = 0;
 	list_add(&list[0].tv.head, head);
@@ -157,7 +157,7 @@ struct radeon_cs_reloc *radeon_vm_get_bo
 		list[idx].prefered_domains = RADEON_GEM_DOMAIN_VRAM;
 		list[idx].allowed_domains = RADEON_GEM_DOMAIN_VRAM;
 		list[idx].tv.bo = &list[idx].robj->tbo;
-		list[idx].tv.shared = false;
+		list[idx].tv.shared = true;
 		list[idx].tiling_flags = 0;
 		list[idx].handle = 0;
 		list_add(&list[idx++].tv.head, head);
@@ -387,35 +387,25 @@ static void radeon_vm_set_pages(struct r
 static int radeon_vm_clear_bo(struct radeon_device *rdev,
 			      struct radeon_bo *bo)
 {
-        struct ttm_validate_buffer tv;
-        struct ww_acquire_ctx ticket;
-        struct list_head head;
 	struct radeon_ib ib;
 	unsigned entries;
 	uint64_t addr;
 	int r;
 
-        memset(&tv, 0, sizeof(tv));
-        tv.bo = &bo->tbo;
-	tv.shared = false;
-
-        INIT_LIST_HEAD(&head);
-        list_add(&tv.head, &head);
-
-        r = ttm_eu_reserve_buffers(&ticket, &head, true);
-        if (r)
+	r = radeon_bo_reserve(bo, false);
+	if (r)
 		return r;
 
-        r = ttm_bo_validate(&bo->tbo, &bo->placement, true, false);
-        if (r)
-                goto error;
+	r = ttm_bo_validate(&bo->tbo, &bo->placement, true, false);
+	if (r)
+		goto error_unreserve;
 
 	addr = radeon_bo_gpu_offset(bo);
 	entries = radeon_bo_size(bo) / 8;
 
 	r = radeon_ib_get(rdev, R600_RING_TYPE_DMA_INDEX, &ib, NULL, 256);
 	if (r)
-                goto error;
+		goto error_unreserve;
 
 	ib.length_dw = 0;
 
@@ -425,15 +415,15 @@ static int radeon_vm_clear_bo(struct rad
 
 	r = radeon_ib_schedule(rdev, &ib, NULL, false);
 	if (r)
-                goto error;
+		goto error_free;
 
-	ttm_eu_fence_buffer_objects(&ticket, &head, &ib.fence->base);
-	radeon_ib_free(rdev, &ib);
+	radeon_bo_fence(bo, ib.fence, false);
 
-	return 0;
+error_free:
+	radeon_ib_free(rdev, &ib);
 
-error:
-	ttm_eu_backoff_reservation(&ticket, &head);
+error_unreserve:
+	radeon_bo_unreserve(bo);
 	return r;
 }
 
@@ -464,14 +454,14 @@ int radeon_vm_bo_set_addr(struct radeon_
 
 	if (soffset) {
 		/* make sure object fit at this offset */
-		eoffset = soffset + size;
+		eoffset = soffset + size - 1;
 		if (soffset >= eoffset) {
 			return -EINVAL;
 		}
 
 		last_pfn = eoffset / RADEON_GPU_PAGE_SIZE;
-		if (last_pfn > rdev->vm_manager.max_pfn) {
-			dev_err(rdev->dev, "va above limit (0x%08X > 0x%08X)\n",
+		if (last_pfn >= rdev->vm_manager.max_pfn) {
+			dev_err(rdev->dev, "va above limit (0x%08X >= 0x%08X)\n",
 				last_pfn, rdev->vm_manager.max_pfn);
 			return -EINVAL;
 		}
@@ -485,7 +475,7 @@ int radeon_vm_bo_set_addr(struct radeon_
 	eoffset /= RADEON_GPU_PAGE_SIZE;
 	if (soffset || eoffset) {
 		struct interval_tree_node *it;
-		it = interval_tree_iter_first(&vm->va, soffset, eoffset - 1);
+		it = interval_tree_iter_first(&vm->va, soffset, eoffset);
 		if (it && it != &bo_va->it) {
 			struct radeon_bo_va *tmp;
 			tmp = container_of(it, struct radeon_bo_va, it);
@@ -524,7 +514,7 @@ int radeon_vm_bo_set_addr(struct radeon_
 
 	if (soffset || eoffset) {
 		bo_va->it.start = soffset;
-		bo_va->it.last = eoffset - 1;
+		bo_va->it.last = eoffset;
 		interval_tree_insert(&bo_va->it, &vm->va);
 	}
 
@@ -712,6 +702,7 @@ int radeon_vm_update_page_directory(stru
 			radeon_ib_free(rdev, &ib);
 			return r;
 		}
+		radeon_bo_fence(pd, ib.fence, false);
 		radeon_fence_unref(&vm->fence);
 		vm->fence = radeon_fence_ref(ib.fence);
 		radeon_fence_unref(&vm->last_flush);
@@ -870,6 +861,31 @@ static void radeon_vm_update_ptes(struct
 }
 
 /**
+ * radeon_vm_fence_pts - fence page tables after an update
+ *
+ * @vm: requested vm
+ * @start: start of GPU address range
+ * @end: end of GPU address range
+ * @fence: fence to use
+ *
+ * Fence the page tables in the range @start - @end (cayman+).
+ *
+ * Global and local mutex must be locked!
+ */
+static void radeon_vm_fence_pts(struct radeon_vm *vm,
+				uint64_t start, uint64_t end,
+				struct radeon_fence *fence)
+{
+	unsigned i;
+
+	start >>= radeon_vm_block_size;
+	end = (end - 1) >> radeon_vm_block_size;
+
+	for (i = start; i <= end; ++i)
+		radeon_bo_fence(vm->page_tables[i].bo, fence, false);
+}
+
+/**
  * radeon_vm_bo_update - map a bo into the vm page table
  *
  * @rdev: radeon_device pointer
@@ -981,6 +997,7 @@ int radeon_vm_bo_update(struct radeon_de
 		radeon_ib_free(rdev, &ib);
 		return r;
 	}
+	radeon_vm_fence_pts(vm, bo_va->it.start, bo_va->it.last + 1, ib.fence);
 	radeon_fence_unref(&vm->fence);
 	vm->fence = radeon_fence_ref(ib.fence);
 	radeon_ib_free(rdev, &ib);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c linux-libre-3.18.27-gnu/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
--- linux-libre-3.18.26-gnu/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c	2016-02-15 15:47:06.000000000 -0500
@@ -25,6 +25,7 @@
  *
  **************************************************************************/
 #include <linux/module.h>
+#include <linux/console.h>
 
 #include <drm/drmP.h>
 #include "vmwgfx_drv.h"
@@ -1447,6 +1448,12 @@ static int vmw_probe(struct pci_dev *pde
 static int __init vmwgfx_init(void)
 {
 	int ret;
+
+#ifdef CONFIG_VGA_CONSOLE
+	if (vgacon_text_force())
+		return -EINVAL;
+#endif
+
 	ret = drm_pci_init(&driver, &vmw_pci_driver);
 	if (ret)
 		DRM_ERROR("Failed initializing DRM.\n");
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/infiniband/hw/qib/qib_qp.c linux-libre-3.18.27-gnu/drivers/infiniband/hw/qib/qib_qp.c
--- linux-libre-3.18.26-gnu/drivers/infiniband/hw/qib/qib_qp.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/infiniband/hw/qib/qib_qp.c	2016-02-15 15:47:06.000000000 -0500
@@ -100,9 +100,10 @@ static u32 credit_table[31] = {
 	32768                   /* 1E */
 };
 
-static void get_map_page(struct qib_qpn_table *qpt, struct qpn_map *map)
+static void get_map_page(struct qib_qpn_table *qpt, struct qpn_map *map,
+			 gfp_t gfp)
 {
-	unsigned long page = get_zeroed_page(GFP_KERNEL);
+	unsigned long page = get_zeroed_page(gfp);
 
 	/*
 	 * Free the page if someone raced with us installing it.
@@ -121,7 +122,7 @@ static void get_map_page(struct qib_qpn_
  * zero/one for QP type IB_QPT_SMI/IB_QPT_GSI.
  */
 static int alloc_qpn(struct qib_devdata *dd, struct qib_qpn_table *qpt,
-		     enum ib_qp_type type, u8 port)
+		     enum ib_qp_type type, u8 port, gfp_t gfp)
 {
 	u32 i, offset, max_scan, qpn;
 	struct qpn_map *map;
@@ -151,7 +152,7 @@ static int alloc_qpn(struct qib_devdata
 	max_scan = qpt->nmaps - !offset;
 	for (i = 0;;) {
 		if (unlikely(!map->page)) {
-			get_map_page(qpt, map);
+			get_map_page(qpt, map, gfp);
 			if (unlikely(!map->page))
 				break;
 		}
@@ -983,13 +984,21 @@ struct ib_qp *qib_create_qp(struct ib_pd
 	size_t sz;
 	size_t sg_list_sz;
 	struct ib_qp *ret;
+	gfp_t gfp;
+
 
 	if (init_attr->cap.max_send_sge > ib_qib_max_sges ||
 	    init_attr->cap.max_send_wr > ib_qib_max_qp_wrs ||
-	    init_attr->create_flags) {
-		ret = ERR_PTR(-EINVAL);
-		goto bail;
-	}
+	    init_attr->create_flags & ~(IB_QP_CREATE_USE_GFP_NOIO))
+		return ERR_PTR(-EINVAL);
+
+	/* GFP_NOIO is applicable in RC QPs only */
+	if (init_attr->create_flags & IB_QP_CREATE_USE_GFP_NOIO &&
+	    init_attr->qp_type != IB_QPT_RC)
+		return ERR_PTR(-EINVAL);
+
+	gfp = init_attr->create_flags & IB_QP_CREATE_USE_GFP_NOIO ?
+			GFP_NOIO : GFP_KERNEL;
 
 	/* Check receive queue parameters if no SRQ is specified. */
 	if (!init_attr->srq) {
@@ -1021,7 +1030,8 @@ struct ib_qp *qib_create_qp(struct ib_pd
 		sz = sizeof(struct qib_sge) *
 			init_attr->cap.max_send_sge +
 			sizeof(struct qib_swqe);
-		swq = vmalloc((init_attr->cap.max_send_wr + 1) * sz);
+		swq = __vmalloc((init_attr->cap.max_send_wr + 1) * sz,
+				gfp, PAGE_KERNEL);
 		if (swq == NULL) {
 			ret = ERR_PTR(-ENOMEM);
 			goto bail;
@@ -1037,13 +1047,13 @@ struct ib_qp *qib_create_qp(struct ib_pd
 		} else if (init_attr->cap.max_recv_sge > 1)
 			sg_list_sz = sizeof(*qp->r_sg_list) *
 				(init_attr->cap.max_recv_sge - 1);
-		qp = kzalloc(sz + sg_list_sz, GFP_KERNEL);
+		qp = kzalloc(sz + sg_list_sz, gfp);
 		if (!qp) {
 			ret = ERR_PTR(-ENOMEM);
 			goto bail_swq;
 		}
 		RCU_INIT_POINTER(qp->next, NULL);
-		qp->s_hdr = kzalloc(sizeof(*qp->s_hdr), GFP_KERNEL);
+		qp->s_hdr = kzalloc(sizeof(*qp->s_hdr), gfp);
 		if (!qp->s_hdr) {
 			ret = ERR_PTR(-ENOMEM);
 			goto bail_qp;
@@ -1058,8 +1068,16 @@ struct ib_qp *qib_create_qp(struct ib_pd
 			qp->r_rq.max_sge = init_attr->cap.max_recv_sge;
 			sz = (sizeof(struct ib_sge) * qp->r_rq.max_sge) +
 				sizeof(struct qib_rwqe);
-			qp->r_rq.wq = vmalloc_user(sizeof(struct qib_rwq) +
-						   qp->r_rq.size * sz);
+			if (gfp != GFP_NOIO)
+				qp->r_rq.wq = vmalloc_user(
+						sizeof(struct qib_rwq) +
+						qp->r_rq.size * sz);
+			else
+				qp->r_rq.wq = __vmalloc(
+						sizeof(struct qib_rwq) +
+						qp->r_rq.size * sz,
+						gfp, PAGE_KERNEL);
+
 			if (!qp->r_rq.wq) {
 				ret = ERR_PTR(-ENOMEM);
 				goto bail_qp;
@@ -1090,7 +1108,7 @@ struct ib_qp *qib_create_qp(struct ib_pd
 		dev = to_idev(ibpd->device);
 		dd = dd_from_dev(dev);
 		err = alloc_qpn(dd, &dev->qpn_table, init_attr->qp_type,
-				init_attr->port_num);
+				init_attr->port_num, gfp);
 		if (err < 0) {
 			ret = ERR_PTR(err);
 			vfree(qp->r_rq.wq);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/infiniband/hw/qib/qib_verbs_mcast.c linux-libre-3.18.27-gnu/drivers/infiniband/hw/qib/qib_verbs_mcast.c
--- linux-libre-3.18.26-gnu/drivers/infiniband/hw/qib/qib_verbs_mcast.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/infiniband/hw/qib/qib_verbs_mcast.c	2016-02-15 15:47:06.000000000 -0500
@@ -286,15 +286,13 @@ int qib_multicast_detach(struct ib_qp *i
 	struct qib_ibdev *dev = to_idev(ibqp->device);
 	struct qib_ibport *ibp = to_iport(ibqp->device, qp->port_num);
 	struct qib_mcast *mcast = NULL;
-	struct qib_mcast_qp *p, *tmp;
+	struct qib_mcast_qp *p, *tmp, *delp = NULL;
 	struct rb_node *n;
 	int last = 0;
 	int ret;
 
-	if (ibqp->qp_num <= 1 || qp->state == IB_QPS_RESET) {
-		ret = -EINVAL;
-		goto bail;
-	}
+	if (ibqp->qp_num <= 1 || qp->state == IB_QPS_RESET)
+		return -EINVAL;
 
 	spin_lock_irq(&ibp->lock);
 
@@ -303,8 +301,7 @@ int qib_multicast_detach(struct ib_qp *i
 	while (1) {
 		if (n == NULL) {
 			spin_unlock_irq(&ibp->lock);
-			ret = -EINVAL;
-			goto bail;
+			return -EINVAL;
 		}
 
 		mcast = rb_entry(n, struct qib_mcast, rb_node);
@@ -328,6 +325,7 @@ int qib_multicast_detach(struct ib_qp *i
 		 */
 		list_del_rcu(&p->list);
 		mcast->n_attached--;
+		delp = p;
 
 		/* If this was the last attached QP, remove the GID too. */
 		if (list_empty(&mcast->qp_list)) {
@@ -338,15 +336,16 @@ int qib_multicast_detach(struct ib_qp *i
 	}
 
 	spin_unlock_irq(&ibp->lock);
+	/* QP not attached */
+	if (!delp)
+		return -EINVAL;
+	/*
+	 * Wait for any list walkers to finish before freeing the
+	 * list element.
+	 */
+	wait_event(mcast->wait, atomic_read(&mcast->refcount) <= 1);
+	qib_mcast_qp_free(delp);
 
-	if (p) {
-		/*
-		 * Wait for any list walkers to finish before freeing the
-		 * list element.
-		 */
-		wait_event(mcast->wait, atomic_read(&mcast->refcount) <= 1);
-		qib_mcast_qp_free(p);
-	}
 	if (last) {
 		atomic_dec(&mcast->refcount);
 		wait_event(mcast->wait, !atomic_read(&mcast->refcount));
@@ -355,11 +354,7 @@ int qib_multicast_detach(struct ib_qp *i
 		dev->n_mcast_grps_allocated--;
 		spin_unlock_irq(&dev->n_mcast_grps_lock);
 	}
-
-	ret = 0;
-
-bail:
-	return ret;
+	return 0;
 }
 
 int qib_mcast_tree_empty(struct qib_ibport *ibp)
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/input/mouse/elantech.c linux-libre-3.18.27-gnu/drivers/input/mouse/elantech.c
--- linux-libre-3.18.26-gnu/drivers/input/mouse/elantech.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/input/mouse/elantech.c	2016-02-15 15:47:06.000000000 -0500
@@ -1214,7 +1214,7 @@ static int elantech_set_input_params(str
 			input_set_abs_params(dev, ABS_TOOL_WIDTH, ETP_WMIN_V2,
 					     ETP_WMAX_V2, 0, 0);
 		}
-		input_mt_init_slots(dev, 2, 0);
+		input_mt_init_slots(dev, 2, INPUT_MT_SEMI_MT);
 		input_set_abs_params(dev, ABS_MT_POSITION_X, x_min, x_max, 0, 0);
 		input_set_abs_params(dev, ABS_MT_POSITION_Y, y_min, y_max, 0, 0);
 		break;
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/input/serio/i8042-x86ia64io.h linux-libre-3.18.27-gnu/drivers/input/serio/i8042-x86ia64io.h
--- linux-libre-3.18.26-gnu/drivers/input/serio/i8042-x86ia64io.h	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/input/serio/i8042-x86ia64io.h	2016-02-15 15:47:06.000000000 -0500
@@ -258,6 +258,13 @@ static const struct dmi_system_id __init
 		},
 	},
 	{
+		/* Fujitsu Lifebook U745 */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK U745"),
+		},
+	},
+	{
 		/* Fujitsu T70H */
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/irqchip/irq-atmel-aic-common.c linux-libre-3.18.27-gnu/drivers/irqchip/irq-atmel-aic-common.c
--- linux-libre-3.18.26-gnu/drivers/irqchip/irq-atmel-aic-common.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/irqchip/irq-atmel-aic-common.c	2016-02-15 15:47:06.000000000 -0500
@@ -86,7 +86,7 @@ int aic_common_set_priority(int priority
 	    priority > AT91_AIC_IRQ_MAX_PRIORITY)
 		return -EINVAL;
 
-	*val &= AT91_AIC_PRIOR;
+	*val &= ~AT91_AIC_PRIOR;
 	*val |= priority;
 
 	return 0;
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/isdn/i4l/isdn_ppp.c linux-libre-3.18.27-gnu/drivers/isdn/i4l/isdn_ppp.c
--- linux-libre-3.18.26-gnu/drivers/isdn/i4l/isdn_ppp.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/isdn/i4l/isdn_ppp.c	2016-02-15 15:47:06.000000000 -0500
@@ -301,6 +301,8 @@ isdn_ppp_open(int min, struct file *file
 	is->compflags = 0;
 
 	is->reset = isdn_ppp_ccp_reset_alloc(is);
+	if (!is->reset)
+		return -ENOMEM;
 
 	is->lp = NULL;
 	is->mp_seqno = 0;       /* MP sequence number */
@@ -320,6 +322,10 @@ isdn_ppp_open(int min, struct file *file
 	 * VJ header compression init
 	 */
 	is->slcomp = slhc_init(16, 16);	/* not necessary for 2. link in bundle */
+	if (IS_ERR(is->slcomp)) {
+		isdn_ppp_ccp_reset_free(is);
+		return PTR_ERR(is->slcomp);
+	}
 #endif
 #ifdef CONFIG_IPPP_FILTER
 	is->pass_filter = NULL;
@@ -567,10 +573,8 @@ isdn_ppp_ioctl(int min, struct file *fil
 			is->maxcid = val;
 #ifdef CONFIG_ISDN_PPP_VJ
 			sltmp = slhc_init(16, val);
-			if (!sltmp) {
-				printk(KERN_ERR "ippp, can't realloc slhc struct\n");
-				return -ENOMEM;
-			}
+			if (IS_ERR(sltmp))
+				return PTR_ERR(sltmp);
 			if (is->slcomp)
 				slhc_free(is->slcomp);
 			is->slcomp = sltmp;
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/md/bcache/btree.c linux-libre-3.18.27-gnu/drivers/md/bcache/btree.c
--- linux-libre-3.18.26-gnu/drivers/md/bcache/btree.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/md/bcache/btree.c	2016-02-15 15:47:06.000000000 -0500
@@ -1741,6 +1741,7 @@ static void bch_btree_gc(struct cache_se
 	do {
 		ret = btree_root(gc_root, c, &op, &writes, &stats);
 		closure_sync(&writes);
+		cond_resched();
 
 		if (ret && ret != -EAGAIN)
 			pr_warn("gc failed!");
@@ -2162,8 +2163,10 @@ int bch_btree_insert_check_key(struct bt
 		rw_lock(true, b, b->level);
 
 		if (b->key.ptr[0] != btree_ptr ||
-		    b->seq != seq + 1)
+                   b->seq != seq + 1) {
+                       op->lock = b->level;
 			goto out;
+               }
 	}
 
 	SET_KEY_PTRS(check_key, 1);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/md/bcache/super.c linux-libre-3.18.27-gnu/drivers/md/bcache/super.c
--- linux-libre-3.18.26-gnu/drivers/md/bcache/super.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/md/bcache/super.c	2016-02-15 15:47:06.000000000 -0500
@@ -708,6 +708,8 @@ static void bcache_device_link(struct bc
 	WARN(sysfs_create_link(&d->kobj, &c->kobj, "cache") ||
 	     sysfs_create_link(&c->kobj, &d->kobj, d->name),
 	     "Couldn't create device <-> cache set symlinks");
+
+	clear_bit(BCACHE_DEV_UNLINK_DONE, &d->flags);
 }
 
 static void bcache_device_detach(struct bcache_device *d)
@@ -878,8 +880,11 @@ void bch_cached_dev_run(struct cached_de
 	buf[SB_LABEL_SIZE] = '\0';
 	env[2] = kasprintf(GFP_KERNEL, "CACHED_LABEL=%s", buf);
 
-	if (atomic_xchg(&dc->running, 1))
+	if (atomic_xchg(&dc->running, 1)) {
+		kfree(env[1]);
+		kfree(env[2]);
 		return;
+	}
 
 	if (!d->c &&
 	    BDEV_STATE(&dc->sb) != BDEV_STATE_NONE) {
@@ -1967,6 +1972,8 @@ static ssize_t register_bcache(struct ko
 			else
 				err = "device busy";
 			mutex_unlock(&bch_register_lock);
+			if (attr == &ksysfs_register_quiet)
+				goto out;
 		}
 		goto err;
 	}
@@ -2005,8 +2012,7 @@ out:
 err_close:
 	blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
 err:
-	if (attr != &ksysfs_register_quiet)
-		pr_info("error opening %s: %s", path, err);
+	pr_info("error opening %s: %s", path, err);
 	ret = -EINVAL;
 	goto out;
 }
@@ -2100,8 +2106,10 @@ static int __init bcache_init(void)
 	closure_debug_init();
 
 	bcache_major = register_blkdev(0, "bcache");
-	if (bcache_major < 0)
+	if (bcache_major < 0) {
+		unregister_reboot_notifier(&reboot);
 		return bcache_major;
+	}
 
 	if (!(bcache_wq = create_workqueue("bcache")) ||
 	    !(bcache_kobj = kobject_create_and_add("bcache", fs_kobj)) ||
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/md/bcache/writeback.c linux-libre-3.18.27-gnu/drivers/md/bcache/writeback.c
--- linux-libre-3.18.26-gnu/drivers/md/bcache/writeback.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/md/bcache/writeback.c	2016-02-15 15:47:06.000000000 -0500
@@ -323,6 +323,10 @@ void bcache_dev_sectors_dirty_add(struct
 
 static bool dirty_pred(struct keybuf *buf, struct bkey *k)
 {
+	struct cached_dev *dc = container_of(buf, struct cached_dev, writeback_keys);
+
+	BUG_ON(KEY_INODE(k) != dc->disk.id);
+
 	return KEY_DIRTY(k);
 }
 
@@ -372,11 +376,24 @@ next:
 	}
 }
 
+/*
+ * Returns true if we scanned the entire disk
+ */
 static bool refill_dirty(struct cached_dev *dc)
 {
 	struct keybuf *buf = &dc->writeback_keys;
+	struct bkey start = KEY(dc->disk.id, 0, 0);
 	struct bkey end = KEY(dc->disk.id, MAX_KEY_OFFSET, 0);
-	bool searched_from_start = false;
+	struct bkey start_pos;
+
+	/*
+	 * make sure keybuf pos is inside the range for this disk - at bringup
+	 * we might not be attached yet so this disk's inode nr isn't
+	 * initialized then
+	 */
+	if (bkey_cmp(&buf->last_scanned, &start) < 0 ||
+	    bkey_cmp(&buf->last_scanned, &end) > 0)
+		buf->last_scanned = start;
 
 	if (dc->partial_stripes_expensive) {
 		refill_full_stripes(dc);
@@ -384,14 +401,20 @@ static bool refill_dirty(struct cached_d
 			return false;
 	}
 
-	if (bkey_cmp(&buf->last_scanned, &end) >= 0) {
-		buf->last_scanned = KEY(dc->disk.id, 0, 0);
-		searched_from_start = true;
-	}
-
+	start_pos = buf->last_scanned;
 	bch_refill_keybuf(dc->disk.c, buf, &end, dirty_pred);
 
-	return bkey_cmp(&buf->last_scanned, &end) >= 0 && searched_from_start;
+	if (bkey_cmp(&buf->last_scanned, &end) < 0)
+		return false;
+
+	/*
+	 * If we get to the end start scanning again from the beginning, and
+	 * only scan up to where we initially started scanning from:
+	 */
+	buf->last_scanned = start;
+	bch_refill_keybuf(dc->disk.c, buf, &start_pos, dirty_pred);
+
+	return bkey_cmp(&buf->last_scanned, &start_pos) >= 0;
 }
 
 static int bch_writeback_thread(void *arg)
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/md/bcache/writeback.h linux-libre-3.18.27-gnu/drivers/md/bcache/writeback.h
--- linux-libre-3.18.26-gnu/drivers/md/bcache/writeback.h	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/md/bcache/writeback.h	2016-02-15 15:47:06.000000000 -0500
@@ -63,7 +63,8 @@ static inline bool should_writeback(stru
 
 static inline void bch_writeback_queue(struct cached_dev *dc)
 {
-	wake_up_process(dc->writeback_thread);
+	if (!IS_ERR_OR_NULL(dc->writeback_thread))
+		wake_up_process(dc->writeback_thread);
 }
 
 static inline void bch_writeback_add(struct cached_dev *dc)
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/md/dm-exception-store.h linux-libre-3.18.27-gnu/drivers/md/dm-exception-store.h
--- linux-libre-3.18.26-gnu/drivers/md/dm-exception-store.h	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/md/dm-exception-store.h	2016-02-15 15:47:06.000000000 -0500
@@ -70,7 +70,7 @@ struct dm_exception_store_type {
 	 * Update the metadata with this exception.
 	 */
 	void (*commit_exception) (struct dm_exception_store *store,
-				  struct dm_exception *e,
+				  struct dm_exception *e, int valid,
 				  void (*callback) (void *, int success),
 				  void *callback_context);
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/md/dm-snap.c linux-libre-3.18.27-gnu/drivers/md/dm-snap.c
--- linux-libre-3.18.26-gnu/drivers/md/dm-snap.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/md/dm-snap.c	2016-02-15 15:47:06.000000000 -0500
@@ -1428,8 +1428,9 @@ static void __invalidate_snapshot(struct
 	dm_table_event(s->ti->table);
 }
 
-static void pending_complete(struct dm_snap_pending_exception *pe, int success)
+static void pending_complete(void *context, int success)
 {
+	struct dm_snap_pending_exception *pe = context;
 	struct dm_exception *e;
 	struct dm_snapshot *s = pe->snap;
 	struct bio *origin_bios = NULL;
@@ -1500,24 +1501,13 @@ out:
 	free_pending_exception(pe);
 }
 
-static void commit_callback(void *context, int success)
-{
-	struct dm_snap_pending_exception *pe = context;
-
-	pending_complete(pe, success);
-}
-
 static void complete_exception(struct dm_snap_pending_exception *pe)
 {
 	struct dm_snapshot *s = pe->snap;
 
-	if (unlikely(pe->copy_error))
-		pending_complete(pe, 0);
-
-	else
-		/* Update the metadata if we are persistent */
-		s->store->type->commit_exception(s->store, &pe->e,
-						 commit_callback, pe);
+	/* Update the metadata if we are persistent */
+	s->store->type->commit_exception(s->store, &pe->e, !pe->copy_error,
+					 pending_complete, pe);
 }
 
 /*
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/md/dm-snap-persistent.c linux-libre-3.18.27-gnu/drivers/md/dm-snap-persistent.c
--- linux-libre-3.18.26-gnu/drivers/md/dm-snap-persistent.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/md/dm-snap-persistent.c	2016-02-15 15:47:06.000000000 -0500
@@ -700,7 +700,7 @@ static int persistent_prepare_exception(
 }
 
 static void persistent_commit_exception(struct dm_exception_store *store,
-					struct dm_exception *e,
+					struct dm_exception *e, int valid,
 					void (*callback) (void *, int success),
 					void *callback_context)
 {
@@ -709,6 +709,9 @@ static void persistent_commit_exception(
 	struct core_exception ce;
 	struct commit_callback *cb;
 
+	if (!valid)
+		ps->valid = 0;
+
 	ce.old_chunk = e->old_chunk;
 	ce.new_chunk = e->new_chunk;
 	write_exception(ps, ps->current_committed++, &ce);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/md/dm-snap-transient.c linux-libre-3.18.27-gnu/drivers/md/dm-snap-transient.c
--- linux-libre-3.18.26-gnu/drivers/md/dm-snap-transient.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/md/dm-snap-transient.c	2016-02-15 15:47:06.000000000 -0500
@@ -52,12 +52,12 @@ static int transient_prepare_exception(s
 }
 
 static void transient_commit_exception(struct dm_exception_store *store,
-				       struct dm_exception *e,
+				       struct dm_exception *e, int valid,
 				       void (*callback) (void *, int success),
 				       void *callback_context)
 {
 	/* Just succeed */
-	callback(callback_context, 1);
+	callback(callback_context, valid);
 }
 
 static void transient_usage(struct dm_exception_store *store,
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/md/dm-thin.c linux-libre-3.18.27-gnu/drivers/md/dm-thin.c
--- linux-libre-3.18.26-gnu/drivers/md/dm-thin.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/md/dm-thin.c	2016-02-15 15:47:06.000000000 -0500
@@ -2790,8 +2790,8 @@ static void pool_postsuspend(struct dm_t
 	struct pool_c *pt = ti->private;
 	struct pool *pool = pt->pool;
 
-	cancel_delayed_work(&pool->waker);
-	cancel_delayed_work(&pool->no_space_timeout);
+	cancel_delayed_work_sync(&pool->waker);
+	cancel_delayed_work_sync(&pool->no_space_timeout);
 	flush_workqueue(pool->wq);
 	(void) commit(pool);
 }
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/media/dvb-core/dvb_frontend.c linux-libre-3.18.27-gnu/drivers/media/dvb-core/dvb_frontend.c
--- linux-libre-3.18.26-gnu/drivers/media/dvb-core/dvb_frontend.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/media/dvb-core/dvb_frontend.c	2016-02-15 15:47:06.000000000 -0500
@@ -2214,9 +2214,9 @@ static int dvb_frontend_ioctl_legacy(str
 		dev_dbg(fe->dvb->device, "%s: current delivery system on cache: %d, V3 type: %d\n",
 				 __func__, c->delivery_system, fe->ops.info.type);
 
-		/* Force the CAN_INVERSION_AUTO bit on. If the frontend doesn't
-		 * do it, it is done for it. */
-		info->caps |= FE_CAN_INVERSION_AUTO;
+		/* Set CAN_INVERSION_AUTO bit on in other than oneshot mode */
+		if (!(fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT))
+			info->caps |= FE_CAN_INVERSION_AUTO;
 		err = 0;
 		break;
 	}
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/media/dvb-frontends/tda1004x.c linux-libre-3.18.27-gnu/drivers/media/dvb-frontends/tda1004x.c
--- linux-libre-3.18.26-gnu/drivers/media/dvb-frontends/tda1004x.c	2016-02-16 19:57:08.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/media/dvb-frontends/tda1004x.c	2016-02-16 21:17:29.000000000 -0500
@@ -895,9 +895,18 @@ static int tda1004x_get_fe(struct dvb_fr
 {
 	struct dtv_frontend_properties *fe_params = &fe->dtv_property_cache;
 	struct tda1004x_state* state = fe->demodulator_priv;
+	int status;
 
 	dprintk("%s\n", __func__);
 
+	status = tda1004x_read_byte(state, TDA1004X_STATUS_CD);
+	if (status == -1)
+		return -EIO;
+
+	/* Only update the properties cache if device is locked */
+	if (!(status & 8))
+		return 0;
+
 	// inversion status
 	fe_params->inversion = INVERSION_OFF;
 	if (tda1004x_read_byte(state, TDA1004X_CONFC1) & 0x20)
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/media/pci/saa7134/saa7134-alsa.c linux-libre-3.18.27-gnu/drivers/media/pci/saa7134/saa7134-alsa.c
--- linux-libre-3.18.26-gnu/drivers/media/pci/saa7134/saa7134-alsa.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/media/pci/saa7134/saa7134-alsa.c	2016-02-15 15:47:06.000000000 -0500
@@ -1220,6 +1220,8 @@ static int alsa_device_init(struct saa71
 
 static int alsa_device_exit(struct saa7134_dev *dev)
 {
+	if (!snd_saa7134_cards[dev->nr])
+		return 1;
 
 	snd_card_free(snd_saa7134_cards[dev->nr]);
 	snd_saa7134_cards[dev->nr] = NULL;
@@ -1269,7 +1271,8 @@ static void saa7134_alsa_exit(void)
 	int idx;
 
 	for (idx = 0; idx < SNDRV_CARDS; idx++) {
-		snd_card_free(snd_saa7134_cards[idx]);
+		if (snd_saa7134_cards[idx])
+			snd_card_free(snd_saa7134_cards[idx]);
 	}
 
 	saa7134_dmasound_init = NULL;
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/media/usb/gspca/ov534.c linux-libre-3.18.27-gnu/drivers/media/usb/gspca/ov534.c
--- linux-libre-3.18.26-gnu/drivers/media/usb/gspca/ov534.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/media/usb/gspca/ov534.c	2016-02-15 15:47:06.000000000 -0500
@@ -1490,8 +1490,13 @@ static void sd_set_streamparm(struct gsp
 	struct v4l2_fract *tpf = &cp->timeperframe;
 	struct sd *sd = (struct sd *) gspca_dev;
 
-	/* Set requested framerate */
-	sd->frame_rate = tpf->denominator / tpf->numerator;
+	if (tpf->numerator == 0 || tpf->denominator == 0)
+		/* Set default framerate */
+		sd->frame_rate = 30;
+	else
+		/* Set requested framerate */
+		sd->frame_rate = tpf->denominator / tpf->numerator;
+
 	if (gspca_dev->streaming)
 		set_frame_rate(gspca_dev);
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/media/usb/gspca/topro.c linux-libre-3.18.27-gnu/drivers/media/usb/gspca/topro.c
--- linux-libre-3.18.26-gnu/drivers/media/usb/gspca/topro.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/media/usb/gspca/topro.c	2016-02-15 15:47:06.000000000 -0500
@@ -4800,7 +4800,11 @@ static void sd_set_streamparm(struct gsp
 	struct v4l2_fract *tpf = &cp->timeperframe;
 	int fr, i;
 
-	sd->framerate = tpf->denominator / tpf->numerator;
+	if (tpf->numerator == 0 || tpf->denominator == 0)
+		sd->framerate = 30;
+	else
+		sd->framerate = tpf->denominator / tpf->numerator;
+
 	if (gspca_dev->streaming)
 		setframerate(gspca_dev, v4l2_ctrl_g_ctrl(gspca_dev->exposure));
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/media/v4l2-core/videobuf2-core.c linux-libre-3.18.27-gnu/drivers/media/v4l2-core/videobuf2-core.c
--- linux-libre-3.18.26-gnu/drivers/media/v4l2-core/videobuf2-core.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/media/v4l2-core/videobuf2-core.c	2016-02-15 15:47:06.000000000 -0500
@@ -2618,10 +2618,10 @@ unsigned int vb2_poll(struct vb2_queue *
 		return res | POLLERR;
 
 	/*
-	 * For output streams you can write as long as there are fewer buffers
-	 * queued than there are buffers available.
+	 * For output streams you can call write() as long as there are fewer
+	 * buffers queued than there are buffers available.
 	 */
-	if (V4L2_TYPE_IS_OUTPUT(q->type) && q->queued_count < q->num_buffers)
+	if (V4L2_TYPE_IS_OUTPUT(q->type) && q->fileio && q->queued_count < q->num_buffers)
 		return res | POLLOUT | POLLWRNORM;
 
 	if (list_empty(&q->done_list))
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/mmc/core/core.c linux-libre-3.18.27-gnu/drivers/mmc/core/core.c
--- linux-libre-3.18.26-gnu/drivers/mmc/core/core.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/mmc/core/core.c	2016-02-15 15:47:06.000000000 -0500
@@ -1068,6 +1068,30 @@ void mmc_set_ungated(struct mmc_host *ho
 }
 #endif
 
+int mmc_execute_tuning(struct mmc_card *card)
+{
+	struct mmc_host *host = card->host;
+	u32 opcode;
+	int err;
+
+	if (!host->ops->execute_tuning)
+		return 0;
+
+	if (mmc_card_mmc(card))
+		opcode = MMC_SEND_TUNING_BLOCK_HS200;
+	else
+		opcode = MMC_SEND_TUNING_BLOCK;
+
+	mmc_host_clk_hold(host);
+	err = host->ops->execute_tuning(host, opcode);
+	mmc_host_clk_release(host);
+
+	if (err)
+		pr_err("%s: tuning execution failed\n", mmc_hostname(host));
+
+	return err;
+}
+
 /*
  * Change the bus mode (open drain/push-pull) of a host.
  */
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/mmc/core/core.h linux-libre-3.18.27-gnu/drivers/mmc/core/core.h
--- linux-libre-3.18.26-gnu/drivers/mmc/core/core.h	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/mmc/core/core.h	2016-02-15 15:47:06.000000000 -0500
@@ -81,5 +81,8 @@ void mmc_add_card_debugfs(struct mmc_car
 void mmc_remove_card_debugfs(struct mmc_card *card);
 
 void mmc_init_context_info(struct mmc_host *host);
+
+int mmc_execute_tuning(struct mmc_card *card);
+
 #endif
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/mmc/core/mmc.c linux-libre-3.18.27-gnu/drivers/mmc/core/mmc.c
--- linux-libre-3.18.26-gnu/drivers/mmc/core/mmc.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/mmc/core/mmc.c	2016-02-15 15:47:06.000000000 -0500
@@ -998,7 +998,7 @@ static int mmc_select_hs_ddr(struct mmc_
 			ext_csd_bits,
 			card->ext_csd.generic_cmd6_time);
 	if (err) {
-		pr_warn("%s: switch to bus width %d ddr failed\n",
+		pr_err("%s: switch to bus width %d ddr failed\n",
 			mmc_hostname(host), 1 << bus_width);
 		return err;
 	}
@@ -1069,7 +1069,7 @@ static int mmc_select_hs400(struct mmc_c
 			   card->ext_csd.generic_cmd6_time,
 			   true, true, true);
 	if (err) {
-		pr_warn("%s: switch to high-speed from hs200 failed, err:%d\n",
+		pr_err("%s: switch to high-speed from hs200 failed, err:%d\n",
 			mmc_hostname(host), err);
 		return err;
 	}
@@ -1079,7 +1079,7 @@ static int mmc_select_hs400(struct mmc_c
 			 EXT_CSD_DDR_BUS_WIDTH_8,
 			 card->ext_csd.generic_cmd6_time);
 	if (err) {
-		pr_warn("%s: switch to bus width for hs400 failed, err:%d\n",
+		pr_err("%s: switch to bus width for hs400 failed, err:%d\n",
 			mmc_hostname(host), err);
 		return err;
 	}
@@ -1089,7 +1089,7 @@ static int mmc_select_hs400(struct mmc_c
 			   card->ext_csd.generic_cmd6_time,
 			   true, true, true);
 	if (err) {
-		pr_warn("%s: switch to hs400 failed, err:%d\n",
+		pr_err("%s: switch to hs400 failed, err:%d\n",
 			 mmc_hostname(host), err);
 		return err;
 	}
@@ -1214,7 +1214,6 @@ EXPORT_SYMBOL(tuning_blk_pattern_8bit);
 static int mmc_hs200_tuning(struct mmc_card *card)
 {
 	struct mmc_host *host = card->host;
-	int err = 0;
 
 	/*
 	 * Timing should be adjusted to the HS400 target
@@ -1225,18 +1224,7 @@ static int mmc_hs200_tuning(struct mmc_c
 		if (host->ops->prepare_hs400_tuning)
 			host->ops->prepare_hs400_tuning(host, &host->ios);
 
-	if (host->ops->execute_tuning) {
-		mmc_host_clk_hold(host);
-		err = host->ops->execute_tuning(host,
-				MMC_SEND_TUNING_BLOCK_HS200);
-		mmc_host_clk_release(host);
-
-		if (err)
-			pr_warn("%s: tuning execution failed\n",
-				mmc_hostname(host));
-	}
-
-	return err;
+	return mmc_execute_tuning(card);
 }
 
 /*
@@ -1458,18 +1446,18 @@ static int mmc_init_card(struct mmc_host
 	if (mmc_card_hs200(card)) {
 		err = mmc_hs200_tuning(card);
 		if (err)
-			goto err;
+			goto free_card;
 
 		err = mmc_select_hs400(card);
 		if (err)
-			goto err;
+			goto free_card;
 	} else if (mmc_card_hs(card)) {
 		/* Select the desired bus width optionally */
 		err = mmc_select_bus_width(card);
 		if (!IS_ERR_VALUE(err)) {
 			err = mmc_select_hs_ddr(card);
 			if (err)
-				goto err;
+				goto free_card;
 		}
 	}
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/mmc/core/sd.c linux-libre-3.18.27-gnu/drivers/mmc/core/sd.c
--- linux-libre-3.18.26-gnu/drivers/mmc/core/sd.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/mmc/core/sd.c	2016-02-15 15:47:06.000000000 -0500
@@ -660,13 +660,24 @@ static int mmc_sd_init_uhs_card(struct m
 	 * SPI mode doesn't define CMD19 and tuning is only valid for SDR50 and
 	 * SDR104 mode SD-cards. Note that tuning is mandatory for SDR104.
 	 */
-	if (!mmc_host_is_spi(card->host) && card->host->ops->execute_tuning &&
-			(card->sd_bus_speed == UHS_SDR50_BUS_SPEED ||
-			 card->sd_bus_speed == UHS_SDR104_BUS_SPEED)) {
-		mmc_host_clk_hold(card->host);
-		err = card->host->ops->execute_tuning(card->host,
-						      MMC_SEND_TUNING_BLOCK);
-		mmc_host_clk_release(card->host);
+	if (!mmc_host_is_spi(card->host) &&
+		(card->host->ios.timing == MMC_TIMING_UHS_SDR50 ||
+		 card->host->ios.timing == MMC_TIMING_UHS_DDR50 ||
+		 card->host->ios.timing == MMC_TIMING_UHS_SDR104)) {
+		err = mmc_execute_tuning(card);
+
+		/*
+		 * As SD Specifications Part1 Physical Layer Specification
+		 * Version 3.01 says, CMD19 tuning is available for unlocked
+		 * cards in transfer state of 1.8V signaling mode. The small
+		 * difference between v3.00 and 3.01 spec means that CMD19
+		 * tuning is also available for DDR50 mode.
+		 */
+		if (err && card->host->ios.timing == MMC_TIMING_UHS_DDR50) {
+			pr_warn("%s: ddr50 tuning failed\n",
+				mmc_hostname(card->host));
+			err = 0;
+		}
 	}
 
 out:
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/mmc/core/sdio.c linux-libre-3.18.27-gnu/drivers/mmc/core/sdio.c
--- linux-libre-3.18.26-gnu/drivers/mmc/core/sdio.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/mmc/core/sdio.c	2016-02-15 15:47:06.000000000 -0500
@@ -567,17 +567,11 @@ static int mmc_sdio_init_uhs_card(struct
 	 * SPI mode doesn't define CMD19 and tuning is only valid for SDR50 and
 	 * SDR104 mode SD-cards. Note that tuning is mandatory for SDR104.
 	 */
-	if (!mmc_host_is_spi(card->host) && card->host->ops->execute_tuning &&
-			((card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR50) ||
-			 (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR104))) {
-		mmc_host_clk_hold(card->host);
-		err = card->host->ops->execute_tuning(card->host,
-						      MMC_SEND_TUNING_BLOCK);
-		mmc_host_clk_release(card->host);
-	}
-
+	if (!mmc_host_is_spi(card->host) &&
+	    ((card->host->ios.timing == MMC_TIMING_UHS_SDR50) ||
+	      (card->host->ios.timing == MMC_TIMING_UHS_SDR104)))
+		err = mmc_execute_tuning(card);
 out:
-
 	return err;
 }
 
@@ -669,7 +663,7 @@ try_again:
 	 */
 	if (!powered_resume && (rocr & ocr & R4_18V_PRESENT)) {
 		err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180,
-					ocr);
+					ocr_card);
 		if (err == -EAGAIN) {
 			sdio_reset(host);
 			mmc_go_idle(host);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/mmc/host/mmci.c linux-libre-3.18.27-gnu/drivers/mmc/host/mmci.c
--- linux-libre-3.18.26-gnu/drivers/mmc/host/mmci.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/mmc/host/mmci.c	2016-02-15 15:47:06.000000000 -0500
@@ -1881,7 +1881,7 @@ static struct amba_id mmci_ids[] = {
 	{
 		.id     = 0x00280180,
 		.mask   = 0x00ffffff,
-		.data	= &variant_u300,
+		.data	= &variant_nomadik,
 	},
 	{
 		.id     = 0x00480180,
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/mmc/host/sdhci.c linux-libre-3.18.27-gnu/drivers/mmc/host/sdhci.c
--- linux-libre-3.18.26-gnu/drivers/mmc/host/sdhci.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/mmc/host/sdhci.c	2016-02-15 15:47:06.000000000 -0500
@@ -2681,7 +2681,7 @@ static int sdhci_runtime_pm_put(struct s
 
 static void sdhci_runtime_pm_bus_on(struct sdhci_host *host)
 {
-	if (host->runtime_suspended || host->bus_on)
+	if (host->bus_on)
 		return;
 	host->bus_on = true;
 	pm_runtime_get_noresume(host->mmc->parent);
@@ -2689,7 +2689,7 @@ static void sdhci_runtime_pm_bus_on(stru
 
 static void sdhci_runtime_pm_bus_off(struct sdhci_host *host)
 {
-	if (host->runtime_suspended || !host->bus_on)
+	if (!host->bus_on)
 		return;
 	host->bus_on = false;
 	pm_runtime_put_noidle(host->mmc->parent);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/net/bonding/bond_main.c linux-libre-3.18.27-gnu/drivers/net/bonding/bond_main.c
--- linux-libre-3.18.26-gnu/drivers/net/bonding/bond_main.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/net/bonding/bond_main.c	2016-02-15 15:47:06.000000000 -0500
@@ -1154,7 +1154,6 @@ static int bond_master_upper_dev_link(st
 	err = netdev_master_upper_dev_link_private(slave_dev, bond_dev, slave);
 	if (err)
 		return err;
-	slave_dev->flags |= IFF_SLAVE;
 	rtmsg_ifinfo(RTM_NEWLINK, slave_dev, IFF_SLAVE, GFP_KERNEL);
 	return 0;
 }
@@ -1362,6 +1361,9 @@ int bond_enslave(struct net_device *bond
 		}
 	}
 
+	/* set slave flag before open to prevent IPv6 addrconf */
+	slave_dev->flags |= IFF_SLAVE;
+
 	/* open the slave since the application closed it */
 	res = dev_open(slave_dev);
 	if (res) {
@@ -1615,6 +1617,7 @@ err_close:
 	dev_close(slave_dev);
 
 err_restore_mac:
+	slave_dev->flags &= ~IFF_SLAVE;
 	if (!bond->params.fail_over_mac ||
 	    BOND_MODE(bond) != BOND_MODE_ACTIVEBACKUP) {
 		/* XXX TODO - fom follow mode needs to change master's
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/net/ieee802154/at86rf230.c linux-libre-3.18.27-gnu/drivers/net/ieee802154/at86rf230.c
--- linux-libre-3.18.26-gnu/drivers/net/ieee802154/at86rf230.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/net/ieee802154/at86rf230.c	2016-02-15 15:47:06.000000000 -0500
@@ -1098,7 +1098,7 @@ at86rf230_set_hw_addr_filt(struct ieee80
 {
 	struct at86rf230_local *lp = dev->priv;
 
-	if (changed & IEEE802515_AFILT_SADDR_CHANGED) {
+	if (changed & IEEE802154_AFILT_SADDR_CHANGED) {
 		u16 addr = le16_to_cpu(filt->short_addr);
 
 		dev_vdbg(&lp->spi->dev,
@@ -1107,7 +1107,7 @@ at86rf230_set_hw_addr_filt(struct ieee80
 		__at86rf230_write(lp, RG_SHORT_ADDR_1, addr >> 8);
 	}
 
-	if (changed & IEEE802515_AFILT_PANID_CHANGED) {
+	if (changed & IEEE802154_AFILT_PANID_CHANGED) {
 		u16 pan = le16_to_cpu(filt->pan_id);
 
 		dev_vdbg(&lp->spi->dev,
@@ -1116,7 +1116,7 @@ at86rf230_set_hw_addr_filt(struct ieee80
 		__at86rf230_write(lp, RG_PAN_ID_1, pan >> 8);
 	}
 
-	if (changed & IEEE802515_AFILT_IEEEADDR_CHANGED) {
+	if (changed & IEEE802154_AFILT_IEEEADDR_CHANGED) {
 		u8 i, addr[8];
 
 		memcpy(addr, &filt->ieee_addr, 8);
@@ -1126,7 +1126,7 @@ at86rf230_set_hw_addr_filt(struct ieee80
 			__at86rf230_write(lp, RG_IEEE_ADDR_0 + i, addr[i]);
 	}
 
-	if (changed & IEEE802515_AFILT_PANC_CHANGED) {
+	if (changed & IEEE802154_AFILT_PANC_CHANGED) {
 		dev_vdbg(&lp->spi->dev,
 			"at86rf230_set_hw_addr_filt called for panc change\n");
 		if (filt->pan_coord)
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/net/ieee802154/cc2520.c linux-libre-3.18.27-gnu/drivers/net/ieee802154/cc2520.c
--- linux-libre-3.18.26-gnu/drivers/net/ieee802154/cc2520.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/net/ieee802154/cc2520.c	2016-02-15 15:47:06.000000000 -0500
@@ -593,7 +593,7 @@ cc2520_filter(struct ieee802154_dev *dev
 {
 	struct cc2520_private *priv = dev->priv;
 
-	if (changed & IEEE802515_AFILT_PANID_CHANGED) {
+	if (changed & IEEE802154_AFILT_PANID_CHANGED) {
 		u16 panid = le16_to_cpu(filt->pan_id);
 
 		dev_vdbg(&priv->spi->dev,
@@ -602,7 +602,7 @@ cc2520_filter(struct ieee802154_dev *dev
 				 sizeof(panid), (u8 *)&panid);
 	}
 
-	if (changed & IEEE802515_AFILT_IEEEADDR_CHANGED) {
+	if (changed & IEEE802154_AFILT_IEEEADDR_CHANGED) {
 		dev_vdbg(&priv->spi->dev,
 			 "cc2520_filter called for IEEE addr\n");
 		cc2520_write_ram(priv, CC2520RAM_IEEEADDR,
@@ -610,7 +610,7 @@ cc2520_filter(struct ieee802154_dev *dev
 				 (u8 *)&filt->ieee_addr);
 	}
 
-	if (changed & IEEE802515_AFILT_SADDR_CHANGED) {
+	if (changed & IEEE802154_AFILT_SADDR_CHANGED) {
 		u16 addr = le16_to_cpu(filt->short_addr);
 
 		dev_vdbg(&priv->spi->dev,
@@ -619,7 +619,7 @@ cc2520_filter(struct ieee802154_dev *dev
 				 sizeof(addr), (u8 *)&addr);
 	}
 
-	if (changed & IEEE802515_AFILT_PANC_CHANGED) {
+	if (changed & IEEE802154_AFILT_PANC_CHANGED) {
 		dev_vdbg(&priv->spi->dev,
 			 "cc2520_filter called for panc change\n");
 		if (filt->pan_coord)
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/net/ieee802154/mrf24j40.c linux-libre-3.18.27-gnu/drivers/net/ieee802154/mrf24j40.c
--- linux-libre-3.18.26-gnu/drivers/net/ieee802154/mrf24j40.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/net/ieee802154/mrf24j40.c	2016-02-15 15:47:06.000000000 -0500
@@ -461,7 +461,7 @@ static int mrf24j40_filter(struct ieee80
 
 	dev_dbg(printdev(devrec), "filter\n");
 
-	if (changed & IEEE802515_AFILT_SADDR_CHANGED) {
+	if (changed & IEEE802154_AFILT_SADDR_CHANGED) {
 		/* Short Addr */
 		u8 addrh, addrl;
 
@@ -474,7 +474,7 @@ static int mrf24j40_filter(struct ieee80
 			"Set short addr to %04hx\n", filt->short_addr);
 	}
 
-	if (changed & IEEE802515_AFILT_IEEEADDR_CHANGED) {
+	if (changed & IEEE802154_AFILT_IEEEADDR_CHANGED) {
 		/* Device Address */
 		u8 i, addr[8];
 
@@ -490,7 +490,7 @@ static int mrf24j40_filter(struct ieee80
 #endif
 	}
 
-	if (changed & IEEE802515_AFILT_PANID_CHANGED) {
+	if (changed & IEEE802154_AFILT_PANID_CHANGED) {
 		/* PAN ID */
 		u8 panidl, panidh;
 
@@ -502,7 +502,7 @@ static int mrf24j40_filter(struct ieee80
 		dev_dbg(printdev(devrec), "Set PANID to %04hx\n", filt->pan_id);
 	}
 
-	if (changed & IEEE802515_AFILT_PANC_CHANGED) {
+	if (changed & IEEE802154_AFILT_PANC_CHANGED) {
 		/* Pan Coordinator */
 		u8 val;
 		int ret;
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/net/ppp/ppp_generic.c linux-libre-3.18.27-gnu/drivers/net/ppp/ppp_generic.c
--- linux-libre-3.18.26-gnu/drivers/net/ppp/ppp_generic.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/net/ppp/ppp_generic.c	2016-02-15 15:47:06.000000000 -0500
@@ -713,10 +713,8 @@ static long ppp_ioctl(struct file *file,
 			val &= 0xffff;
 		}
 		vj = slhc_init(val2+1, val+1);
-		if (!vj) {
-			netdev_err(ppp->dev,
-				   "PPP: no memory (VJ compressor)\n");
-			err = -ENOMEM;
+		if (IS_ERR(vj)) {
+			err = PTR_ERR(vj);
 			break;
 		}
 		ppp_lock(ppp);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/net/slip/slhc.c linux-libre-3.18.27-gnu/drivers/net/slip/slhc.c
--- linux-libre-3.18.26-gnu/drivers/net/slip/slhc.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/net/slip/slhc.c	2016-02-15 15:47:06.000000000 -0500
@@ -84,8 +84,9 @@ static long decode(unsigned char **cpp);
 static unsigned char * put16(unsigned char *cp, unsigned short x);
 static unsigned short pull16(unsigned char **cpp);
 
-/* Initialize compression data structure
+/* Allocate compression data structure
  *	slots must be in range 0 to 255 (zero meaning no compression)
+ * Returns pointer to structure or ERR_PTR() on error.
  */
 struct slcompress *
 slhc_init(int rslots, int tslots)
@@ -94,11 +95,14 @@ slhc_init(int rslots, int tslots)
 	register struct cstate *ts;
 	struct slcompress *comp;
 
+	if (rslots < 0 || rslots > 255 || tslots < 0 || tslots > 255)
+		return ERR_PTR(-EINVAL);
+
 	comp = kzalloc(sizeof(struct slcompress), GFP_KERNEL);
 	if (! comp)
 		goto out_fail;
 
-	if ( rslots > 0  &&  rslots < 256 ) {
+	if (rslots > 0) {
 		size_t rsize = rslots * sizeof(struct cstate);
 		comp->rstate = kzalloc(rsize, GFP_KERNEL);
 		if (! comp->rstate)
@@ -106,7 +110,7 @@ slhc_init(int rslots, int tslots)
 		comp->rslot_limit = rslots - 1;
 	}
 
-	if ( tslots > 0  &&  tslots < 256 ) {
+	if (tslots > 0) {
 		size_t tsize = tslots * sizeof(struct cstate);
 		comp->tstate = kzalloc(tsize, GFP_KERNEL);
 		if (! comp->tstate)
@@ -141,7 +145,7 @@ out_free2:
 out_free:
 	kfree(comp);
 out_fail:
-	return NULL;
+	return ERR_PTR(-ENOMEM);
 }
 
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/net/slip/slip.c linux-libre-3.18.27-gnu/drivers/net/slip/slip.c
--- linux-libre-3.18.26-gnu/drivers/net/slip/slip.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/net/slip/slip.c	2016-02-15 15:47:06.000000000 -0500
@@ -164,7 +164,7 @@ static int sl_alloc_bufs(struct slip *sl
 	if (cbuff == NULL)
 		goto err_exit;
 	slcomp = slhc_init(16, 16);
-	if (slcomp == NULL)
+	if (IS_ERR(slcomp))
 		goto err_exit;
 #endif
 	spin_lock_bh(&sl->lock);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/net/team/team.c linux-libre-3.18.27-gnu/drivers/net/team/team.c
--- linux-libre-3.18.26-gnu/drivers/net/team/team.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/net/team/team.c	2016-02-15 15:47:06.000000000 -0500
@@ -1848,10 +1848,10 @@ static int team_vlan_rx_kill_vid(struct
 	struct team *team = netdev_priv(dev);
 	struct team_port *port;
 
-	rcu_read_lock();
-	list_for_each_entry_rcu(port, &team->port_list, list)
+	mutex_lock(&team->lock);
+	list_for_each_entry(port, &team->port_list, list)
 		vlan_vid_del(port->dev, proto, vid);
-	rcu_read_unlock();
+	mutex_unlock(&team->lock);
 
 	return 0;
 }
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/net/veth.c linux-libre-3.18.27-gnu/drivers/net/veth.c
--- linux-libre-3.18.26-gnu/drivers/net/veth.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/net/veth.c	2016-02-15 15:47:06.000000000 -0500
@@ -117,12 +117,6 @@ static netdev_tx_t veth_xmit(struct sk_b
 		kfree_skb(skb);
 		goto drop;
 	}
-	/* don't change ip_summed == CHECKSUM_PARTIAL, as that
-	 * will cause bad checksum on forwarded packets
-	 */
-	if (skb->ip_summed == CHECKSUM_NONE &&
-	    rcv->features & NETIF_F_RXCSUM)
-		skb->ip_summed = CHECKSUM_UNNECESSARY;
 
 	if (likely(dev_forward_skb(rcv, skb) == NET_RX_SUCCESS)) {
 		struct pcpu_vstats *stats = this_cpu_ptr(dev->vstats);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/net/vxlan.c linux-libre-3.18.27-gnu/drivers/net/vxlan.c
--- linux-libre-3.18.26-gnu/drivers/net/vxlan.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/net/vxlan.c	2016-02-15 15:47:06.000000000 -0500
@@ -2433,7 +2433,7 @@ static int vxlan_newlink(struct net *net
 			 struct nlattr *tb[], struct nlattr *data[])
 {
 	struct vxlan_net *vn = net_generic(net, vxlan_net_id);
-	struct vxlan_dev *vxlan = netdev_priv(dev);
+	struct vxlan_dev *vxlan = netdev_priv(dev), *tmp;
 	struct vxlan_rdst *dst = &vxlan->default_dst;
 	__u32 vni;
 	int err;
@@ -2554,9 +2554,13 @@ static int vxlan_newlink(struct net *net
 	    nla_get_u8(data[IFLA_VXLAN_UDP_ZERO_CSUM6_RX]))
 		vxlan->flags |= VXLAN_F_UDP_ZERO_CSUM6_RX;
 
-	if (vxlan_find_vni(net, vni, use_ipv6 ? AF_INET6 : AF_INET,
-			   vxlan->dst_port)) {
-		pr_info("duplicate VNI %u\n", vni);
+	list_for_each_entry(tmp, &vn->vxlan_list, next) {
+		if (tmp->default_dst.remote_vni == vni &&
+		    (tmp->default_dst.remote_ip.sa.sa_family == AF_INET6 ||
+		     tmp->saddr.sa.sa_family == AF_INET6) == use_ipv6 &&
+		    tmp->dst_port == vxlan->dst_port &&
+		    (tmp->flags & VXLAN_F_RCV_FLAGS) ==
+		    (vxlan->flags & VXLAN_F_RCV_FLAGS))
 		return -EEXIST;
 	}
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/net/wireless/iwlwifi/pcie/drv.c linux-libre-3.18.27-gnu/drivers/net/wireless/iwlwifi/pcie/drv.c
--- linux-libre-3.18.26-gnu/drivers/net/wireless/iwlwifi/pcie/drv.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/net/wireless/iwlwifi/pcie/drv.c	2016-02-15 15:47:06.000000000 -0500
@@ -380,6 +380,7 @@ static const struct pci_device_id iwl_hw
 	{IWL_PCI_DEVICE(0x095B, 0x5310, iwl7265_2ac_cfg)},
 	{IWL_PCI_DEVICE(0x095B, 0x5302, iwl7265_n_cfg)},
 	{IWL_PCI_DEVICE(0x095B, 0x5210, iwl7265_2ac_cfg)},
+	{IWL_PCI_DEVICE(0x095A, 0x5C10, iwl7265_2ac_cfg)},
 	{IWL_PCI_DEVICE(0x095A, 0x5012, iwl7265_2ac_cfg)},
 	{IWL_PCI_DEVICE(0x095A, 0x5412, iwl7265_2ac_cfg)},
 	{IWL_PCI_DEVICE(0x095A, 0x5410, iwl7265_2ac_cfg)},
@@ -397,10 +398,10 @@ static const struct pci_device_id iwl_hw
 	{IWL_PCI_DEVICE(0x095A, 0x900A, iwl7265_2ac_cfg)},
 	{IWL_PCI_DEVICE(0x095A, 0x9110, iwl7265_2ac_cfg)},
 	{IWL_PCI_DEVICE(0x095A, 0x9112, iwl7265_2ac_cfg)},
-	{IWL_PCI_DEVICE(0x095A, 0x9210, iwl7265_2ac_cfg)},
+	{IWL_PCI_DEVICE(0x095B, 0x9210, iwl7265_2ac_cfg)},
 	{IWL_PCI_DEVICE(0x095B, 0x9200, iwl7265_2ac_cfg)},
 	{IWL_PCI_DEVICE(0x095A, 0x9510, iwl7265_2ac_cfg)},
-	{IWL_PCI_DEVICE(0x095A, 0x9310, iwl7265_2ac_cfg)},
+	{IWL_PCI_DEVICE(0x095B, 0x9310, iwl7265_2ac_cfg)},
 	{IWL_PCI_DEVICE(0x095A, 0x9410, iwl7265_2ac_cfg)},
 	{IWL_PCI_DEVICE(0x095A, 0x5020, iwl7265_2n_cfg)},
 	{IWL_PCI_DEVICE(0x095A, 0x502A, iwl7265_2n_cfg)},
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/net/wireless/rtlwifi/pci.c linux-libre-3.18.27-gnu/drivers/net/wireless/rtlwifi/pci.c
--- linux-libre-3.18.26-gnu/drivers/net/wireless/rtlwifi/pci.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/net/wireless/rtlwifi/pci.c	2016-02-15 15:47:06.000000000 -0500
@@ -801,7 +801,9 @@ static void _rtl_pci_rx_interrupt(struct
 								      hw_queue);
 			if (rx_remained_cnt == 0)
 				return;
-
+			buffer_desc = &rtlpci->rx_ring[rxring_idx].buffer_desc[
+				rtlpci->rx_ring[rxring_idx].idx];
+			pdesc = (struct rtl_rx_desc *)skb->data;
 		} else {	/* rx descriptor */
 			pdesc = &rtlpci->rx_ring[rxring_idx].desc[
 				rtlpci->rx_ring[rxring_idx].idx];
@@ -824,13 +826,6 @@ static void _rtl_pci_rx_interrupt(struct
 		new_skb = dev_alloc_skb(rtlpci->rxbuffersize);
 		if (unlikely(!new_skb))
 			goto no_new;
-		if (rtlpriv->use_new_trx_flow) {
-			buffer_desc =
-			  &rtlpci->rx_ring[rxring_idx].buffer_desc
-				[rtlpci->rx_ring[rxring_idx].idx];
-			/*means rx wifi info*/
-			pdesc = (struct rtl_rx_desc *)skb->data;
-		}
 		memset(&rx_status , 0 , sizeof(rx_status));
 		rtlpriv->cfg->ops->query_rx_desc(hw, &stats,
 						 &rx_status, (u8 *)pdesc, skb);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/net/wireless/rtlwifi/rtl8188ee/sw.c linux-libre-3.18.27-gnu/drivers/net/wireless/rtlwifi/rtl8188ee/sw.c
--- linux-libre-3.18.26-gnu/drivers/net/wireless/rtlwifi/rtl8188ee/sw.c	2016-02-16 20:05:25.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/net/wireless/rtlwifi/rtl8188ee/sw.c	2016-02-16 21:25:41.000000000 -0500
@@ -88,8 +88,6 @@ int rtl88e_init_sw_vars(struct ieee80211
 	u8 tid;
 
 	rtl8188ee_bt_reg_init(hw);
-	rtlpci->msi_support = rtlpriv->cfg->mod_params->msi_support;
-
 	rtlpriv->dm.dm_initialgain_enable = 1;
 	rtlpriv->dm.dm_flag = 0;
 	rtlpriv->dm.disable_framebursting = 0;
@@ -138,6 +136,11 @@ int rtl88e_init_sw_vars(struct ieee80211
 	rtlpriv->psc.inactiveps = rtlpriv->cfg->mod_params->inactiveps;
 	rtlpriv->psc.swctrl_lps = rtlpriv->cfg->mod_params->swctrl_lps;
 	rtlpriv->psc.fwctrl_lps = rtlpriv->cfg->mod_params->fwctrl_lps;
+	rtlpci->msi_support = rtlpriv->cfg->mod_params->msi_support;
+	rtlpriv->cfg->mod_params->sw_crypto =
+		rtlpriv->cfg->mod_params->sw_crypto;
+	rtlpriv->cfg->mod_params->disable_watchdog =
+		rtlpriv->cfg->mod_params->disable_watchdog;
 	if (rtlpriv->cfg->mod_params->disable_watchdog)
 		pr_info("watchdog disabled\n");
 	if (!rtlpriv->psc.inactiveps)
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/net/wireless/rtlwifi/rtl8192ce/sw.c linux-libre-3.18.27-gnu/drivers/net/wireless/rtlwifi/rtl8192ce/sw.c
--- linux-libre-3.18.26-gnu/drivers/net/wireless/rtlwifi/rtl8192ce/sw.c	2016-02-16 20:05:32.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/net/wireless/rtlwifi/rtl8192ce/sw.c	2016-02-16 21:25:47.000000000 -0500
@@ -139,6 +139,8 @@ int rtl92c_init_sw_vars(struct ieee80211
 	rtlpriv->psc.inactiveps = rtlpriv->cfg->mod_params->inactiveps;
 	rtlpriv->psc.swctrl_lps = rtlpriv->cfg->mod_params->swctrl_lps;
 	rtlpriv->psc.fwctrl_lps = rtlpriv->cfg->mod_params->fwctrl_lps;
+	rtlpriv->cfg->mod_params->sw_crypto =
+		rtlpriv->cfg->mod_params->sw_crypto;
 	if (!rtlpriv->psc.inactiveps)
 		pr_info("rtl8192ce: Power Save off (module option)\n");
 	if (!rtlpriv->psc.fwctrl_lps)
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/net/wireless/rtlwifi/rtl8192cu/sw.c linux-libre-3.18.27-gnu/drivers/net/wireless/rtlwifi/rtl8192cu/sw.c
--- linux-libre-3.18.26-gnu/drivers/net/wireless/rtlwifi/rtl8192cu/sw.c	2016-02-16 20:05:34.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/net/wireless/rtlwifi/rtl8192cu/sw.c	2016-02-16 21:25:50.000000000 -0500
@@ -62,6 +62,8 @@ static int rtl92cu_init_sw_vars(struct i
 	rtlpriv->dm.disable_framebursting = false;
 	rtlpriv->dm.thermalvalue = 0;
 	rtlpriv->dbg.global_debuglevel = rtlpriv->cfg->mod_params->debug;
+	rtlpriv->cfg->mod_params->sw_crypto =
+		rtlpriv->cfg->mod_params->sw_crypto;
 
 	/* for firmware buf */
 	rtlpriv->rtlhal.pfirmware = vzalloc(0x4000);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/net/wireless/rtlwifi/rtl8192de/sw.c linux-libre-3.18.27-gnu/drivers/net/wireless/rtlwifi/rtl8192de/sw.c
--- linux-libre-3.18.26-gnu/drivers/net/wireless/rtlwifi/rtl8192de/sw.c	2016-02-16 20:05:36.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/net/wireless/rtlwifi/rtl8192de/sw.c	2016-02-16 21:25:52.000000000 -0500
@@ -376,8 +376,8 @@ module_param_named(swlps, rtl92de_mod_pa
 module_param_named(fwlps, rtl92de_mod_params.fwctrl_lps, bool, 0444);
 MODULE_PARM_DESC(swenc, "Set to 1 for software crypto (default 0)\n");
 MODULE_PARM_DESC(ips, "Set to 0 to not use link power save (default 1)\n");
-MODULE_PARM_DESC(swlps, "Set to 1 to use SW control power save (default 0)\n");
-MODULE_PARM_DESC(fwlps, "Set to 1 to use FW control power save (default 1)\n");
+MODULE_PARM_DESC(swlps, "Set to 1 to use SW control power save (default 1)\n");
+MODULE_PARM_DESC(fwlps, "Set to 1 to use FW control power save (default 0)\n");
 MODULE_PARM_DESC(debug, "Set debug level (0-5) (default 0)");
 
 static SIMPLE_DEV_PM_OPS(rtlwifi_pm_ops, rtl_pci_suspend, rtl_pci_resume);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/net/wireless/rtlwifi/rtl8192se/sw.c linux-libre-3.18.27-gnu/drivers/net/wireless/rtlwifi/rtl8192se/sw.c
--- linux-libre-3.18.26-gnu/drivers/net/wireless/rtlwifi/rtl8192se/sw.c	2016-02-16 20:05:39.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/net/wireless/rtlwifi/rtl8192se/sw.c	2016-02-16 21:25:54.000000000 -0500
@@ -187,6 +187,8 @@ static int rtl92s_init_sw_vars(struct ie
 	rtlpriv->psc.inactiveps = rtlpriv->cfg->mod_params->inactiveps;
 	rtlpriv->psc.swctrl_lps = rtlpriv->cfg->mod_params->swctrl_lps;
 	rtlpriv->psc.fwctrl_lps = rtlpriv->cfg->mod_params->fwctrl_lps;
+	rtlpriv->cfg->mod_params->sw_crypto =
+		rtlpriv->cfg->mod_params->sw_crypto;
 	if (!rtlpriv->psc.inactiveps)
 		pr_info("Power Save off (module option)\n");
 	if (!rtlpriv->psc.fwctrl_lps)
@@ -425,8 +427,8 @@ module_param_named(swlps, rtl92se_mod_pa
 module_param_named(fwlps, rtl92se_mod_params.fwctrl_lps, bool, 0444);
 MODULE_PARM_DESC(swenc, "Set to 1 for software crypto (default 0)\n");
 MODULE_PARM_DESC(ips, "Set to 0 to not use link power save (default 1)\n");
-MODULE_PARM_DESC(swlps, "Set to 1 to use SW control power save (default 0)\n");
-MODULE_PARM_DESC(fwlps, "Set to 1 to use FW control power save (default 1)\n");
+MODULE_PARM_DESC(swlps, "Set to 1 to use SW control power save (default 1)\n");
+MODULE_PARM_DESC(fwlps, "Set to 1 to use FW control power save (default 0)\n");
 MODULE_PARM_DESC(debug, "Set debug level (0-5) (default 0)");
 
 static SIMPLE_DEV_PM_OPS(rtlwifi_pm_ops, rtl_pci_suspend, rtl_pci_resume);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/net/wireless/rtlwifi/usb.c linux-libre-3.18.27-gnu/drivers/net/wireless/rtlwifi/usb.c
--- linux-libre-3.18.26-gnu/drivers/net/wireless/rtlwifi/usb.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/net/wireless/rtlwifi/usb.c	2016-02-15 15:47:06.000000000 -0500
@@ -531,6 +531,8 @@ static void _rtl_usb_rx_process_noagg(st
 			ieee80211_rx(hw, skb);
 		else
 			dev_kfree_skb_any(skb);
+	} else {
+		dev_kfree_skb_any(skb);
 	}
 }
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/net/wireless/ti/wlcore/io.h linux-libre-3.18.27-gnu/drivers/net/wireless/ti/wlcore/io.h
--- linux-libre-3.18.26-gnu/drivers/net/wireless/ti/wlcore/io.h	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/net/wireless/ti/wlcore/io.h	2016-02-15 15:47:06.000000000 -0500
@@ -207,19 +207,23 @@ static inline int __must_check wlcore_wr
 
 static inline void wl1271_power_off(struct wl1271 *wl)
 {
-	int ret;
+	int ret = 0;
 
 	if (!test_bit(WL1271_FLAG_GPIO_POWER, &wl->flags))
 		return;
 
-	ret = wl->if_ops->power(wl->dev, false);
+	if (wl->if_ops->power)
+		ret = wl->if_ops->power(wl->dev, false);
 	if (!ret)
 		clear_bit(WL1271_FLAG_GPIO_POWER, &wl->flags);
 }
 
 static inline int wl1271_power_on(struct wl1271 *wl)
 {
-	int ret = wl->if_ops->power(wl->dev, true);
+	int ret = 0;
+
+	if (wl->if_ops->power)
+		ret = wl->if_ops->power(wl->dev, true);
 	if (ret == 0)
 		set_bit(WL1271_FLAG_GPIO_POWER, &wl->flags);
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/net/wireless/ti/wlcore/spi.c linux-libre-3.18.27-gnu/drivers/net/wireless/ti/wlcore/spi.c
--- linux-libre-3.18.26-gnu/drivers/net/wireless/ti/wlcore/spi.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/net/wireless/ti/wlcore/spi.c	2016-02-15 15:47:06.000000000 -0500
@@ -73,7 +73,10 @@
  */
 #define SPI_AGGR_BUFFER_SIZE (4 * PAGE_SIZE)
 
-#define WSPI_MAX_NUM_OF_CHUNKS (SPI_AGGR_BUFFER_SIZE / WSPI_MAX_CHUNK_SIZE)
+/* Maximum number of SPI write chunks */
+#define WSPI_MAX_NUM_OF_CHUNKS \
+	((SPI_AGGR_BUFFER_SIZE / WSPI_MAX_CHUNK_SIZE) + 1)
+
 
 struct wl12xx_spi_glue {
 	struct device *dev;
@@ -268,9 +271,10 @@ static int __must_check wl12xx_spi_raw_w
 					     void *buf, size_t len, bool fixed)
 {
 	struct wl12xx_spi_glue *glue = dev_get_drvdata(child->parent);
-	struct spi_transfer t[2 * (WSPI_MAX_NUM_OF_CHUNKS + 1)];
+	/* SPI write buffers - 2 for each chunk */
+	struct spi_transfer t[2 * WSPI_MAX_NUM_OF_CHUNKS];
 	struct spi_message m;
-	u32 commands[WSPI_MAX_NUM_OF_CHUNKS];
+	u32 commands[WSPI_MAX_NUM_OF_CHUNKS]; /* 1 command per chunk */
 	u32 *cmd;
 	u32 chunk_len;
 	int i;
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/net/xen-netback/netback.c linux-libre-3.18.27-gnu/drivers/net/xen-netback/netback.c
--- linux-libre-3.18.26-gnu/drivers/net/xen-netback/netback.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/net/xen-netback/netback.c	2016-02-15 15:47:06.000000000 -0500
@@ -2185,8 +2185,11 @@ static int __init netback_init(void)
 	if (!xen_domain())
 		return -ENODEV;
 
-	/* Allow as many queues as there are CPUs, by default */
-	xenvif_max_queues = num_online_cpus();
+	/* Allow as many queues as there are CPUs if user has not
+	 * specified a value.
+	 */
+	if (xenvif_max_queues == 0)
+		xenvif_max_queues = num_online_cpus();
 
 	if (fatal_skb_slots < XEN_NETBK_LEGACY_SLOTS_MAX) {
 		pr_info("fatal_skb_slots too small (%d), bump it to XEN_NETBK_LEGACY_SLOTS_MAX (%d)\n",
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/net/xen-netfront.c linux-libre-3.18.27-gnu/drivers/net/xen-netfront.c
--- linux-libre-3.18.26-gnu/drivers/net/xen-netfront.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/net/xen-netfront.c	2016-02-15 15:47:06.000000000 -0500
@@ -1792,19 +1792,19 @@ static void xennet_destroy_queues(struct
 }
 
 static int xennet_create_queues(struct netfront_info *info,
-				unsigned int num_queues)
+				unsigned int *num_queues)
 {
 	unsigned int i;
 	int ret;
 
-	info->queues = kcalloc(num_queues, sizeof(struct netfront_queue),
+	info->queues = kcalloc(*num_queues, sizeof(struct netfront_queue),
 			       GFP_KERNEL);
 	if (!info->queues)
 		return -ENOMEM;
 
 	rtnl_lock();
 
-	for (i = 0; i < num_queues; i++) {
+	for (i = 0; i < *num_queues; i++) {
 		struct netfront_queue *queue = &info->queues[i];
 
 		queue->id = i;
@@ -1814,7 +1814,7 @@ static int xennet_create_queues(struct n
 		if (ret < 0) {
 			dev_warn(&info->netdev->dev,
 				 "only created %d queues\n", i);
-			num_queues = i;
+			*num_queues = i;
 			break;
 		}
 
@@ -1824,11 +1824,11 @@ static int xennet_create_queues(struct n
 			napi_enable(&queue->napi);
 	}
 
-	netif_set_real_num_tx_queues(info->netdev, num_queues);
+	netif_set_real_num_tx_queues(info->netdev, *num_queues);
 
 	rtnl_unlock();
 
-	if (num_queues == 0) {
+	if (*num_queues == 0) {
 		dev_err(&info->netdev->dev, "no queues\n");
 		return -EINVAL;
 	}
@@ -1874,7 +1874,7 @@ static int talk_to_netback(struct xenbus
 	if (info->queues)
 		xennet_destroy_queues(info);
 
-	err = xennet_create_queues(info, num_queues);
+	err = xennet_create_queues(info, &num_queues);
 	if (err < 0)
 		goto destroy_ring;
 
@@ -2351,8 +2351,11 @@ static int __init netif_init(void)
 
 	pr_info("Initialising Xen virtual ethernet driver\n");
 
-	/* Allow as many queues as there are CPUs, by default */
-	xennet_max_queues = num_online_cpus();
+	/* Allow as many queues as there are CPUs if user has not
+	 * specified a value.
+	 */
+	if (xennet_max_queues == 0)
+		xennet_max_queues = num_online_cpus();
 
 	return xenbus_register_frontend(&netfront_driver);
 }
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/pci/bus.c linux-libre-3.18.27-gnu/drivers/pci/bus.c
--- linux-libre-3.18.26-gnu/drivers/pci/bus.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/pci/bus.c	2016-02-15 15:47:06.000000000 -0500
@@ -146,6 +146,8 @@ static int pci_bus_alloc_from_region(str
 	type_mask |= IORESOURCE_TYPE_BITS;
 
 	pci_bus_for_each_resource(bus, r, i) {
+		resource_size_t min_used = min;
+
 		if (!r)
 			continue;
 
@@ -169,12 +171,12 @@ static int pci_bus_alloc_from_region(str
 		 * overrides "min".
 		 */
 		if (avail.start)
-			min = avail.start;
+			min_used = avail.start;
 
 		max = avail.end;
 
 		/* Ok, try it out.. */
-		ret = allocate_resource(r, res, size, min, max,
+		ret = allocate_resource(r, res, size, min_used, max,
 					align, alignf, alignf_data);
 		if (ret == 0)
 			return 0;
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/pci/host/pci-dra7xx.c linux-libre-3.18.27-gnu/drivers/pci/host/pci-dra7xx.c
--- linux-libre-3.18.26-gnu/drivers/pci/host/pci-dra7xx.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/pci/host/pci-dra7xx.c	2016-02-15 15:47:06.000000000 -0500
@@ -289,7 +289,8 @@ static int add_pcie_port(struct dra7xx_p
 	}
 
 	ret = devm_request_irq(&pdev->dev, pp->irq,
-			       dra7xx_pcie_msi_irq_handler, IRQF_SHARED,
+			       dra7xx_pcie_msi_irq_handler,
+			       IRQF_SHARED | IRQF_NO_THREAD,
 			       "dra7-pcie-msi",	pp);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to request irq\n");
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/pci/host/pcie-rcar.c linux-libre-3.18.27-gnu/drivers/pci/host/pcie-rcar.c
--- linux-libre-3.18.26-gnu/drivers/pci/host/pcie-rcar.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/pci/host/pcie-rcar.c	2016-02-15 15:47:06.000000000 -0500
@@ -704,14 +704,16 @@ static int rcar_pcie_enable_msi(struct r
 
 	/* Two irqs are for MSI, but they are also used for non-MSI irqs */
 	err = devm_request_irq(&pdev->dev, msi->irq1, rcar_pcie_msi_irq,
-			       IRQF_SHARED, rcar_msi_irq_chip.name, pcie);
+			       IRQF_SHARED | IRQF_NO_THREAD,
+			       rcar_msi_irq_chip.name, pcie);
 	if (err < 0) {
 		dev_err(&pdev->dev, "failed to request IRQ: %d\n", err);
 		goto err;
 	}
 
 	err = devm_request_irq(&pdev->dev, msi->irq2, rcar_pcie_msi_irq,
-			       IRQF_SHARED, rcar_msi_irq_chip.name, pcie);
+			       IRQF_SHARED | IRQF_NO_THREAD,
+			       rcar_msi_irq_chip.name, pcie);
 	if (err < 0) {
 		dev_err(&pdev->dev, "failed to request IRQ: %d\n", err);
 		goto err;
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/pci/host/pcie-spear13xx.c linux-libre-3.18.27-gnu/drivers/pci/host/pcie-spear13xx.c
--- linux-libre-3.18.26-gnu/drivers/pci/host/pcie-spear13xx.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/pci/host/pcie-spear13xx.c	2016-02-15 15:47:06.000000000 -0500
@@ -280,7 +280,8 @@ static int add_pcie_port(struct pcie_por
 		return -ENODEV;
 	}
 	ret = devm_request_irq(dev, pp->irq, spear13xx_pcie_irq_handler,
-			       IRQF_SHARED, "spear1340-pcie", pp);
+			       IRQF_SHARED | IRQF_NO_THREAD,
+			       "spear1340-pcie", pp);
 	if (ret) {
 		dev_err(dev, "failed to request irq %d\n", pp->irq);
 		return ret;
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/pci/host/pcie-xilinx.c linux-libre-3.18.27-gnu/drivers/pci/host/pcie-xilinx.c
--- linux-libre-3.18.26-gnu/drivers/pci/host/pcie-xilinx.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/pci/host/pcie-xilinx.c	2016-02-15 15:47:06.000000000 -0500
@@ -859,7 +859,8 @@ static int xilinx_pcie_parse_dt(struct x
 
 	port->irq = irq_of_parse_and_map(node, 0);
 	err = devm_request_irq(dev, port->irq, xilinx_pcie_intr_handler,
-			       IRQF_SHARED, "xilinx-pcie", port);
+			       IRQF_SHARED | IRQF_NO_THREAD,
+			       "xilinx-pcie", port);
 	if (err) {
 		dev_err(dev, "unable to request irq %d\n", port->irq);
 		return err;
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/pci/host/pci-exynos.c linux-libre-3.18.27-gnu/drivers/pci/host/pci-exynos.c
--- linux-libre-3.18.26-gnu/drivers/pci/host/pci-exynos.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/pci/host/pci-exynos.c	2016-02-15 15:47:06.000000000 -0500
@@ -535,7 +535,8 @@ static int __init add_pcie_port(struct p
 
 		ret = devm_request_irq(&pdev->dev, pp->msi_irq,
 					exynos_pcie_msi_irq_handler,
-					IRQF_SHARED, "exynos-pcie", pp);
+					IRQF_SHARED | IRQF_NO_THREAD,
+					"exynos-pcie", pp);
 		if (ret) {
 			dev_err(&pdev->dev, "failed to request msi irq\n");
 			return ret;
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/pci/host/pci-imx6.c linux-libre-3.18.27-gnu/drivers/pci/host/pci-imx6.c
--- linux-libre-3.18.26-gnu/drivers/pci/host/pci-imx6.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/pci/host/pci-imx6.c	2016-02-15 15:47:06.000000000 -0500
@@ -533,8 +533,9 @@ static int __init imx6_add_pcie_port(str
 		}
 
 		ret = devm_request_irq(&pdev->dev, pp->msi_irq,
-		                       imx6_pcie_msi_handler,
-		                       IRQF_SHARED, "mx6-pcie-msi", pp);
+				       imx6_pcie_msi_handler,
+				       IRQF_SHARED | IRQF_NO_THREAD,
+				       "mx6-pcie-msi", pp);
 		if (ret) {
 			dev_err(&pdev->dev, "failed to request MSI irq\n");
 			return -ENODEV;
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/pci/host/pci-tegra.c linux-libre-3.18.27-gnu/drivers/pci/host/pci-tegra.c
--- linux-libre-3.18.26-gnu/drivers/pci/host/pci-tegra.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/pci/host/pci-tegra.c	2016-02-15 15:47:06.000000000 -0500
@@ -1374,7 +1374,7 @@ static int tegra_pcie_enable_msi(struct
 
 	msi->irq = err;
 
-	err = request_irq(msi->irq, tegra_pcie_msi_irq, 0,
+	err = request_irq(msi->irq, tegra_pcie_msi_irq, IRQF_NO_THREAD,
 			  tegra_msi_irq_chip.name, pcie);
 	if (err < 0) {
 		dev_err(&pdev->dev, "failed to request IRQ: %d\n", err);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/pci/hotplug/acpiphp_glue.c linux-libre-3.18.27-gnu/drivers/pci/hotplug/acpiphp_glue.c
--- linux-libre-3.18.26-gnu/drivers/pci/hotplug/acpiphp_glue.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/pci/hotplug/acpiphp_glue.c	2016-02-15 15:47:06.000000000 -0500
@@ -954,8 +954,10 @@ int acpiphp_enable_slot(struct acpiphp_s
 {
 	pci_lock_rescan_remove();
 
-	if (slot->flags & SLOT_IS_GOING_AWAY)
+	if (slot->flags & SLOT_IS_GOING_AWAY) {
+		pci_unlock_rescan_remove();
 		return -ENODEV;
+	}
 
 	/* configure all functions */
 	if (!(slot->flags & SLOT_ENABLED))
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/platform/x86/ideapad-laptop.c linux-libre-3.18.27-gnu/drivers/platform/x86/ideapad-laptop.c
--- linux-libre-3.18.26-gnu/drivers/platform/x86/ideapad-laptop.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/platform/x86/ideapad-laptop.c	2016-02-15 15:47:06.000000000 -0500
@@ -839,6 +839,13 @@ static const struct dmi_system_id no_hw_
 		},
 	},
 	{
+		.ident = "Lenovo ideapad Y700-17ISK",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700-17ISK"),
+		},
+	},
+	{
 		.ident = "Lenovo Yoga 2 11 / 13 / Pro",
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
@@ -852,6 +859,20 @@ static const struct dmi_system_id no_hw_
 			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 3 Pro-1370"),
 		},
 	},
+	{
+		.ident = "Lenovo Yoga 700",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 700"),
+		},
+	},
+	{
+		.ident = "Lenovo Yoga 900",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 900"),
+		},
+	},
 	{}
 };
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/scsi/sd.c linux-libre-3.18.27-gnu/drivers/scsi/sd.c
--- linux-libre-3.18.26-gnu/drivers/scsi/sd.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/scsi/sd.c	2016-02-15 15:47:06.000000000 -0500
@@ -3187,8 +3187,8 @@ static int sd_suspend_common(struct devi
 	struct scsi_disk *sdkp = scsi_disk_get_from_dev(dev);
 	int ret = 0;
 
-	if (!sdkp)
-		return 0;	/* this can happen */
+	if (!sdkp)	/* E.g.: runtime suspend following sd_remove() */
+		return 0;
 
 	if (sdkp->WCE && sdkp->media_present) {
 		sd_printk(KERN_NOTICE, sdkp, "Synchronizing SCSI cache\n");
@@ -3229,6 +3229,9 @@ static int sd_resume(struct device *dev)
 	struct scsi_disk *sdkp = scsi_disk_get_from_dev(dev);
 	int ret = 0;
 
+	if (!sdkp)	/* E.g.: runtime resume at the start of sd_probe() */
+		return 0;
+
 	if (!sdkp->device->manage_start_stop)
 		goto done;
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/scsi/sg.c linux-libre-3.18.27-gnu/drivers/scsi/sg.c
--- linux-libre-3.18.26-gnu/drivers/scsi/sg.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/scsi/sg.c	2016-02-15 15:47:06.000000000 -0500
@@ -1296,7 +1296,7 @@ sg_mmap(struct file *filp, struct vm_are
 	}
 
 	sfp->mmap_called = 1;
-	vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
+	vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
 	vma->vm_private_data = sfp;
 	vma->vm_ops = &sg_mmap_vm_ops;
 	return 0;
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/scsi/sr.c linux-libre-3.18.27-gnu/drivers/scsi/sr.c
--- linux-libre-3.18.26-gnu/drivers/scsi/sr.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/scsi/sr.c	2016-02-15 15:47:06.000000000 -0500
@@ -144,6 +144,9 @@ static int sr_runtime_suspend(struct dev
 {
 	struct scsi_cd *cd = dev_get_drvdata(dev);
 
+	if (!cd)	/* E.g.: runtime suspend following sr_remove() */
+		return 0;
+
 	if (cd->media_present)
 		return -EBUSY;
 	else
@@ -990,6 +993,7 @@ static int sr_remove(struct device *dev)
 	scsi_autopm_get_device(cd->device);
 
 	del_gendisk(cd->disk);
+	dev_set_drvdata(dev, NULL);
 
 	mutex_lock(&sr_ref_mutex);
 	kref_put(&cd->kref, sr_kref_release);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/staging/speakup/selection.c linux-libre-3.18.27-gnu/drivers/staging/speakup/selection.c
--- linux-libre-3.18.26-gnu/drivers/staging/speakup/selection.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/staging/speakup/selection.c	2016-02-15 15:47:06.000000000 -0500
@@ -141,7 +141,9 @@ static void __speakup_paste_selection(st
 	struct tty_ldisc *ld;
 	DECLARE_WAITQUEUE(wait, current);
 
-	ld = tty_ldisc_ref_wait(tty);
+	ld = tty_ldisc_ref(tty);
+	if (!ld)
+		goto tty_unref;
 	tty_buffer_lock_exclusive(&vc->port);
 
 	add_wait_queue(&vc->paste_wait, &wait);
@@ -161,6 +163,7 @@ static void __speakup_paste_selection(st
 
 	tty_buffer_unlock_exclusive(&vc->port);
 	tty_ldisc_deref(ld);
+tty_unref:
 	tty_kref_put(tty);
 }
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/staging/speakup/serialio.c linux-libre-3.18.27-gnu/drivers/staging/speakup/serialio.c
--- linux-libre-3.18.26-gnu/drivers/staging/speakup/serialio.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/staging/speakup/serialio.c	2016-02-15 15:47:06.000000000 -0500
@@ -6,6 +6,11 @@
 #include "spk_priv.h"
 #include "serialio.h"
 
+#include <linux/serial_core.h>
+/* WARNING:  Do not change this to <linux/serial.h> without testing that
+ * SERIAL_PORT_DFNS does get defined to the appropriate value. */
+#include <asm/serial.h>
+
 #ifndef SERIAL_PORT_DFNS
 #define SERIAL_PORT_DFNS
 #endif
@@ -23,9 +28,15 @@ const struct old_serial_port *spk_serial
 	int baud = 9600, quot = 0;
 	unsigned int cval = 0;
 	int cflag = CREAD | HUPCL | CLOCAL | B9600 | CS8;
-	const struct old_serial_port *ser = rs_table + index;
+	const struct old_serial_port *ser;
 	int err;
 
+	if (index >= ARRAY_SIZE(rs_table)) {
+		pr_info("no port info for ttyS%d\n", index);
+		return NULL;
+	}
+	ser = rs_table + index;
+
 	/*	Divisor, bytesize and parity */
 	quot = ser->baud_base / baud;
 	cval = cflag & (CSIZE | CSTOPB);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/target/iscsi/iscsi_target_configfs.c linux-libre-3.18.27-gnu/drivers/target/iscsi/iscsi_target_configfs.c
--- linux-libre-3.18.26-gnu/drivers/target/iscsi/iscsi_target_configfs.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/target/iscsi/iscsi_target_configfs.c	2016-02-15 15:47:06.000000000 -0500
@@ -1887,7 +1887,8 @@ static void lio_tpg_release_fabric_acl(
 }
 
 /*
- * Called with spin_lock_bh(struct se_portal_group->session_lock) held..
+ * Called with spin_lock_irq(struct se_portal_group->session_lock) held
+ * or not held.
  *
  * Also, this function calls iscsit_inc_session_usage_count() on the
  * struct iscsi_session in question.
@@ -1895,19 +1896,32 @@ static void lio_tpg_release_fabric_acl(
 static int lio_tpg_shutdown_session(struct se_session *se_sess)
 {
 	struct iscsi_session *sess = se_sess->fabric_sess_ptr;
+	struct se_portal_group *se_tpg = se_sess->se_tpg;
+	bool local_lock = false;
+
+	if (!spin_is_locked(&se_tpg->session_lock)) {
+		spin_lock_irq(&se_tpg->session_lock);
+		local_lock = true;
+	}
 
 	spin_lock(&sess->conn_lock);
 	if (atomic_read(&sess->session_fall_back_to_erl0) ||
 	    atomic_read(&sess->session_logout) ||
 	    (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) {
 		spin_unlock(&sess->conn_lock);
+		if (local_lock)
+			spin_unlock_irq(&sess->conn_lock);
 		return 0;
 	}
 	atomic_set(&sess->session_reinstatement, 1);
 	spin_unlock(&sess->conn_lock);
 
 	iscsit_stop_time2retain_timer(sess);
+	spin_unlock_irq(&se_tpg->session_lock);
+
 	iscsit_stop_session(sess, 1, 1);
+	if (!local_lock)
+		spin_lock_irq(&se_tpg->session_lock);
 
 	return 1;
 }
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/thermal/step_wise.c linux-libre-3.18.27-gnu/drivers/thermal/step_wise.c
--- linux-libre-3.18.26-gnu/drivers/thermal/step_wise.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/thermal/step_wise.c	2016-02-15 15:47:06.000000000 -0500
@@ -63,6 +63,19 @@ static unsigned long get_target_state(st
 	next_target = instance->target;
 	dev_dbg(&cdev->device, "cur_state=%ld\n", cur_state);
 
+	if (!instance->initialized) {
+		if (throttle) {
+			next_target = (cur_state + 1) >= instance->upper ?
+					instance->upper :
+					((cur_state + 1) < instance->lower ?
+					instance->lower : (cur_state + 1));
+		} else {
+			next_target = THERMAL_NO_TARGET;
+		}
+
+		return next_target;
+	}
+
 	switch (trend) {
 	case THERMAL_TREND_RAISING:
 		if (throttle) {
@@ -149,7 +162,7 @@ static void thermal_zone_trip_update(str
 		dev_dbg(&instance->cdev->device, "old_target=%d, target=%d\n",
 					old_target, (int)instance->target);
 
-		if (old_target == instance->target)
+		if (instance->initialized && old_target == instance->target)
 			continue;
 
 		/* Activate a passive thermal instance */
@@ -161,7 +174,7 @@ static void thermal_zone_trip_update(str
 			instance->target == THERMAL_NO_TARGET)
 			update_passive_instance(tz, trip_type, -1);
 
-
+		instance->initialized = true;
 		instance->cdev->updated = false; /* cdev needs update */
 	}
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/thermal/thermal_core.c linux-libre-3.18.27-gnu/drivers/thermal/thermal_core.c
--- linux-libre-3.18.26-gnu/drivers/thermal/thermal_core.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/thermal/thermal_core.c	2016-02-15 15:47:06.000000000 -0500
@@ -37,6 +37,7 @@
 #include <linux/of.h>
 #include <net/netlink.h>
 #include <net/genetlink.h>
+#include <linux/suspend.h>
 
 #define CREATE_TRACE_POINTS
 #include <trace/events/thermal.h>
@@ -59,6 +60,8 @@ static LIST_HEAD(thermal_governor_list);
 static DEFINE_MUTEX(thermal_list_lock);
 static DEFINE_MUTEX(thermal_governor_lock);
 
+static atomic_t in_suspend;
+
 static struct thermal_governor *def_governor;
 
 static struct thermal_governor *__find_governor(const char *name)
@@ -469,14 +472,31 @@ static void update_temperature(struct th
 	mutex_unlock(&tz->lock);
 
 	trace_thermal_temperature(tz);
-	dev_dbg(&tz->device, "last_temperature=%d, current_temperature=%d\n",
-				tz->last_temperature, tz->temperature);
+	if (tz->last_temperature == THERMAL_TEMP_INVALID)
+		dev_dbg(&tz->device, "last_temperature N/A, current_temperature=%d\n",
+			tz->temperature);
+	else
+		dev_dbg(&tz->device, "last_temperature=%d, current_temperature=%d\n",
+			tz->last_temperature, tz->temperature);
+}
+
+static void thermal_zone_device_reset(struct thermal_zone_device *tz)
+{
+	struct thermal_instance *pos;
+
+	tz->temperature = THERMAL_TEMP_INVALID;
+	tz->passive = 0;
+	list_for_each_entry(pos, &tz->thermal_instances, tz_node)
+		pos->initialized = false;
 }
 
 void thermal_zone_device_update(struct thermal_zone_device *tz)
 {
 	int count;
 
+	if (atomic_read(&in_suspend))
+		return;
+
 	if (!tz->ops->get_temp)
 		return;
 
@@ -994,6 +1014,7 @@ int thermal_zone_bind_cooling_device(str
 	if (!result) {
 		list_add_tail(&dev->tz_node, &tz->thermal_instances);
 		list_add_tail(&dev->cdev_node, &cdev->thermal_instances);
+		atomic_set(&tz->need_update, 1);
 	}
 	mutex_unlock(&cdev->lock);
 	mutex_unlock(&tz->lock);
@@ -1100,6 +1121,7 @@ __thermal_cooling_device_register(struct
 				  const struct thermal_cooling_device_ops *ops)
 {
 	struct thermal_cooling_device *cdev;
+	struct thermal_zone_device *pos = NULL;
 	int result;
 
 	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
@@ -1158,6 +1180,12 @@ __thermal_cooling_device_register(struct
 	/* Update binding information for 'this' new cdev */
 	bind_cdev(cdev);
 
+	mutex_lock(&thermal_list_lock);
+	list_for_each_entry(pos, &thermal_tz_list, node)
+		if (atomic_cmpxchg(&pos->need_update, 1, 0))
+			thermal_zone_device_update(pos);
+	mutex_unlock(&thermal_list_lock);
+
 	return cdev;
 
 unregister:
@@ -1493,6 +1521,8 @@ struct thermal_zone_device *thermal_zone
 	tz->trips = trips;
 	tz->passive_delay = passive_delay;
 	tz->polling_delay = polling_delay;
+	/* A new thermal zone needs to be updated anyway. */
+	atomic_set(&tz->need_update, 1);
 
 	dev_set_name(&tz->device, "thermal_zone%d", tz->id);
 	result = device_register(&tz->device);
@@ -1573,7 +1603,10 @@ struct thermal_zone_device *thermal_zone
 	if (!tz->ops->get_temp)
 		thermal_zone_device_set_polling(tz, 0);
 
-	thermal_zone_device_update(tz);
+	thermal_zone_device_reset(tz);
+	/* Update the new thermal zone and mark it as already updated. */
+	if (atomic_cmpxchg(&tz->need_update, 1, 0))
+		thermal_zone_device_update(tz);
 
 	return tz;
 
@@ -1811,6 +1844,36 @@ static void thermal_unregister_governors
 	thermal_gov_user_space_unregister();
 }
 
+static int thermal_pm_notify(struct notifier_block *nb,
+				unsigned long mode, void *_unused)
+{
+	struct thermal_zone_device *tz;
+
+	switch (mode) {
+	case PM_HIBERNATION_PREPARE:
+	case PM_RESTORE_PREPARE:
+	case PM_SUSPEND_PREPARE:
+		atomic_set(&in_suspend, 1);
+		break;
+	case PM_POST_HIBERNATION:
+	case PM_POST_RESTORE:
+	case PM_POST_SUSPEND:
+		atomic_set(&in_suspend, 0);
+		list_for_each_entry(tz, &thermal_tz_list, node) {
+			thermal_zone_device_reset(tz);
+			thermal_zone_device_update(tz);
+		}
+		break;
+	default:
+		break;
+	}
+	return 0;
+}
+
+static struct notifier_block thermal_pm_nb = {
+	.notifier_call = thermal_pm_notify,
+};
+
 static int __init thermal_init(void)
 {
 	int result;
@@ -1831,6 +1894,11 @@ static int __init thermal_init(void)
 	if (result)
 		goto exit_netlink;
 
+	result = register_pm_notifier(&thermal_pm_nb);
+	if (result)
+		pr_warn("Thermal: Can not register suspend notifier, return %d\n",
+			result);
+
 	return 0;
 
 exit_netlink:
@@ -1850,6 +1918,7 @@ error:
 
 static void __exit thermal_exit(void)
 {
+	unregister_pm_notifier(&thermal_pm_nb);
 	of_thermal_destroy_zones();
 	genetlink_exit();
 	class_unregister(&thermal_class);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/thermal/thermal_core.h linux-libre-3.18.27-gnu/drivers/thermal/thermal_core.h
--- linux-libre-3.18.26-gnu/drivers/thermal/thermal_core.h	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/thermal/thermal_core.h	2016-02-15 15:47:06.000000000 -0500
@@ -41,6 +41,7 @@ struct thermal_instance {
 	struct thermal_zone_device *tz;
 	struct thermal_cooling_device *cdev;
 	int trip;
+	bool initialized;
 	unsigned long upper;	/* Highest cooling state for this trip point */
 	unsigned long lower;	/* Lowest cooling state for this trip point */
 	unsigned long target;	/* expected cooling state */
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/tty/n_tty.c linux-libre-3.18.27-gnu/drivers/tty/n_tty.c
--- linux-libre-3.18.26-gnu/drivers/tty/n_tty.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/tty/n_tty.c	2016-02-15 15:47:06.000000000 -0500
@@ -277,16 +277,13 @@ static void n_tty_check_throttle(struct
 
 static void n_tty_check_unthrottle(struct tty_struct *tty)
 {
-	if (tty->driver->type == TTY_DRIVER_TYPE_PTY &&
-	    tty->link->ldisc->ops->write_wakeup == n_tty_write_wakeup) {
+	if (tty->driver->type == TTY_DRIVER_TYPE_PTY) {
 		if (chars_in_buffer(tty) > TTY_THRESHOLD_UNTHROTTLE)
 			return;
 		if (!tty->count)
 			return;
 		n_tty_set_room(tty);
-		n_tty_write_wakeup(tty->link);
-		if (waitqueue_active(&tty->link->write_wait))
-			wake_up_interruptible_poll(&tty->link->write_wait, POLLOUT);
+		tty_wakeup(tty->link);
 		return;
 	}
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/tty/serial/8250/8250_pci.c linux-libre-3.18.27-gnu/drivers/tty/serial/8250/8250_pci.c
--- linux-libre-3.18.26-gnu/drivers/tty/serial/8250/8250_pci.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/tty/serial/8250/8250_pci.c	2016-02-15 15:47:06.000000000 -0500
@@ -1355,6 +1355,9 @@ ce4100_serial_setup(struct serial_privat
 #define PCI_DEVICE_ID_INTEL_BSW_UART1	0x228a
 #define PCI_DEVICE_ID_INTEL_BSW_UART2	0x228c
 
+#define PCI_DEVICE_ID_INTEL_BDW_UART1	0x9ce3
+#define PCI_DEVICE_ID_INTEL_BDW_UART2	0x9ce4
+
 #define BYT_PRV_CLK			0x800
 #define BYT_PRV_CLK_EN			(1 << 0)
 #define BYT_PRV_CLK_M_VAL_SHIFT		1
@@ -1456,11 +1459,13 @@ byt_serial_setup(struct serial_private *
 	switch (pdev->device) {
 	case PCI_DEVICE_ID_INTEL_BYT_UART1:
 	case PCI_DEVICE_ID_INTEL_BSW_UART1:
+	case PCI_DEVICE_ID_INTEL_BDW_UART1:
 		rx_param->src_id = 3;
 		tx_param->dst_id = 2;
 		break;
 	case PCI_DEVICE_ID_INTEL_BYT_UART2:
 	case PCI_DEVICE_ID_INTEL_BSW_UART2:
+	case PCI_DEVICE_ID_INTEL_BDW_UART2:
 		rx_param->src_id = 5;
 		tx_param->dst_id = 4;
 		break;
@@ -1944,6 +1949,20 @@ static struct pci_serial_quirk pci_seria
 		.subdevice	= PCI_ANY_ID,
 		.setup		= byt_serial_setup,
 	},
+	{
+		.vendor		= PCI_VENDOR_ID_INTEL,
+		.device		= PCI_DEVICE_ID_INTEL_BDW_UART1,
+		.subvendor	= PCI_ANY_ID,
+		.subdevice	= PCI_ANY_ID,
+		.setup		= byt_serial_setup,
+	},
+	{
+		.vendor		= PCI_VENDOR_ID_INTEL,
+		.device		= PCI_DEVICE_ID_INTEL_BDW_UART2,
+		.subvendor	= PCI_ANY_ID,
+		.subdevice	= PCI_ANY_ID,
+		.setup		= byt_serial_setup,
+	},
 	/*
 	 * ITE
 	 */
@@ -5290,6 +5309,16 @@ static struct pci_device_id serial_pci_t
 		PCI_ANY_ID,  PCI_ANY_ID,
 		PCI_CLASS_COMMUNICATION_SERIAL << 8, 0xff0000,
 		pbn_byt },
+
+	/* Intel Broadwell */
+	{	PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BDW_UART1,
+		PCI_ANY_ID,  PCI_ANY_ID,
+		PCI_CLASS_COMMUNICATION_SERIAL << 8, 0xff0000,
+		pbn_byt },
+	{	PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BDW_UART2,
+		PCI_ANY_ID,  PCI_ANY_ID,
+		PCI_CLASS_COMMUNICATION_SERIAL << 8, 0xff0000,
+		pbn_byt },
 
 	/*
 	 * Intel Quark x1000
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/tty/tty_io.c linux-libre-3.18.27-gnu/drivers/tty/tty_io.c
--- linux-libre-3.18.26-gnu/drivers/tty/tty_io.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/tty/tty_io.c	2016-02-15 15:47:06.000000000 -0500
@@ -2594,6 +2594,28 @@ static int tiocsetd(struct tty_struct *t
 }
 
 /**
+ *	tiocgetd	-	get line discipline
+ *	@tty: tty device
+ *	@p: pointer to user data
+ *
+ *	Retrieves the line discipline id directly from the ldisc.
+ *
+ *	Locking: waits for ldisc reference (in case the line discipline
+ *		is changing or the tty is being hungup)
+ */
+
+static int tiocgetd(struct tty_struct *tty, int __user *p)
+{
+	struct tty_ldisc *ld;
+	int ret;
+
+	ld = tty_ldisc_ref_wait(tty);
+	ret = put_user(ld->ops->num, p);
+	tty_ldisc_deref(ld);
+	return ret;
+}
+
+/**
  *	send_break	-	performed time break
  *	@tty: device to break on
  *	@duration: timeout in mS
@@ -2807,7 +2829,7 @@ long tty_ioctl(struct file *file, unsign
 	case TIOCGSID:
 		return tiocgsid(tty, real_tty, p);
 	case TIOCGETD:
-		return put_user(tty->ldisc->ops->num, (int __user *)p);
+		return tiocgetd(tty, p);
 	case TIOCSETD:
 		return tiocsetd(tty, p);
 	case TIOCVHANGUP:
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/usb/class/cdc-acm.c linux-libre-3.18.27-gnu/drivers/usb/class/cdc-acm.c
--- linux-libre-3.18.26-gnu/drivers/usb/class/cdc-acm.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/usb/class/cdc-acm.c	2016-02-15 15:47:06.000000000 -0500
@@ -430,7 +430,8 @@ static void acm_read_bulk_callback(struc
 	if (urb->status) {
 		dev_dbg(&acm->data->dev, "%s - non-zero urb status: %d\n",
 							__func__, urb->status);
-		return;
+		if ((urb->status != -ENOENT) || (urb->actual_length == 0))
+			return;
 	}
 
 	usb_mark_last_busy(acm->dev);
@@ -1423,6 +1424,8 @@ made_compressed_probe:
 				usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress),
 				NULL, acm->writesize, acm_write_bulk, snd);
 		snd->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+		if (quirks & SEND_ZERO_PACKET)
+			snd->urb->transfer_flags |= URB_ZERO_PACKET;
 		snd->instance = acm;
 	}
 
@@ -1860,6 +1863,11 @@ static const struct usb_device_id acm_id
 	},
 #endif
 
+	/*Samsung phone in firmware update mode */
+	{ USB_DEVICE(0x04e8, 0x685d),
+	.driver_info = IGNORE_DEVICE,
+	},
+
 	/* Exclude Infineon Flash Loader utility */
 	{ USB_DEVICE(0x058b, 0x0041),
 	.driver_info = IGNORE_DEVICE,
@@ -1883,6 +1891,10 @@ static const struct usb_device_id acm_id
 	{ USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
 		USB_CDC_ACM_PROTO_AT_CDMA) },
 
+	{ USB_DEVICE(0x1519, 0x0452), /* Intel 7260 modem */
+	.driver_info = SEND_ZERO_PACKET,
+	},
+
 	{ }
 };
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/usb/class/cdc-acm.h linux-libre-3.18.27-gnu/drivers/usb/class/cdc-acm.h
--- linux-libre-3.18.26-gnu/drivers/usb/class/cdc-acm.h	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/usb/class/cdc-acm.h	2016-02-15 15:47:06.000000000 -0500
@@ -135,3 +135,4 @@ struct acm {
 #define IGNORE_DEVICE			BIT(5)
 #define QUIRK_CONTROL_LINE_STATE	BIT(6)
 #define CLEAR_HALT_CONDITIONS		BIT(7)
+#define SEND_ZERO_PACKET		BIT(8)
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/usb/core/hub.c linux-libre-3.18.27-gnu/drivers/usb/core/hub.c
--- linux-libre-3.18.26-gnu/drivers/usb/core/hub.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/usb/core/hub.c	2016-02-15 15:47:06.000000000 -0500
@@ -1034,10 +1034,20 @@ static void hub_activate(struct usb_hub
 	unsigned delay;
 
 	/* Continue a partial initialization */
-	if (type == HUB_INIT2)
-		goto init2;
-	if (type == HUB_INIT3)
+	if (type == HUB_INIT2 || type == HUB_INIT3) {
+		device_lock(hub->intfdev);
+
+		/* Was the hub disconnected while we were waiting? */
+		if (hub->disconnected) {
+			device_unlock(hub->intfdev);
+			kref_put(&hub->kref, hub_release);
+			return;
+		}
+		if (type == HUB_INIT2)
+			goto init2;
 		goto init3;
+	}
+	kref_get(&hub->kref);
 
 	/* The superspeed hub except for root hub has to use Hub Depth
 	 * value as an offset into the route string to locate the bits
@@ -1235,6 +1245,7 @@ static void hub_activate(struct usb_hub
 			queue_delayed_work(system_power_efficient_wq,
 					&hub->init_work,
 					msecs_to_jiffies(delay));
+			device_unlock(hub->intfdev);
 			return;		/* Continues at init3: below */
 		} else {
 			msleep(delay);
@@ -1256,6 +1267,11 @@ static void hub_activate(struct usb_hub
 	/* Allow autosuspend if it was suppressed */
 	if (type <= HUB_INIT3)
 		usb_autopm_put_interface_async(to_usb_interface(hub->intfdev));
+
+	if (type == HUB_INIT2 || type == HUB_INIT3)
+		device_unlock(hub->intfdev);
+
+	kref_put(&hub->kref, hub_release);
 }
 
 /* Implement the continuations for the delays above */
@@ -5347,7 +5363,6 @@ static int usb_reset_and_verify_device(s
 	}
 
 	bos = udev->bos;
-	udev->bos = NULL;
 
 	for (i = 0; i < SET_CONFIG_TRIES; ++i) {
 
@@ -5440,8 +5455,11 @@ done:
 	usb_set_usb2_hardware_lpm(udev, 1);
 	usb_unlocked_enable_lpm(udev);
 	usb_enable_ltm(udev);
-	usb_release_bos_descriptor(udev);
-	udev->bos = bos;
+	/* release the new BOS descriptor allocated  by hub_port_init() */
+	if (udev->bos != bos) {
+		usb_release_bos_descriptor(udev);
+		udev->bos = bos;
+	}
 	return 0;
 
 re_enumerate:
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/usb/host/xhci.c linux-libre-3.18.27-gnu/drivers/usb/host/xhci.c
--- linux-libre-3.18.26-gnu/drivers/usb/host/xhci.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/usb/host/xhci.c	2016-02-15 15:47:06.000000000 -0500
@@ -1548,7 +1548,9 @@ int xhci_urb_dequeue(struct usb_hcd *hcd
 		xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb,
 				"HW died, freeing TD.");
 		urb_priv = urb->hcpriv;
-		for (i = urb_priv->td_cnt; i < urb_priv->length; i++) {
+		for (i = urb_priv->td_cnt;
+		     i < urb_priv->length && xhci->devs[urb->dev->slot_id];
+		     i++) {
 			td = urb_priv->td[i];
 			if (!list_empty(&td->td_list))
 				list_del_init(&td->td_list);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/usb/host/xhci.h linux-libre-3.18.27-gnu/drivers/usb/host/xhci.h
--- linux-libre-3.18.26-gnu/drivers/usb/host/xhci.h	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/usb/host/xhci.h	2016-02-15 15:47:06.000000000 -0500
@@ -1565,6 +1565,7 @@ struct xhci_hcd {
 /* For controllers with a broken beyond repair streams implementation */
 #define XHCI_BROKEN_STREAMS	(1 << 19)
 #define XHCI_PME_STUCK_QUIRK	(1 << 20)
+#define XHCI_SSIC_PORT_UNUSED	(1 << 22)
 	unsigned int		num_active_eps;
 	unsigned int		limit_active_eps;
 	/* There are two roothubs to keep track of bus suspend info for */
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/usb/host/xhci-pci.c linux-libre-3.18.27-gnu/drivers/usb/host/xhci-pci.c
--- linux-libre-3.18.26-gnu/drivers/usb/host/xhci-pci.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/usb/host/xhci-pci.c	2016-02-15 15:47:06.000000000 -0500
@@ -23,10 +23,17 @@
 #include <linux/pci.h>
 #include <linux/slab.h>
 #include <linux/module.h>
+#include <linux/acpi.h>
 
 #include "xhci.h"
 #include "xhci-trace.h"
 
+#define SSIC_PORT_NUM		2
+#define SSIC_PORT_CFG2		0x880c
+#define SSIC_PORT_CFG2_OFFSET	0x30
+#define PROG_DONE		(1 << 30)
+#define SSIC_PORT_UNUSED	(1 << 31)
+
 /* Device for a quirk */
 #define PCI_VENDOR_ID_FRESCO_LOGIC	0x1b73
 #define PCI_DEVICE_ID_FRESCO_LOGIC_PDK	0x1000
@@ -40,6 +47,7 @@
 #define PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI		0x22b5
 #define PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI		0xa12f
 #define PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI	0x9d2f
+#define PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI		0x0aa8
 
 static const char hcd_name[] = "xhci_hcd";
 
@@ -140,9 +148,14 @@ static void xhci_pci_quirks(struct devic
 	if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
 		(pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI ||
 		 pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI ||
-		 pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI)) {
+		 pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI ||
+		 pdev->device == PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI)) {
 		xhci->quirks |= XHCI_PME_STUCK_QUIRK;
 	}
+	if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
+		 pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI) {
+		xhci->quirks |= XHCI_SSIC_PORT_UNUSED;
+	}
 	if (pdev->vendor == PCI_VENDOR_ID_ETRON &&
 			pdev->device == PCI_DEVICE_ID_EJ168) {
 		xhci->quirks |= XHCI_RESET_ON_RESUME;
@@ -169,20 +182,18 @@ static void xhci_pci_quirks(struct devic
 				"QUIRK: Resetting on resume");
 }
 
-/*
- * Make sure PME works on some Intel xHCI controllers by writing 1 to clear
- * the Internal PME flag bit in vendor specific PMCTRL register at offset 0x80a4
- */
-static void xhci_pme_quirk(struct xhci_hcd *xhci)
+#ifdef CONFIG_ACPI
+static void xhci_pme_acpi_rtd3_enable(struct pci_dev *dev)
 {
-	u32 val;
-	void __iomem *reg;
-
-	reg = (void __iomem *) xhci->cap_regs + 0x80a4;
-	val = readl(reg);
-	writel(val | BIT(28), reg);
-	readl(reg);
+	static const u8 intel_dsm_uuid[] = {
+		0xb7, 0x0c, 0x34, 0xac,	0x01, 0xe9, 0xbf, 0x45,
+		0xb7, 0xe6, 0x2b, 0x34, 0xec, 0x93, 0x1e, 0x23,
+	};
+	acpi_evaluate_dsm(ACPI_HANDLE(&dev->dev), intel_dsm_uuid, 3, 1, NULL);
 }
+#else
+	static void xhci_pme_acpi_rtd3_enable(struct pci_dev *dev) { }
+#endif /* CONFIG_ACPI */
 
 /* called during probe() after chip reset completes */
 static int xhci_pci_setup(struct usb_hcd *hcd)
@@ -263,6 +274,9 @@ static int xhci_pci_probe(struct pci_dev
 			HCC_MAX_PSA(xhci->hcc_params) >= 4)
 		xhci->shared_hcd->can_do_streams = 1;
 
+	if (xhci->quirks & XHCI_PME_STUCK_QUIRK)
+		xhci_pme_acpi_rtd3_enable(dev);
+
 	/* USB-2 and USB-3 roothubs initialized, allow runtime pm suspend */
 	pm_runtime_put_noidle(&dev->dev);
 
@@ -296,10 +310,65 @@ static void xhci_pci_remove(struct pci_d
 }
 
 #ifdef CONFIG_PM
+/*
+ * In some Intel xHCI controllers, in order to get D3 working,
+ * through a vendor specific SSIC CONFIG register at offset 0x883c,
+ * SSIC PORT need to be marked as "unused" before putting xHCI
+ * into D3. After D3 exit, the SSIC port need to be marked as "used".
+ * Without this change, xHCI might not enter D3 state.
+ */
+static void xhci_ssic_port_unused_quirk(struct usb_hcd *hcd, bool suspend)
+{
+	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);
+	u32 val;
+	void __iomem *reg;
+	int i;
+
+	for (i = 0; i < SSIC_PORT_NUM; i++) {
+		reg = (void __iomem *) xhci->cap_regs +
+				SSIC_PORT_CFG2 +
+				i * SSIC_PORT_CFG2_OFFSET;
+
+		/* Notify SSIC that SSIC profile programming is not done. */
+		val = readl(reg) & ~PROG_DONE;
+		writel(val, reg);
+
+		/* Mark SSIC port as unused(suspend) or used(resume) */
+		val = readl(reg);
+		if (suspend)
+			val |= SSIC_PORT_UNUSED;
+		else
+			val &= ~SSIC_PORT_UNUSED;
+		writel(val, reg);
+
+		/* Notify SSIC that SSIC profile programming is done */
+		val = readl(reg) | PROG_DONE;
+		writel(val, reg);
+		readl(reg);
+	}
+}
+
+/*
+ * Make sure PME works on some Intel xHCI controllers by writing 1 to clear
+ * the Internal PME flag bit in vendor specific PMCTRL register at offset 0x80a4
+ */
+static void xhci_pme_quirk(struct usb_hcd *hcd)
+{
+	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);
+	void __iomem *reg;
+	u32 val;
+
+	reg = (void __iomem *) xhci->cap_regs + 0x80a4;
+	val = readl(reg);
+	writel(val | BIT(28), reg);
+	readl(reg);
+}
+
 static int xhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup)
 {
 	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);
 	struct pci_dev		*pdev = to_pci_dev(hcd->self.controller);
+	int			ret;
 
 	/*
 	 * Systems with the TI redriver that loses port status change events
@@ -309,9 +378,16 @@ static int xhci_pci_suspend(struct usb_h
 		pdev->no_d3cold = true;
 
 	if (xhci->quirks & XHCI_PME_STUCK_QUIRK)
-		xhci_pme_quirk(xhci);
+		xhci_pme_quirk(hcd);
 
-	return xhci_suspend(xhci, do_wakeup);
+	if (xhci->quirks & XHCI_SSIC_PORT_UNUSED)
+		xhci_ssic_port_unused_quirk(hcd, true);
+
+	ret = xhci_suspend(xhci, do_wakeup);
+	if (ret && (xhci->quirks & XHCI_SSIC_PORT_UNUSED))
+		xhci_ssic_port_unused_quirk(hcd, false);
+
+	return ret;
 }
 
 static int xhci_pci_resume(struct usb_hcd *hcd, bool hibernated)
@@ -341,8 +417,11 @@ static int xhci_pci_resume(struct usb_hc
 	if (pdev->vendor == PCI_VENDOR_ID_INTEL)
 		usb_enable_intel_xhci_ports(pdev);
 
+	if (xhci->quirks & XHCI_SSIC_PORT_UNUSED)
+		xhci_ssic_port_unused_quirk(hcd, false);
+
 	if (xhci->quirks & XHCI_PME_STUCK_QUIRK)
-		xhci_pme_quirk(xhci);
+		xhci_pme_quirk(hcd);
 
 	retval = xhci_resume(xhci, hibernated);
 	return retval;
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/usb/serial/cp210x.c linux-libre-3.18.27-gnu/drivers/usb/serial/cp210x.c
--- linux-libre-3.18.26-gnu/drivers/usb/serial/cp210x.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/usb/serial/cp210x.c	2016-02-15 15:47:06.000000000 -0500
@@ -98,6 +98,7 @@ static const struct usb_device_id id_tab
 	{ USB_DEVICE(0x10C4, 0x81AC) }, /* MSD Dash Hawk */
 	{ USB_DEVICE(0x10C4, 0x81AD) }, /* INSYS USB Modem */
 	{ USB_DEVICE(0x10C4, 0x81C8) }, /* Lipowsky Industrie Elektronik GmbH, Baby-JTAG */
+	{ USB_DEVICE(0x10C4, 0x81D7) }, /* IAI Corp. RCB-CV-USB USB to RS485 Adaptor */
 	{ USB_DEVICE(0x10C4, 0x81E2) }, /* Lipowsky Industrie Elektronik GmbH, Baby-LIN */
 	{ USB_DEVICE(0x10C4, 0x81E7) }, /* Aerocomm Radio */
 	{ USB_DEVICE(0x10C4, 0x81E8) }, /* Zephyr Bioharness */
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/usb/serial/ftdi_sio.c linux-libre-3.18.27-gnu/drivers/usb/serial/ftdi_sio.c
--- linux-libre-3.18.26-gnu/drivers/usb/serial/ftdi_sio.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/usb/serial/ftdi_sio.c	2016-02-15 15:47:06.000000000 -0500
@@ -824,6 +824,7 @@ static const struct usb_device_id id_tab
 	{ USB_DEVICE(FTDI_VID, FTDI_TURTELIZER_PID),
 		.driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
 	{ USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID_USB60F) },
+	{ USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID_SCU18) },
 	{ USB_DEVICE(FTDI_VID, FTDI_REU_TINY_PID) },
 
 	/* Papouch devices based on FTDI chip */
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/usb/serial/ftdi_sio_ids.h linux-libre-3.18.27-gnu/drivers/usb/serial/ftdi_sio_ids.h
--- linux-libre-3.18.26-gnu/drivers/usb/serial/ftdi_sio_ids.h	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/usb/serial/ftdi_sio_ids.h	2016-02-15 15:47:06.000000000 -0500
@@ -615,6 +615,7 @@
  */
 #define RATOC_VENDOR_ID		0x0584
 #define RATOC_PRODUCT_ID_USB60F	0xb020
+#define RATOC_PRODUCT_ID_SCU18	0xb03a
 
 /*
  * Infineon Technologies
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/usb/serial/option.c linux-libre-3.18.27-gnu/drivers/usb/serial/option.c
--- linux-libre-3.18.26-gnu/drivers/usb/serial/option.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/usb/serial/option.c	2016-02-15 15:47:06.000000000 -0500
@@ -270,6 +270,8 @@ static void option_instat_callback(struc
 #define TELIT_PRODUCT_CC864_SINGLE		0x1006
 #define TELIT_PRODUCT_DE910_DUAL		0x1010
 #define TELIT_PRODUCT_UE910_V2			0x1012
+#define TELIT_PRODUCT_LE922_USBCFG0		0x1042
+#define TELIT_PRODUCT_LE922_USBCFG3		0x1043
 #define TELIT_PRODUCT_LE920			0x1200
 #define TELIT_PRODUCT_LE910			0x1201
 
@@ -624,6 +626,16 @@ static const struct option_blacklist_inf
 	.reserved = BIT(8) | BIT(10) | BIT(11),
 };
 
+static const struct option_blacklist_info telit_le922_blacklist_usbcfg0 = {
+	.sendsetup = BIT(2),
+	.reserved = BIT(0) | BIT(1) | BIT(3),
+};
+
+static const struct option_blacklist_info telit_le922_blacklist_usbcfg3 = {
+	.sendsetup = BIT(0),
+	.reserved = BIT(1) | BIT(2) | BIT(3),
+};
+
 static const struct usb_device_id option_ids[] = {
 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COLT) },
 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA) },
@@ -1172,6 +1184,10 @@ static const struct usb_device_id option
 	{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_CC864_SINGLE) },
 	{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_DE910_DUAL) },
 	{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_UE910_V2) },
+	{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE922_USBCFG0),
+		.driver_info = (kernel_ulong_t)&telit_le922_blacklist_usbcfg0 },
+	{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE922_USBCFG3),
+		.driver_info = (kernel_ulong_t)&telit_le922_blacklist_usbcfg3 },
 	{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE910),
 		.driver_info = (kernel_ulong_t)&telit_le910_blacklist },
 	{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE920),
@@ -1688,7 +1704,7 @@ static const struct usb_device_id option
 	{ USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_EU3_P) },
 	{ USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_PH8),
 		.driver_info = (kernel_ulong_t)&net_intf4_blacklist },
-	{ USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_AHXX) },
+	{ USB_DEVICE_INTERFACE_CLASS(CINTERION_VENDOR_ID, CINTERION_PRODUCT_AHXX, 0xff) },
 	{ USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_PLXX),
 		.driver_info = (kernel_ulong_t)&net_intf4_blacklist },
 	{ USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_HC28_MDM) }, 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/drivers/usb/serial/visor.c linux-libre-3.18.27-gnu/drivers/usb/serial/visor.c
--- linux-libre-3.18.26-gnu/drivers/usb/serial/visor.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/drivers/usb/serial/visor.c	2016-02-15 15:47:06.000000000 -0500
@@ -544,6 +544,11 @@ static int treo_attach(struct usb_serial
 		(serial->num_interrupt_in == 0))
 		return 0;
 
+	if (serial->num_bulk_in < 2 || serial->num_interrupt_in < 2) {
+		dev_err(&serial->interface->dev, "missing endpoints\n");
+		return -ENODEV;
+	}
+
 	/*
 	* It appears that Treos and Kyoceras want to use the
 	* 1st bulk in endpoint to communicate with the 2nd bulk out endpoint,
@@ -597,8 +602,10 @@ static int clie_5_attach(struct usb_seri
 	 */
 
 	/* some sanity check */
-	if (serial->num_ports < 2)
-		return -1;
+	if (serial->num_bulk_out < 2) {
+		dev_err(&serial->interface->dev, "missing bulk out endpoints\n");
+		return -ENODEV;
+	}
 
 	/* port 0 now uses the modified endpoint Address */
 	port = serial->port[0];
diff -druNp --no-dereference linux-libre-3.18.26-gnu/fs/cifs/cifs_debug.c linux-libre-3.18.27-gnu/fs/cifs/cifs_debug.c
--- linux-libre-3.18.26-gnu/fs/cifs/cifs_debug.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/fs/cifs/cifs_debug.c	2016-02-15 15:47:06.000000000 -0500
@@ -34,27 +34,9 @@
 void
 cifs_dump_mem(char *label, void *data, int length)
 {
-	int i, j;
-	int *intptr = data;
-	char *charptr = data;
-	char buf[10], line[80];
-
-	printk(KERN_DEBUG "%s: dump of %d bytes of data at 0x%p\n",
-		label, length, data);
-	for (i = 0; i < length; i += 16) {
-		line[0] = 0;
-		for (j = 0; (j < 4) && (i + j * 4 < length); j++) {
-			sprintf(buf, " %08x", intptr[i / 4 + j]);
-			strcat(line, buf);
-		}
-		buf[0] = ' ';
-		buf[2] = 0;
-		for (j = 0; (j < 16) && (i + j < length); j++) {
-			buf[1] = isprint(charptr[i + j]) ? charptr[i + j] : '.';
-			strcat(line, buf);
-		}
-		printk(KERN_DEBUG "%s\n", line);
-	}
+	pr_debug("%s: dump of %d bytes of data at 0x%p\n", label, length, data);
+	print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 16, 4,
+		       data, length, true);
 }
 
 #ifdef CONFIG_CIFS_DEBUG
@@ -68,7 +50,7 @@ void cifs_vfs_err(const char *fmt, ...)
 	vaf.fmt = fmt;
 	vaf.va = &args;
 
-	printk(KERN_ERR "CIFS VFS: %pV", &vaf);
+	pr_err_ratelimited("CIFS VFS: %pV", &vaf);
 
 	va_end(args);
 }
diff -druNp --no-dereference linux-libre-3.18.26-gnu/fs/cifs/cifs_debug.h linux-libre-3.18.27-gnu/fs/cifs/cifs_debug.h
--- linux-libre-3.18.26-gnu/fs/cifs/cifs_debug.h	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/fs/cifs/cifs_debug.h	2016-02-15 15:47:06.000000000 -0500
@@ -51,15 +51,13 @@ __printf(1, 2) void cifs_vfs_err(const c
 /* information message: e.g., configuration, major event */
 #define cifs_dbg(type, fmt, ...)					\
 do {									\
-	if (type == FYI) {						\
-		if (cifsFYI & CIFS_INFO) {				\
-			printk(KERN_DEBUG "%s: " fmt,			\
-			       __FILE__, ##__VA_ARGS__);		\
-		}							\
+	if (type == FYI && cifsFYI & CIFS_INFO) {			\
+		pr_debug_ratelimited("%s: "				\
+			    fmt, __FILE__, ##__VA_ARGS__);		\
 	} else if (type == VFS) {					\
 		cifs_vfs_err(fmt, ##__VA_ARGS__);			\
 	} else if (type == NOISY && type != 0) {			\
-		printk(KERN_DEBUG fmt, ##__VA_ARGS__);			\
+		pr_debug_ratelimited(fmt, ##__VA_ARGS__);		\
 	}								\
 } while (0)
 
@@ -71,7 +69,7 @@ do {									\
 #define cifs_dbg(type, fmt, ...)					\
 do {									\
 	if (0)								\
-		printk(KERN_DEBUG fmt, ##__VA_ARGS__);			\
+		pr_debug(fmt, ##__VA_ARGS__);				\
 } while (0)
 #endif
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/fs/cifs/connect.c linux-libre-3.18.27-gnu/fs/cifs/connect.c
--- linux-libre-3.18.26-gnu/fs/cifs/connect.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/fs/cifs/connect.c	2016-02-15 15:47:06.000000000 -0500
@@ -357,7 +357,6 @@ cifs_reconnect(struct TCP_Server_Info *s
 	server->session_key.response = NULL;
 	server->session_key.len = 0;
 	server->lstrp = jiffies;
-	mutex_unlock(&server->srv_mutex);
 
 	/* mark submitted MIDs for retry and issue callback */
 	INIT_LIST_HEAD(&retry_list);
@@ -370,6 +369,7 @@ cifs_reconnect(struct TCP_Server_Info *s
 		list_move(&mid_entry->qhead, &retry_list);
 	}
 	spin_unlock(&GlobalMid_Lock);
+	mutex_unlock(&server->srv_mutex);
 
 	cifs_dbg(FYI, "%s: issuing mid callbacks\n", __func__);
 	list_for_each_safe(tmp, tmp2, &retry_list) {
@@ -1466,9 +1466,7 @@ cifs_parse_mount_options(const char *mou
 			vol->seal = 1;
 			break;
 		case Opt_noac:
-			printk(KERN_WARNING "CIFS: Mount option noac not "
-				"supported. Instead set "
-				"/proc/fs/cifs/LookupCacheEnabled to 0\n");
+			pr_warn("CIFS: Mount option noac not supported. Instead set /proc/fs/cifs/LookupCacheEnabled to 0\n");
 			break;
 		case Opt_fsc:
 #ifndef CONFIG_CIFS_FSCACHE
@@ -1598,7 +1596,7 @@ cifs_parse_mount_options(const char *mou
 
 			if (strnlen(string, CIFS_MAX_USERNAME_LEN) >
 							CIFS_MAX_USERNAME_LEN) {
-				printk(KERN_WARNING "CIFS: username too long\n");
+				pr_warn("CIFS: username too long\n");
 				goto cifs_parse_mount_err;
 			}
 			vol->username = kstrdup(string, GFP_KERNEL);
@@ -1662,8 +1660,7 @@ cifs_parse_mount_options(const char *mou
 			temp_len = strlen(value);
 			vol->password = kzalloc(temp_len+1, GFP_KERNEL);
 			if (vol->password == NULL) {
-				printk(KERN_WARNING "CIFS: no memory "
-						    "for password\n");
+				pr_warn("CIFS: no memory for password\n");
 				goto cifs_parse_mount_err;
 			}
 
@@ -1687,8 +1684,7 @@ cifs_parse_mount_options(const char *mou
 
 			if (!cifs_convert_address(dstaddr, string,
 					strlen(string))) {
-				printk(KERN_ERR "CIFS: bad ip= option (%s).\n",
-					string);
+				pr_err("CIFS: bad ip= option (%s).\n", string);
 				goto cifs_parse_mount_err;
 			}
 			got_ip = true;
@@ -1700,15 +1696,13 @@ cifs_parse_mount_options(const char *mou
 
 			if (strnlen(string, CIFS_MAX_DOMAINNAME_LEN)
 					== CIFS_MAX_DOMAINNAME_LEN) {
-				printk(KERN_WARNING "CIFS: domain name too"
-						    " long\n");
+				pr_warn("CIFS: domain name too long\n");
 				goto cifs_parse_mount_err;
 			}
 
 			vol->domainname = kstrdup(string, GFP_KERNEL);
 			if (!vol->domainname) {
-				printk(KERN_WARNING "CIFS: no memory "
-						    "for domainname\n");
+				pr_warn("CIFS: no memory for domainname\n");
 				goto cifs_parse_mount_err;
 			}
 			cifs_dbg(FYI, "Domain name set\n");
@@ -1721,8 +1715,8 @@ cifs_parse_mount_options(const char *mou
 			if (!cifs_convert_address(
 					(struct sockaddr *)&vol->srcaddr,
 					string, strlen(string))) {
-				printk(KERN_WARNING "CIFS:  Could not parse"
-						    " srcaddr: %s\n", string);
+				pr_warn("CIFS: Could not parse srcaddr: %s\n",
+					string);
 				goto cifs_parse_mount_err;
 			}
 			break;
@@ -1732,8 +1726,7 @@ cifs_parse_mount_options(const char *mou
 				goto out_nomem;
 
 			if (strnlen(string, 1024) >= 65) {
-				printk(KERN_WARNING "CIFS: iocharset name "
-						    "too long.\n");
+				pr_warn("CIFS: iocharset name too long.\n");
 				goto cifs_parse_mount_err;
 			}
 
@@ -1741,8 +1734,7 @@ cifs_parse_mount_options(const char *mou
 				vol->iocharset = kstrdup(string,
 							 GFP_KERNEL);
 				if (!vol->iocharset) {
-					printk(KERN_WARNING "CIFS: no memory"
-							    "for charset\n");
+					pr_warn("CIFS: no memory for charset\n");
 					goto cifs_parse_mount_err;
 				}
 			}
@@ -1773,9 +1765,7 @@ cifs_parse_mount_options(const char *mou
 			 * set at top of the function
 			 */
 			if (i == RFC1001_NAME_LEN && string[i] != 0)
-				printk(KERN_WARNING "CIFS: netbiosname"
-				       " longer than 15 truncated.\n");
-
+				pr_warn("CIFS: netbiosname longer than 15 truncated.\n");
 			break;
 		case Opt_servern:
 			/* servernetbiosname specified override *SMBSERVER */
@@ -1801,8 +1791,7 @@ cifs_parse_mount_options(const char *mou
 			/* The string has 16th byte zero still from
 			   set at top of the function  */
 			if (i == RFC1001_NAME_LEN && string[i] != 0)
-				printk(KERN_WARNING "CIFS: server net"
-				       "biosname longer than 15 truncated.\n");
+				pr_warn("CIFS: server netbiosname longer than 15 truncated.\n");
 			break;
 		case Opt_ver:
 			string = match_strdup(args);
@@ -1814,8 +1803,7 @@ cifs_parse_mount_options(const char *mou
 				break;
 			}
 			/* For all other value, error */
-			printk(KERN_WARNING "CIFS: Invalid version"
-					    " specified\n");
+			pr_warn("CIFS: Invalid version specified\n");
 			goto cifs_parse_mount_err;
 		case Opt_vers:
 			string = match_strdup(args);
@@ -1856,7 +1844,7 @@ cifs_parse_mount_options(const char *mou
 	}
 
 	if (!sloppy && invalid) {
-		printk(KERN_ERR "CIFS: Unknown mount option \"%s\"\n", invalid);
+		pr_err("CIFS: Unknown mount option \"%s\"\n", invalid);
 		goto cifs_parse_mount_err;
 	}
 
@@ -1882,8 +1870,7 @@ cifs_parse_mount_options(const char *mou
 		/* No ip= option specified? Try to get it from UNC */
 		if (!cifs_convert_address(dstaddr, &vol->UNC[2],
 						strlen(&vol->UNC[2]))) {
-			printk(KERN_ERR "Unable to determine destination "
-					"address.\n");
+			pr_err("Unable to determine destination address.\n");
 			goto cifs_parse_mount_err;
 		}
 	}
@@ -1894,20 +1881,18 @@ cifs_parse_mount_options(const char *mou
 	if (uid_specified)
 		vol->override_uid = override_uid;
 	else if (override_uid == 1)
-		printk(KERN_NOTICE "CIFS: ignoring forceuid mount option "
-				   "specified with no uid= option.\n");
+		pr_notice("CIFS: ignoring forceuid mount option specified with no uid= option.\n");
 
 	if (gid_specified)
 		vol->override_gid = override_gid;
 	else if (override_gid == 1)
-		printk(KERN_NOTICE "CIFS: ignoring forcegid mount option "
-				   "specified with no gid= option.\n");
+		pr_notice("CIFS: ignoring forcegid mount option specified with no gid= option.\n");
 
 	kfree(mountdata_copy);
 	return 0;
 
 out_nomem:
-	printk(KERN_WARNING "Could not allocate temporary buffer\n");
+	pr_warn("Could not allocate temporary buffer\n");
 cifs_parse_mount_err:
 	kfree(string);
 	kfree(mountdata_copy);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/fs/cifs/misc.c linux-libre-3.18.27-gnu/fs/cifs/misc.c
--- linux-libre-3.18.26-gnu/fs/cifs/misc.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/fs/cifs/misc.c	2016-02-15 15:47:06.000000000 -0500
@@ -513,39 +513,11 @@ is_valid_oplock_break(char *buffer, stru
 void
 dump_smb(void *buf, int smb_buf_length)
 {
-	int i, j;
-	char debug_line[17];
-	unsigned char *buffer = buf;
-
 	if (traceSMB == 0)
 		return;
 
-	for (i = 0, j = 0; i < smb_buf_length; i++, j++) {
-		if (i % 8 == 0) {
-			/* have reached the beginning of line */
-			printk(KERN_DEBUG "| ");
-			j = 0;
-		}
-		printk("%0#4x ", buffer[i]);
-		debug_line[2 * j] = ' ';
-		if (isprint(buffer[i]))
-			debug_line[1 + (2 * j)] = buffer[i];
-		else
-			debug_line[1 + (2 * j)] = '_';
-
-		if (i % 8 == 7) {
-			/* reached end of line, time to print ascii */
-			debug_line[16] = 0;
-			printk(" | %s\n", debug_line);
-		}
-	}
-	for (; j < 8; j++) {
-		printk("     ");
-		debug_line[2 * j] = ' ';
-		debug_line[1 + (2 * j)] = ' ';
-	}
-	printk(" | %s\n", debug_line);
-	return;
+	print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_NONE, 8, 2, buf,
+		       smb_buf_length, true);
 }
 
 void
diff -druNp --no-dereference linux-libre-3.18.26-gnu/fs/cifs/readdir.c linux-libre-3.18.27-gnu/fs/cifs/readdir.c
--- linux-libre-3.18.26-gnu/fs/cifs/readdir.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/fs/cifs/readdir.c	2016-02-15 15:47:06.000000000 -0500
@@ -845,6 +845,7 @@ int cifs_readdir(struct file *file, stru
 		 * if buggy server returns . and .. late do we want to
 		 * check for that here?
 		 */
+		*tmp_buf = 0;
 		rc = cifs_filldir(current_entry, file, ctx,
 				  tmp_buf, max_len);
 		if (rc) {
diff -druNp --no-dereference linux-libre-3.18.26-gnu/fs/cifs/transport.c linux-libre-3.18.27-gnu/fs/cifs/transport.c
--- linux-libre-3.18.26-gnu/fs/cifs/transport.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/fs/cifs/transport.c	2016-02-15 15:47:06.000000000 -0500
@@ -99,9 +99,9 @@ DeleteMidQEntry(struct mid_q_entry *midE
 	   something is wrong, unless it is quite a slow link or server */
 	if ((now - midEntry->when_alloc) > HZ) {
 		if ((cifsFYI & CIFS_TIMER) && (midEntry->command != command)) {
-			printk(KERN_DEBUG " CIFS slow rsp: cmd %d mid %llu",
+			pr_debug(" CIFS slow rsp: cmd %d mid %llu",
 			       midEntry->command, midEntry->mid);
-			printk(" A: 0x%lx S: 0x%lx R: 0x%lx\n",
+			pr_info(" A: 0x%lx S: 0x%lx R: 0x%lx\n",
 			       now - midEntry->when_alloc,
 			       now - midEntry->when_sent,
 			       now - midEntry->when_received);
@@ -576,14 +576,16 @@ cifs_call_async(struct TCP_Server_Info *
 	cifs_in_send_dec(server);
 	cifs_save_when_sent(mid);
 
-	if (rc < 0)
+	if (rc < 0) {
 		server->sequence_number -= 2;
+		cifs_delete_mid(mid);
+	}
+
 	mutex_unlock(&server->srv_mutex);
 
 	if (rc == 0)
 		return 0;
 
-	cifs_delete_mid(mid);
 	add_credits_and_wake_if(server, credits, optype);
 	return rc;
 }
diff -druNp --no-dereference linux-libre-3.18.26-gnu/fs/hostfs/hostfs_kern.c linux-libre-3.18.27-gnu/fs/hostfs/hostfs_kern.c
--- linux-libre-3.18.26-gnu/fs/hostfs/hostfs_kern.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/fs/hostfs/hostfs_kern.c	2016-02-15 15:47:06.000000000 -0500
@@ -720,15 +720,13 @@ static int hostfs_mknod(struct inode *di
 
 	init_special_inode(inode, mode, dev);
 	err = do_mknod(name, mode, MAJOR(dev), MINOR(dev));
-	if (!err)
+	if (err)
 		goto out_free;
 
 	err = read_name(inode, name);
 	__putname(name);
 	if (err)
 		goto out_put;
-	if (err)
-		goto out_put;
 
 	d_instantiate(dentry, inode);
 	return 0;
diff -druNp --no-dereference linux-libre-3.18.26-gnu/fs/locks.c linux-libre-3.18.27-gnu/fs/locks.c
--- linux-libre-3.18.26-gnu/fs/locks.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/fs/locks.c	2016-02-15 15:47:06.000000000 -0500
@@ -2127,7 +2127,6 @@ int fcntl_setlk(unsigned int fd, struct
 		goto out;
 	}
 
-again:
 	error = flock_to_posix_lock(filp, file_lock, &flock);
 	if (error)
 		goto out;
@@ -2169,19 +2168,22 @@ again:
 	 * Attempt to detect a close/fcntl race and recover by
 	 * releasing the lock that was just acquired.
 	 */
-	/*
-	 * we need that spin_lock here - it prevents reordering between
-	 * update of inode->i_flock and check for it done in close().
-	 * rcu_read_lock() wouldn't do.
-	 */
-	spin_lock(&current->files->file_lock);
-	f = fcheck(fd);
-	spin_unlock(&current->files->file_lock);
-	if (!error && f != filp && flock.l_type != F_UNLCK) {
-		flock.l_type = F_UNLCK;
-		goto again;
+	if (!error && file_lock->fl_type != F_UNLCK) {
+		/*
+		 * We need that spin_lock here - it prevents reordering between
+		 * update of i_flctx->flc_posix and check for it done in
+		 * close(). rcu_read_lock() wouldn't do.
+		 */
+		spin_lock(&current->files->file_lock);
+		f = fcheck(fd);
+		spin_unlock(&current->files->file_lock);
+		if (f != filp) {
+			file_lock->fl_type = F_UNLCK;
+			error = do_lock_file_wait(filp, cmd, file_lock);
+			WARN_ON_ONCE(error);
+			error = -EBADF;
+		}
 	}
-
 out:
 	locks_free_lock(file_lock);
 	return error;
@@ -2267,7 +2269,6 @@ int fcntl_setlk64(unsigned int fd, struc
 		goto out;
 	}
 
-again:
 	error = flock64_to_posix_lock(filp, file_lock, &flock);
 	if (error)
 		goto out;
@@ -2309,14 +2310,22 @@ again:
 	 * Attempt to detect a close/fcntl race and recover by
 	 * releasing the lock that was just acquired.
 	 */
-	spin_lock(&current->files->file_lock);
-	f = fcheck(fd);
-	spin_unlock(&current->files->file_lock);
-	if (!error && f != filp && flock.l_type != F_UNLCK) {
-		flock.l_type = F_UNLCK;
-		goto again;
+	if (!error && file_lock->fl_type != F_UNLCK) {
+		/*
+		 * We need that spin_lock here - it prevents reordering between
+		 * update of i_flctx->flc_posix and check for it done in
+		 * close(). rcu_read_lock() wouldn't do.
+		 */
+		spin_lock(&current->files->file_lock);
+		f = fcheck(fd);
+		spin_unlock(&current->files->file_lock);
+		if (f != filp) {
+			file_lock->fl_type = F_UNLCK;
+			error = do_lock_file_wait(filp, cmd, file_lock);
+			WARN_ON_ONCE(error);
+			error = -EBADF;
+		}
 	}
-
 out:
 	locks_free_lock(file_lock);
 	return error;
diff -druNp --no-dereference linux-libre-3.18.26-gnu/fs/nfs/client.c linux-libre-3.18.27-gnu/fs/nfs/client.c
--- linux-libre-3.18.26-gnu/fs/nfs/client.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/fs/nfs/client.c	2016-02-15 15:47:06.000000000 -0500
@@ -776,7 +776,7 @@ static int nfs_init_server(struct nfs_se
 	server->options = data->options;
 	server->caps |= NFS_CAP_HARDLINKS|NFS_CAP_SYMLINKS|NFS_CAP_FILEID|
 		NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER|NFS_CAP_OWNER_GROUP|
-		NFS_CAP_ATIME|NFS_CAP_CTIME|NFS_CAP_MTIME|NFS_CAP_CHANGE_ATTR;
+		NFS_CAP_ATIME|NFS_CAP_CTIME|NFS_CAP_MTIME;
 
 	if (data->rsize)
 		server->rsize = nfs_block_size(data->rsize, NULL);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/fs/nfs/inode.c linux-libre-3.18.27-gnu/fs/nfs/inode.c
--- linux-libre-3.18.26-gnu/fs/nfs/inode.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/fs/nfs/inode.c	2016-02-15 15:47:06.000000000 -0500
@@ -435,7 +435,7 @@ nfs_fhget(struct super_block *sb, struct
 			nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATTR);
 		if (fattr->valid & NFS_ATTR_FATTR_CHANGE)
 			inode->i_version = fattr->change_attr;
-		else if (nfs_server_capable(inode, NFS_CAP_CHANGE_ATTR))
+		else
 			nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATTR);
 		if (fattr->valid & NFS_ATTR_FATTR_SIZE)
 			inode->i_size = nfs_size_to_loff_t(fattr->size);
@@ -1533,6 +1533,7 @@ static int nfs_update_inode(struct inode
 	unsigned long invalid = 0;
 	unsigned long now = jiffies;
 	unsigned long save_cache_validity;
+	bool cache_revalidated = true;
 
 	dfprintk(VFS, "NFS: %s(%s/%lu fh_crc=0x%08x ct=%d info=0x%x)\n",
 			__func__, inode->i_sb->s_id, inode->i_ino,
@@ -1595,22 +1596,28 @@ static int nfs_update_inode(struct inode
 				nfs_force_lookup_revalidate(inode);
 			inode->i_version = fattr->change_attr;
 		}
-	} else if (server->caps & NFS_CAP_CHANGE_ATTR)
+	} else {
 		nfsi->cache_validity |= save_cache_validity;
+		cache_revalidated = false;
+	}
 
 	if (fattr->valid & NFS_ATTR_FATTR_MTIME) {
 		memcpy(&inode->i_mtime, &fattr->mtime, sizeof(inode->i_mtime));
-	} else if (server->caps & NFS_CAP_MTIME)
+	} else if (server->caps & NFS_CAP_MTIME) {
 		nfsi->cache_validity |= save_cache_validity &
 				(NFS_INO_INVALID_ATTR
 				| NFS_INO_REVAL_FORCED);
+		cache_revalidated = false;
+	}
 
 	if (fattr->valid & NFS_ATTR_FATTR_CTIME) {
 		memcpy(&inode->i_ctime, &fattr->ctime, sizeof(inode->i_ctime));
-	} else if (server->caps & NFS_CAP_CTIME)
+	} else if (server->caps & NFS_CAP_CTIME) {
 		nfsi->cache_validity |= save_cache_validity &
 				(NFS_INO_INVALID_ATTR
 				| NFS_INO_REVAL_FORCED);
+		cache_revalidated = false;
+	}
 
 	/* Check if our cached file size is stale */
 	if (fattr->valid & NFS_ATTR_FATTR_SIZE) {
@@ -1631,19 +1638,23 @@ static int nfs_update_inode(struct inode
 					(long long)cur_isize,
 					(long long)new_isize);
 		}
-	} else
+	} else {
 		nfsi->cache_validity |= save_cache_validity &
 				(NFS_INO_INVALID_ATTR
 				| NFS_INO_REVAL_PAGECACHE
 				| NFS_INO_REVAL_FORCED);
+		cache_revalidated = false;
+	}
 
 
 	if (fattr->valid & NFS_ATTR_FATTR_ATIME)
 		memcpy(&inode->i_atime, &fattr->atime, sizeof(inode->i_atime));
-	else if (server->caps & NFS_CAP_ATIME)
+	else if (server->caps & NFS_CAP_ATIME) {
 		nfsi->cache_validity |= save_cache_validity &
 				(NFS_INO_INVALID_ATIME
 				| NFS_INO_REVAL_FORCED);
+		cache_revalidated = false;
+	}
 
 	if (fattr->valid & NFS_ATTR_FATTR_MODE) {
 		if ((inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO)) {
@@ -1652,36 +1663,42 @@ static int nfs_update_inode(struct inode
 			inode->i_mode = newmode;
 			invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
 		}
-	} else if (server->caps & NFS_CAP_MODE)
+	} else if (server->caps & NFS_CAP_MODE) {
 		nfsi->cache_validity |= save_cache_validity &
 				(NFS_INO_INVALID_ATTR
 				| NFS_INO_INVALID_ACCESS
 				| NFS_INO_INVALID_ACL
 				| NFS_INO_REVAL_FORCED);
+		cache_revalidated = false;
+	}
 
 	if (fattr->valid & NFS_ATTR_FATTR_OWNER) {
 		if (!uid_eq(inode->i_uid, fattr->uid)) {
 			invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
 			inode->i_uid = fattr->uid;
 		}
-	} else if (server->caps & NFS_CAP_OWNER)
+	} else if (server->caps & NFS_CAP_OWNER) {
 		nfsi->cache_validity |= save_cache_validity &
 				(NFS_INO_INVALID_ATTR
 				| NFS_INO_INVALID_ACCESS
 				| NFS_INO_INVALID_ACL
 				| NFS_INO_REVAL_FORCED);
+		cache_revalidated = false;
+	}
 
 	if (fattr->valid & NFS_ATTR_FATTR_GROUP) {
 		if (!gid_eq(inode->i_gid, fattr->gid)) {
 			invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
 			inode->i_gid = fattr->gid;
 		}
-	} else if (server->caps & NFS_CAP_OWNER_GROUP)
+	} else if (server->caps & NFS_CAP_OWNER_GROUP) {
 		nfsi->cache_validity |= save_cache_validity &
 				(NFS_INO_INVALID_ATTR
 				| NFS_INO_INVALID_ACCESS
 				| NFS_INO_INVALID_ACL
 				| NFS_INO_REVAL_FORCED);
+		cache_revalidated = false;
+	}
 
 	if (fattr->valid & NFS_ATTR_FATTR_NLINK) {
 		if (inode->i_nlink != fattr->nlink) {
@@ -1690,19 +1707,22 @@ static int nfs_update_inode(struct inode
 				invalid |= NFS_INO_INVALID_DATA;
 			set_nlink(inode, fattr->nlink);
 		}
-	} else if (server->caps & NFS_CAP_NLINK)
+	} else if (server->caps & NFS_CAP_NLINK) {
 		nfsi->cache_validity |= save_cache_validity &
 				(NFS_INO_INVALID_ATTR
 				| NFS_INO_REVAL_FORCED);
+		cache_revalidated = false;
+	}
 
 	if (fattr->valid & NFS_ATTR_FATTR_SPACE_USED) {
 		/*
 		 * report the blocks in 512byte units
 		 */
 		inode->i_blocks = nfs_calc_block_size(fattr->du.nfs3.used);
- 	}
-	if (fattr->valid & NFS_ATTR_FATTR_BLOCKS_USED)
+	} else if (fattr->valid & NFS_ATTR_FATTR_BLOCKS_USED)
 		inode->i_blocks = fattr->du.nfs2.blocks;
+	else
+		cache_revalidated = false;
 
 	/* Update attrtimeo value if we're out of the unstable period */
 	if (invalid & NFS_INO_INVALID_ATTR) {
@@ -1711,15 +1731,19 @@ static int nfs_update_inode(struct inode
 		nfsi->attrtimeo_timestamp = now;
 		nfsi->attr_gencount = nfs_inc_attr_generation_counter();
 	} else {
-		if (!time_in_range_open(now, nfsi->attrtimeo_timestamp, nfsi->attrtimeo_timestamp + nfsi->attrtimeo)) {
-			if ((nfsi->attrtimeo <<= 1) > NFS_MAXATTRTIMEO(inode))
-				nfsi->attrtimeo = NFS_MAXATTRTIMEO(inode);
+		if (cache_revalidated) {
+			if (!time_in_range_open(now, nfsi->attrtimeo_timestamp,
+				nfsi->attrtimeo_timestamp + nfsi->attrtimeo)) {
+				nfsi->attrtimeo <<= 1;
+				if (nfsi->attrtimeo > NFS_MAXATTRTIMEO(inode))
+					nfsi->attrtimeo = NFS_MAXATTRTIMEO(inode);
+			}
 			nfsi->attrtimeo_timestamp = now;
 		}
 	}
 
 	/* Don't declare attrcache up to date if there were no attrs! */
-	if (fattr->valid != 0)
+	if (cache_revalidated)
 		invalid &= ~NFS_INO_INVALID_ATTR;
 
 	/* Don't invalidate the data if we were to blame */
diff -druNp --no-dereference linux-libre-3.18.26-gnu/fs/nfs/nfs4proc.c linux-libre-3.18.27-gnu/fs/nfs/nfs4proc.c
--- linux-libre-3.18.26-gnu/fs/nfs/nfs4proc.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/fs/nfs/nfs4proc.c	2016-02-15 15:47:06.000000000 -0500
@@ -1231,6 +1231,7 @@ static void __update_open_stateid(struct
 	 * Protect the call to nfs4_state_set_mode_locked and
 	 * serialise the stateid update
 	 */
+	spin_lock(&state->owner->so_lock);
 	write_seqlock(&state->seqlock);
 	if (deleg_stateid != NULL) {
 		nfs4_stateid_copy(&state->stateid, deleg_stateid);
@@ -1239,7 +1240,6 @@ static void __update_open_stateid(struct
 	if (open_stateid != NULL)
 		nfs_set_open_stateid_locked(state, open_stateid, fmode);
 	write_sequnlock(&state->seqlock);
-	spin_lock(&state->owner->so_lock);
 	update_open_stateflags(state, fmode);
 	spin_unlock(&state->owner->so_lock);
 }
@@ -8388,7 +8388,6 @@ static const struct nfs4_minor_version_o
 	.minor_version = 0,
 	.init_caps = NFS_CAP_READDIRPLUS
 		| NFS_CAP_ATOMIC_OPEN
-		| NFS_CAP_CHANGE_ATTR
 		| NFS_CAP_POSIX_LOCK,
 	.init_client = nfs40_init_client,
 	.shutdown_client = nfs40_shutdown_client,
@@ -8407,7 +8406,6 @@ static const struct nfs4_minor_version_o
 	.minor_version = 1,
 	.init_caps = NFS_CAP_READDIRPLUS
 		| NFS_CAP_ATOMIC_OPEN
-		| NFS_CAP_CHANGE_ATTR
 		| NFS_CAP_POSIX_LOCK
 		| NFS_CAP_STATEID_NFSV41
 		| NFS_CAP_ATOMIC_OPEN_V1,
@@ -8429,7 +8427,6 @@ static const struct nfs4_minor_version_o
 	.minor_version = 2,
 	.init_caps = NFS_CAP_READDIRPLUS
 		| NFS_CAP_ATOMIC_OPEN
-		| NFS_CAP_CHANGE_ATTR
 		| NFS_CAP_POSIX_LOCK
 		| NFS_CAP_STATEID_NFSV41
 		| NFS_CAP_ATOMIC_OPEN_V1
diff -druNp --no-dereference linux-libre-3.18.26-gnu/fs/ocfs2/dlm/dlmmaster.c linux-libre-3.18.27-gnu/fs/ocfs2/dlm/dlmmaster.c
--- linux-libre-3.18.26-gnu/fs/ocfs2/dlm/dlmmaster.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/fs/ocfs2/dlm/dlmmaster.c	2016-02-15 15:47:06.000000000 -0500
@@ -2512,6 +2512,11 @@ static int dlm_migrate_lockres(struct dl
 	spin_lock(&dlm->master_lock);
 	ret = dlm_add_migration_mle(dlm, res, mle, &oldmle, name,
 				    namelen, target, dlm->node_num);
+	/* get an extra reference on the mle.
+	 * otherwise the assert_master from the new
+	 * master will destroy this.
+	 */
+	dlm_get_mle_inuse(mle);
 	spin_unlock(&dlm->master_lock);
 	spin_unlock(&dlm->spinlock);
 
@@ -2547,6 +2552,7 @@ fail:
 		if (mle_added) {
 			dlm_mle_detach_hb_events(dlm, mle);
 			dlm_put_mle(mle);
+			dlm_put_mle_inuse(mle);
 		} else if (mle) {
 			kmem_cache_free(dlm_mle_cache, mle);
 			mle = NULL;
@@ -2564,17 +2570,6 @@ fail:
 	 * ensure that all assert_master work is flushed. */
 	flush_workqueue(dlm->dlm_worker);
 
-	/* get an extra reference on the mle.
-	 * otherwise the assert_master from the new
-	 * master will destroy this.
-	 * also, make sure that all callers of dlm_get_mle
-	 * take both dlm->spinlock and dlm->master_lock */
-	spin_lock(&dlm->spinlock);
-	spin_lock(&dlm->master_lock);
-	dlm_get_mle_inuse(mle);
-	spin_unlock(&dlm->master_lock);
-	spin_unlock(&dlm->spinlock);
-
 	/* notify new node and send all lock state */
 	/* call send_one_lockres with migration flag.
 	 * this serves as notice to the target node that a
@@ -3303,6 +3298,15 @@ top:
 			    mle->new_master != dead_node)
 				continue;
 
+			if (mle->new_master == dead_node && mle->inuse) {
+				mlog(ML_NOTICE, "%s: target %u died during "
+						"migration from %u, the MLE is "
+						"still keep used, ignore it!\n",
+						dlm->name, dead_node,
+						mle->master);
+				continue;
+			}
+
 			/* If we have reached this point, this mle needs to be
 			 * removed from the list and freed. */
 			dlm_clean_migration_mle(dlm, mle);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/fs/ocfs2/dlm/dlmrecovery.c linux-libre-3.18.27-gnu/fs/ocfs2/dlm/dlmrecovery.c
--- linux-libre-3.18.26-gnu/fs/ocfs2/dlm/dlmrecovery.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/fs/ocfs2/dlm/dlmrecovery.c	2016-02-15 15:47:06.000000000 -0500
@@ -2348,6 +2348,8 @@ static void dlm_do_local_recovery_cleanu
 						break;
 					}
 				}
+				dlm_lockres_clear_refmap_bit(dlm, res,
+						dead_node);
 				spin_unlock(&res->spinlock);
 				continue;
 			}
diff -druNp --no-dereference linux-libre-3.18.26-gnu/fs/ocfs2/dlmglue.c linux-libre-3.18.27-gnu/fs/ocfs2/dlmglue.c
--- linux-libre-3.18.26-gnu/fs/ocfs2/dlmglue.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/fs/ocfs2/dlmglue.c	2016-02-15 15:47:06.000000000 -0500
@@ -1373,6 +1373,7 @@ static int __ocfs2_cluster_lock(struct o
 	unsigned long flags;
 	unsigned int gen;
 	int noqueue_attempted = 0;
+	int kick_dc = 0;
 
 	ocfs2_init_mask_waiter(&mw);
 
@@ -1501,7 +1502,12 @@ update_holders:
 unlock:
 	lockres_clear_flags(lockres, OCFS2_LOCK_UPCONVERT_FINISHING);
 
+	/* ocfs2_unblock_lock reques on seeing OCFS2_LOCK_UPCONVERT_FINISHING */
+	kick_dc = (lockres->l_flags & OCFS2_LOCK_BLOCKED);
+
 	spin_unlock_irqrestore(&lockres->l_lock, flags);
+	if (kick_dc)
+		ocfs2_wake_downconvert_thread(osb);
 out:
 	/*
 	 * This is helping work around a lock inversion between the page lock
diff -druNp --no-dereference linux-libre-3.18.26-gnu/fs/overlayfs/copy_up.c linux-libre-3.18.27-gnu/fs/overlayfs/copy_up.c
--- linux-libre-3.18.26-gnu/fs/overlayfs/copy_up.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/fs/overlayfs/copy_up.c	2016-02-15 15:47:06.000000000 -0500
@@ -22,9 +22,9 @@
 
 int ovl_copy_xattr(struct dentry *old, struct dentry *new)
 {
-	ssize_t list_size, size;
-	char *buf, *name, *value;
-	int error;
+	ssize_t list_size, size, value_size = 0;
+	char *buf, *name, *value = NULL;
+	int uninitialized_var(error);
 
 	if (!old->d_inode->i_op->getxattr ||
 	    !new->d_inode->i_op->getxattr)
@@ -41,29 +41,40 @@ int ovl_copy_xattr(struct dentry *old, s
 	if (!buf)
 		return -ENOMEM;
 
-	error = -ENOMEM;
-	value = kmalloc(XATTR_SIZE_MAX, GFP_KERNEL);
-	if (!value)
-		goto out;
-
 	list_size = vfs_listxattr(old, buf, list_size);
 	if (list_size <= 0) {
 		error = list_size;
-		goto out_free_value;
+		goto out;
 	}
 
 	for (name = buf; name < (buf + list_size); name += strlen(name) + 1) {
-		size = vfs_getxattr(old, name, value, XATTR_SIZE_MAX);
-		if (size <= 0) {
+retry:
+		size = vfs_getxattr(old, name, value, value_size);
+		if (size == -ERANGE)
+			size = vfs_getxattr(old, name, NULL, 0);
+
+		if (size < 0) {
 			error = size;
-			goto out_free_value;
+			break;
+		}
+
+		if (size > value_size) {
+			void *new;
+
+			new = krealloc(value, size, GFP_KERNEL);
+			if (!new) {
+				error = -ENOMEM;
+				break;
+			}
+			value = new;
+			value_size = size;
+			goto retry;
 		}
+
 		error = vfs_setxattr(new, name, value, size, 0);
 		if (error)
-			goto out_free_value;
+			break;
 	}
-
-out_free_value:
 	kfree(value);
 out:
 	kfree(buf);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/fs/overlayfs/readdir.c linux-libre-3.18.27-gnu/fs/overlayfs/readdir.c
--- linux-libre-3.18.26-gnu/fs/overlayfs/readdir.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/fs/overlayfs/readdir.c	2016-02-15 15:47:06.000000000 -0500
@@ -579,7 +579,8 @@ void ovl_cleanup_whiteouts(struct dentry
 			       (int) PTR_ERR(dentry));
 			continue;
 		}
-		ovl_cleanup(upper->d_inode, dentry);
+		if (dentry->d_inode)
+			ovl_cleanup(upper->d_inode, dentry);
 		dput(dentry);
 	}
 	mutex_unlock(&upper->d_inode->i_mutex);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/fs/overlayfs/super.c linux-libre-3.18.27-gnu/fs/overlayfs/super.c
--- linux-libre-3.18.26-gnu/fs/overlayfs/super.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/fs/overlayfs/super.c	2016-02-15 15:47:06.000000000 -0500
@@ -776,6 +776,9 @@ static int ovl_fill_super(struct super_b
 
 	root_dentry->d_fsdata = oe;
 
+	ovl_copyattr(ovl_dentry_real(root_dentry)->d_inode,
+		     root_dentry->d_inode);
+
 	sb->s_magic = OVERLAYFS_SUPER_MAGIC;
 	sb->s_op = &ovl_super_operations;
 	sb->s_root = root_dentry;
diff -druNp --no-dereference linux-libre-3.18.26-gnu/fs/udf/inode.c linux-libre-3.18.27-gnu/fs/udf/inode.c
--- linux-libre-3.18.26-gnu/fs/udf/inode.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/fs/udf/inode.c	2016-02-15 15:47:06.000000000 -0500
@@ -2054,14 +2054,29 @@ void udf_write_aext(struct inode *inode,
 		epos->offset += adsize;
 }
 
+/*
+ * Only 1 indirect extent in a row really makes sense but allow upto 16 in case
+ * someone does some weird stuff.
+ */
+#define UDF_MAX_INDIR_EXTS 16
+
 int8_t udf_next_aext(struct inode *inode, struct extent_position *epos,
 		     struct kernel_lb_addr *eloc, uint32_t *elen, int inc)
 {
 	int8_t etype;
+	unsigned int indirections = 0;
 
 	while ((etype = udf_current_aext(inode, epos, eloc, elen, inc)) ==
 	       (EXT_NEXT_EXTENT_ALLOCDECS >> 30)) {
 		int block;
+
+		if (++indirections > UDF_MAX_INDIR_EXTS) {
+			udf_err(inode->i_sb,
+				"too many indirect extents in inode %lu\n",
+				inode->i_ino);
+			return -1;
+		}
+
 		epos->block = *eloc;
 		epos->offset = sizeof(struct allocExtDesc);
 		brelse(epos->bh);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/fs/udf/unicode.c linux-libre-3.18.27-gnu/fs/udf/unicode.c
--- linux-libre-3.18.26-gnu/fs/udf/unicode.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/fs/udf/unicode.c	2016-02-15 15:47:06.000000000 -0500
@@ -133,11 +133,15 @@ int udf_CS0toUTF8(struct ustr *utf_o, co
 		if (c < 0x80U)
 			utf_o->u_name[utf_o->u_len++] = (uint8_t)c;
 		else if (c < 0x800U) {
+			if (utf_o->u_len > (UDF_NAME_LEN - 4))
+				break;
 			utf_o->u_name[utf_o->u_len++] =
 						(uint8_t)(0xc0 | (c >> 6));
 			utf_o->u_name[utf_o->u_len++] =
 						(uint8_t)(0x80 | (c & 0x3f));
 		} else {
+			if (utf_o->u_len > (UDF_NAME_LEN - 5))
+				break;
 			utf_o->u_name[utf_o->u_len++] =
 						(uint8_t)(0xe0 | (c >> 12));
 			utf_o->u_name[utf_o->u_len++] =
@@ -178,17 +182,22 @@ int udf_CS0toUTF8(struct ustr *utf_o, co
 static int udf_UTF8toCS0(dstring *ocu, struct ustr *utf, int length)
 {
 	unsigned c, i, max_val, utf_char;
-	int utf_cnt, u_len;
+	int utf_cnt, u_len, u_ch;
 
 	memset(ocu, 0, sizeof(dstring) * length);
 	ocu[0] = 8;
 	max_val = 0xffU;
+	u_ch = 1;
 
 try_again:
 	u_len = 0U;
 	utf_char = 0U;
 	utf_cnt = 0U;
 	for (i = 0U; i < utf->u_len; i++) {
+		/* Name didn't fit? */
+		if (u_len + 1 + u_ch >= length)
+			return 0;
+
 		c = (uint8_t)utf->u_name[i];
 
 		/* Complete a multi-byte UTF-8 character */
@@ -230,6 +239,7 @@ try_again:
 			if (max_val == 0xffU) {
 				max_val = 0xffffU;
 				ocu[0] = (uint8_t)0x10U;
+				u_ch = 2;
 				goto try_again;
 			}
 			goto error_out;
@@ -282,7 +292,7 @@ static int udf_CS0toNLS(struct nls_table
 			c = (c << 8) | ocu[i++];
 
 		len = nls->uni2char(c, &utf_o->u_name[utf_o->u_len],
-				    UDF_NAME_LEN - utf_o->u_len);
+				    UDF_NAME_LEN - 2 - utf_o->u_len);
 		/* Valid character? */
 		if (len >= 0)
 			utf_o->u_len += len;
@@ -300,15 +310,19 @@ static int udf_NLStoCS0(struct nls_table
 	int len;
 	unsigned i, max_val;
 	uint16_t uni_char;
-	int u_len;
+	int u_len, u_ch;
 
 	memset(ocu, 0, sizeof(dstring) * length);
 	ocu[0] = 8;
 	max_val = 0xffU;
+	u_ch = 1;
 
 try_again:
 	u_len = 0U;
 	for (i = 0U; i < uni->u_len; i++) {
+		/* Name didn't fit? */
+		if (u_len + 1 + u_ch >= length)
+			return 0;
 		len = nls->char2uni(&uni->u_name[i], uni->u_len - i, &uni_char);
 		if (!len)
 			continue;
@@ -321,6 +335,7 @@ try_again:
 		if (uni_char > max_val) {
 			max_val = 0xffffU;
 			ocu[0] = (uint8_t)0x10U;
+			u_ch = 2;
 			goto try_again;
 		}
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/fs/xfs/libxfs/xfs_dquot_buf.c linux-libre-3.18.27-gnu/fs/xfs/libxfs/xfs_dquot_buf.c
--- linux-libre-3.18.26-gnu/fs/xfs/libxfs/xfs_dquot_buf.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/fs/xfs/libxfs/xfs_dquot_buf.c	2016-02-15 15:47:06.000000000 -0500
@@ -56,7 +56,7 @@ xfs_dqcheck(
 	xfs_dqid_t	 id,
 	uint		 type,	  /* used only when IO_dorepair is true */
 	uint		 flags,
-	char		 *str)
+	const char	 *str)
 {
 	xfs_dqblk_t	 *d = (xfs_dqblk_t *)ddq;
 	int		errs = 0;
@@ -209,7 +209,8 @@ xfs_dquot_buf_verify_crc(
 STATIC bool
 xfs_dquot_buf_verify(
 	struct xfs_mount	*mp,
-	struct xfs_buf		*bp)
+	struct xfs_buf		*bp,
+	int			warn)
 {
 	struct xfs_dqblk	*d = (struct xfs_dqblk *)bp->b_addr;
 	xfs_dqid_t		id = 0;
@@ -242,8 +243,7 @@ xfs_dquot_buf_verify(
 		if (i == 0)
 			id = be32_to_cpu(ddq->d_id);
 
-		error = xfs_dqcheck(mp, ddq, id + i, 0, XFS_QMOPT_DOWARN,
-				       "xfs_dquot_buf_verify");
+		error = xfs_dqcheck(mp, ddq, id + i, 0, warn, __func__);
 		if (error)
 			return false;
 	}
@@ -258,7 +258,7 @@ xfs_dquot_buf_read_verify(
 
 	if (!xfs_dquot_buf_verify_crc(mp, bp))
 		xfs_buf_ioerror(bp, -EFSBADCRC);
-	else if (!xfs_dquot_buf_verify(mp, bp))
+	else if (!xfs_dquot_buf_verify(mp, bp, XFS_QMOPT_DOWARN))
 		xfs_buf_ioerror(bp, -EFSCORRUPTED);
 
 	if (bp->b_error)
@@ -266,6 +266,25 @@ xfs_dquot_buf_read_verify(
 }
 
 /*
+ * readahead errors are silent and simply leave the buffer as !done so a real
+ * read will then be run with the xfs_dquot_buf_ops verifier. See
+ * xfs_inode_buf_verify() for why we use EIO and ~XBF_DONE here rather than
+ * reporting the failure.
+ */
+static void
+xfs_dquot_buf_readahead_verify(
+	struct xfs_buf	*bp)
+{
+	struct xfs_mount	*mp = bp->b_target->bt_mount;
+
+	if (!xfs_dquot_buf_verify_crc(mp, bp) ||
+	    !xfs_dquot_buf_verify(mp, bp, 0)) {
+		xfs_buf_ioerror(bp, -EIO);
+		bp->b_flags &= ~XBF_DONE;
+	}
+}
+
+/*
  * we don't calculate the CRC here as that is done when the dquot is flushed to
  * the buffer after the update is done. This ensures that the dquot in the
  * buffer always has an up-to-date CRC value.
@@ -276,7 +295,7 @@ xfs_dquot_buf_write_verify(
 {
 	struct xfs_mount	*mp = bp->b_target->bt_mount;
 
-	if (!xfs_dquot_buf_verify(mp, bp)) {
+	if (!xfs_dquot_buf_verify(mp, bp, XFS_QMOPT_DOWARN)) {
 		xfs_buf_ioerror(bp, -EFSCORRUPTED);
 		xfs_verifier_error(bp);
 		return;
@@ -288,3 +307,7 @@ const struct xfs_buf_ops xfs_dquot_buf_o
 	.verify_write = xfs_dquot_buf_write_verify,
 };
 
+const struct xfs_buf_ops xfs_dquot_buf_ra_ops = {
+	.verify_read = xfs_dquot_buf_readahead_verify,
+	.verify_write = xfs_dquot_buf_write_verify,
+};
diff -druNp --no-dereference linux-libre-3.18.26-gnu/fs/xfs/libxfs/xfs_inode_buf.c linux-libre-3.18.27-gnu/fs/xfs/libxfs/xfs_inode_buf.c
--- linux-libre-3.18.26-gnu/fs/xfs/libxfs/xfs_inode_buf.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/fs/xfs/libxfs/xfs_inode_buf.c	2016-02-15 15:47:06.000000000 -0500
@@ -66,11 +66,14 @@ xfs_inobp_check(
  * has not had the inode cores stamped into it. Hence for readahead, the buffer
  * may be potentially invalid.
  *
- * If the readahead buffer is invalid, we don't want to mark it with an error,
- * but we do want to clear the DONE status of the buffer so that a followup read
- * will re-read it from disk. This will ensure that we don't get an unnecessary
- * warnings during log recovery and we don't get unnecssary panics on debug
- * kernels.
+ * If the readahead buffer is invalid, we need to mark it with an error and
+ * clear the DONE status of the buffer so that a followup read will re-read it
+ * from disk. We don't report the error otherwise to avoid warnings during log
+ * recovery and we don't get unnecssary panics on debug kernels. We use EIO here
+ * because all we want to do is say readahead failed; there is no-one to report
+ * the error to, so this will distinguish it from a non-ra verifier failure.
+ * Changes to this readahead error behavour also need to be reflected in
+ * xfs_dquot_buf_readahead_verify().
  */
 static void
 xfs_inode_buf_verify(
@@ -98,6 +101,7 @@ xfs_inode_buf_verify(
 						XFS_RANDOM_ITOBP_INOTOBP))) {
 			if (readahead) {
 				bp->b_flags &= ~XBF_DONE;
+				xfs_buf_ioerror(bp, -EIO);
 				return;
 			}
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/fs/xfs/libxfs/xfs_quota_defs.h linux-libre-3.18.27-gnu/fs/xfs/libxfs/xfs_quota_defs.h
--- linux-libre-3.18.26-gnu/fs/xfs/libxfs/xfs_quota_defs.h	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/fs/xfs/libxfs/xfs_quota_defs.h	2016-02-15 15:47:06.000000000 -0500
@@ -153,7 +153,7 @@ typedef __uint16_t	xfs_qwarncnt_t;
 #define XFS_QMOPT_RESBLK_MASK	(XFS_QMOPT_RES_REGBLKS | XFS_QMOPT_RES_RTBLKS)
 
 extern int xfs_dqcheck(struct xfs_mount *mp, xfs_disk_dquot_t *ddq,
-		       xfs_dqid_t id, uint type, uint flags, char *str);
+		       xfs_dqid_t id, uint type, uint flags, const char *str);
 extern int xfs_calc_dquots_per_chunk(unsigned int nbblks);
 
 #endif	/* __XFS_QUOTA_H__ */
diff -druNp --no-dereference linux-libre-3.18.26-gnu/fs/xfs/libxfs/xfs_shared.h linux-libre-3.18.27-gnu/fs/xfs/libxfs/xfs_shared.h
--- linux-libre-3.18.26-gnu/fs/xfs/libxfs/xfs_shared.h	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/fs/xfs/libxfs/xfs_shared.h	2016-02-15 15:47:06.000000000 -0500
@@ -49,6 +49,7 @@ extern const struct xfs_buf_ops xfs_inob
 extern const struct xfs_buf_ops xfs_inode_buf_ops;
 extern const struct xfs_buf_ops xfs_inode_buf_ra_ops;
 extern const struct xfs_buf_ops xfs_dquot_buf_ops;
+extern const struct xfs_buf_ops xfs_dquot_buf_ra_ops;
 extern const struct xfs_buf_ops xfs_sb_buf_ops;
 extern const struct xfs_buf_ops xfs_sb_quiet_buf_ops;
 extern const struct xfs_buf_ops xfs_symlink_buf_ops;
diff -druNp --no-dereference linux-libre-3.18.26-gnu/fs/xfs/xfs_buf.c linux-libre-3.18.27-gnu/fs/xfs/xfs_buf.c
--- linux-libre-3.18.26-gnu/fs/xfs/xfs_buf.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/fs/xfs/xfs_buf.c	2016-02-15 15:47:06.000000000 -0500
@@ -607,6 +607,13 @@ found:
 		}
 	}
 
+	/*
+	 * Clear b_error if this is a lookup from a caller that doesn't expect
+	 * valid data to be found in the buffer.
+	 */
+	if (!(flags & XBF_READ))
+		xfs_buf_ioerror(bp, 0);
+
 	XFS_STATS_INC(xb_get);
 	trace_xfs_buf_get(bp, flags, _RET_IP_);
 	return bp;
diff -druNp --no-dereference linux-libre-3.18.26-gnu/fs/xfs/xfs_log_recover.c linux-libre-3.18.27-gnu/fs/xfs/xfs_log_recover.c
--- linux-libre-3.18.26-gnu/fs/xfs/xfs_log_recover.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/fs/xfs/xfs_log_recover.c	2016-02-15 15:47:06.000000000 -0500
@@ -3151,6 +3151,7 @@ xlog_recover_dquot_ra_pass2(
 	struct xfs_disk_dquot	*recddq;
 	struct xfs_dq_logformat	*dq_f;
 	uint			type;
+	int			len;
 
 
 	if (mp->m_qflags == 0)
@@ -3171,8 +3172,12 @@ xlog_recover_dquot_ra_pass2(
 	ASSERT(dq_f);
 	ASSERT(dq_f->qlf_len == 1);
 
-	xfs_buf_readahead(mp->m_ddev_targp, dq_f->qlf_blkno,
-			  XFS_FSB_TO_BB(mp, dq_f->qlf_len), NULL);
+	len = XFS_FSB_TO_BB(mp, dq_f->qlf_len);
+	if (xlog_peek_buffer_cancelled(log, dq_f->qlf_blkno, len, 0))
+		return;
+
+	xfs_buf_readahead(mp->m_ddev_targp, dq_f->qlf_blkno, len,
+			  &xfs_dquot_buf_ra_ops);
 }
 
 STATIC void
diff -druNp --no-dereference linux-libre-3.18.26-gnu/include/crypto/hash.h linux-libre-3.18.27-gnu/include/crypto/hash.h
--- linux-libre-3.18.26-gnu/include/crypto/hash.h	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/include/crypto/hash.h	2016-02-15 15:47:06.000000000 -0500
@@ -99,6 +99,7 @@ struct crypto_ahash {
 		      unsigned int keylen);
 
 	unsigned int reqsize;
+	bool has_setkey;
 	struct crypto_tfm base;
 };
 
@@ -186,6 +187,12 @@ static inline void *ahash_request_ctx(st
 
 int crypto_ahash_setkey(struct crypto_ahash *tfm, const u8 *key,
 			unsigned int keylen);
+
+static inline bool crypto_ahash_has_setkey(struct crypto_ahash *tfm)
+{
+	return tfm->has_setkey;
+}
+
 int crypto_ahash_finup(struct ahash_request *req);
 int crypto_ahash_final(struct ahash_request *req);
 int crypto_ahash_digest(struct ahash_request *req);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/include/crypto/if_alg.h linux-libre-3.18.27-gnu/include/crypto/if_alg.h
--- linux-libre-3.18.26-gnu/include/crypto/if_alg.h	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/include/crypto/if_alg.h	2016-02-15 15:47:06.000000000 -0500
@@ -30,6 +30,9 @@ struct alg_sock {
 
 	struct sock *parent;
 
+	unsigned int refcnt;
+	unsigned int nokey_refcnt;
+
 	const struct af_alg_type *type;
 	void *private;
 };
@@ -49,8 +52,10 @@ struct af_alg_type {
 	void (*release)(void *private);
 	int (*setkey)(void *private, const u8 *key, unsigned int keylen);
 	int (*accept)(void *private, struct sock *sk);
+	int (*accept_nokey)(void *private, struct sock *sk);
 
 	struct proto_ops *ops;
+	struct proto_ops *ops_nokey;
 	struct module *owner;
 	char name[14];
 };
@@ -64,6 +69,7 @@ int af_alg_register_type(const struct af
 int af_alg_unregister_type(const struct af_alg_type *type);
 
 int af_alg_release(struct socket *sock);
+void af_alg_release_parent(struct sock *sk);
 int af_alg_accept(struct sock *sk, struct socket *newsock);
 
 int af_alg_make_sg(struct af_alg_sgl *sgl, void __user *addr, int len,
@@ -80,11 +86,6 @@ static inline struct alg_sock *alg_sk(st
 	return (struct alg_sock *)sk;
 }
 
-static inline void af_alg_release_parent(struct sock *sk)
-{
-	sock_put(alg_sk(sk)->parent);
-}
-
 static inline void af_alg_init_completion(struct af_alg_completion *completion)
 {
 	init_completion(&completion->completion);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/include/drm/drm_cache.h linux-libre-3.18.27-gnu/include/drm/drm_cache.h
--- linux-libre-3.18.26-gnu/include/drm/drm_cache.h	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/include/drm/drm_cache.h	2016-02-15 15:47:06.000000000 -0500
@@ -35,4 +35,13 @@
 
 void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
 
+static inline bool drm_arch_can_wc_memory(void)
+{
+#if defined(CONFIG_PPC) && !defined(CONFIG_NOT_COHERENT_CACHE)
+	return false;
+#else
+	return true;
+#endif
+}
+
 #endif
diff -druNp --no-dereference linux-libre-3.18.26-gnu/include/drm/drm_fixed.h linux-libre-3.18.27-gnu/include/drm/drm_fixed.h
--- linux-libre-3.18.26-gnu/include/drm/drm_fixed.h	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/include/drm/drm_fixed.h	2016-02-15 15:47:06.000000000 -0500
@@ -73,18 +73,28 @@ static inline u32 dfixed_div(fixed20_12
 #define DRM_FIXED_ONE		(1ULL << DRM_FIXED_POINT)
 #define DRM_FIXED_DECIMAL_MASK	(DRM_FIXED_ONE - 1)
 #define DRM_FIXED_DIGITS_MASK	(~DRM_FIXED_DECIMAL_MASK)
+#define DRM_FIXED_EPSILON	1LL
+#define DRM_FIXED_ALMOST_ONE	(DRM_FIXED_ONE - DRM_FIXED_EPSILON)
 
 static inline s64 drm_int2fixp(int a)
 {
 	return ((s64)a) << DRM_FIXED_POINT;
 }
 
-static inline int drm_fixp2int(int64_t a)
+static inline int drm_fixp2int(s64 a)
 {
 	return ((s64)a) >> DRM_FIXED_POINT;
 }
 
-static inline unsigned drm_fixp_msbset(int64_t a)
+static inline int drm_fixp2int_ceil(s64 a)
+{
+	if (a > 0)
+		return drm_fixp2int(a + DRM_FIXED_ALMOST_ONE);
+	else
+		return drm_fixp2int(a - DRM_FIXED_ALMOST_ONE);
+}
+
+static inline unsigned drm_fixp_msbset(s64 a)
 {
 	unsigned shift, sign = (a >> 63) & 1;
 
@@ -136,6 +146,45 @@ static inline s64 drm_fixp_div(s64 a, s6
 	return result;
 }
 
+static inline s64 drm_fixp_from_fraction(s64 a, s64 b)
+{
+	s64 res;
+	bool a_neg = a < 0;
+	bool b_neg = b < 0;
+	u64 a_abs = a_neg ? -a : a;
+	u64 b_abs = b_neg ? -b : b;
+	u64 rem;
+
+	/* determine integer part */
+	u64 res_abs  = div64_u64_rem(a_abs, b_abs, &rem);
+
+	/* determine fractional part */
+	{
+		u32 i = DRM_FIXED_POINT;
+
+		do {
+			rem <<= 1;
+			res_abs <<= 1;
+			if (rem >= b_abs) {
+				res_abs |= 1;
+				rem -= b_abs;
+			}
+		} while (--i != 0);
+	}
+
+	/* round up LSB */
+	{
+		u64 summand = (rem << 1) >= b_abs;
+
+		res_abs += summand;
+	}
+
+	res = (s64) res_abs;
+	if (a_neg ^ b_neg)
+		res = -res;
+	return res;
+}
+
 static inline s64 drm_fixp_exp(s64 x)
 {
 	s64 tolerance = div64_s64(DRM_FIXED_ONE, 1000000);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/include/linux/console.h linux-libre-3.18.27-gnu/include/linux/console.h
--- linux-libre-3.18.26-gnu/include/linux/console.h	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/include/linux/console.h	2016-02-15 15:47:06.000000000 -0500
@@ -150,6 +150,7 @@ extern int console_trylock(void);
 extern void console_unlock(void);
 extern void console_conditional_schedule(void);
 extern void console_unblank(void);
+extern void console_flush_on_panic(void);
 extern struct tty_driver *console_device(int *);
 extern void console_stop(struct console *);
 extern void console_start(struct console *);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/include/linux/filter.h linux-libre-3.18.27-gnu/include/linux/filter.h
--- linux-libre-3.18.26-gnu/include/linux/filter.h	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/include/linux/filter.h	2016-02-15 15:47:06.000000000 -0500
@@ -427,6 +427,25 @@ static inline void bpf_jit_free(struct b
 
 #define BPF_ANC		BIT(15)
 
+static inline bool bpf_needs_clear_a(const struct sock_filter *first)
+{
+	switch (first->code) {
+	case BPF_RET | BPF_K:
+	case BPF_LD | BPF_W | BPF_LEN:
+		return false;
+
+	case BPF_LD | BPF_W | BPF_ABS:
+	case BPF_LD | BPF_H | BPF_ABS:
+	case BPF_LD | BPF_B | BPF_ABS:
+		if (first->k == SKF_AD_OFF + SKF_AD_ALU_XOR_X)
+			return true;
+		return false;
+
+	default:
+		return true;
+	}
+}
+
 static inline u16 bpf_anc_helper(const struct sock_filter *ftest)
 {
 	BUG_ON(ftest->code & BPF_ANC);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/include/linux/fs.h linux-libre-3.18.27-gnu/include/linux/fs.h
--- linux-libre-3.18.26-gnu/include/linux/fs.h	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/include/linux/fs.h	2016-02-15 15:47:06.000000000 -0500
@@ -906,12 +906,11 @@ int locks_in_grace(struct net *);
  * FIXME: should we create a separate "struct lock_request" to help distinguish
  * these two uses?
  *
- * The i_flock list is ordered by:
+ * The varous i_flctx lists are ordered by:
  *
- * 1) lock type -- FL_LEASEs first, then FL_FLOCK, and finally FL_POSIX
- * 2) lock owner
- * 3) lock range start
- * 4) lock range end
+ * 1) lock owner
+ * 2) lock range start
+ * 3) lock range end
  *
  * Obviously, the last two criteria only matter for POSIX locks.
  */
@@ -1946,8 +1945,9 @@ static inline int break_lease(struct ino
 {
 	/*
 	 * Since this check is lockless, we must ensure that any refcounts
-	 * taken are done before checking inode->i_flock. Otherwise, we could
-	 * end up racing with tasks trying to set a new lease on this file.
+	 * taken are done before checking i_flctx->flc_lease. Otherwise, we
+	 * could end up racing with tasks trying to set a new lease on this
+	 * file.
 	 */
 	smp_mb();
 	if (inode->i_flock)
@@ -1959,8 +1959,9 @@ static inline int break_deleg(struct ino
 {
 	/*
 	 * Since this check is lockless, we must ensure that any refcounts
-	 * taken are done before checking inode->i_flock. Otherwise, we could
-	 * end up racing with tasks trying to set a new lease on this file.
+	 * taken are done before checking i_flctx->flc_lease. Otherwise, we
+	 * could end up racing with tasks trying to set a new lease on this
+	 * file.
 	 */
 	smp_mb();
 	if (inode->i_flock)
diff -druNp --no-dereference linux-libre-3.18.26-gnu/include/linux/nfs_fs_sb.h linux-libre-3.18.27-gnu/include/linux/nfs_fs_sb.h
--- linux-libre-3.18.26-gnu/include/linux/nfs_fs_sb.h	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/include/linux/nfs_fs_sb.h	2016-02-15 15:47:06.000000000 -0500
@@ -216,7 +216,7 @@ struct nfs_server {
 #define NFS_CAP_SYMLINKS	(1U << 2)
 #define NFS_CAP_ACLS		(1U << 3)
 #define NFS_CAP_ATOMIC_OPEN	(1U << 4)
-#define NFS_CAP_CHANGE_ATTR	(1U << 5)
+/* #define NFS_CAP_CHANGE_ATTR	(1U << 5) */
 #define NFS_CAP_FILEID		(1U << 6)
 #define NFS_CAP_MODE		(1U << 7)
 #define NFS_CAP_NLINK		(1U << 8)
diff -druNp --no-dereference linux-libre-3.18.26-gnu/include/linux/radix-tree.h linux-libre-3.18.27-gnu/include/linux/radix-tree.h
--- linux-libre-3.18.26-gnu/include/linux/radix-tree.h	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/include/linux/radix-tree.h	2016-02-15 15:47:06.000000000 -0500
@@ -370,12 +370,28 @@ void **radix_tree_next_chunk(struct radi
 			     struct radix_tree_iter *iter, unsigned flags);
 
 /**
+ * radix_tree_iter_retry - retry this chunk of the iteration
+ * @iter:	iterator state
+ *
+ * If we iterate over a tree protected only by the RCU lock, a race
+ * against deletion or creation may result in seeing a slot for which
+ * radix_tree_deref_retry() returns true.  If so, call this function
+ * and continue the iteration.
+ */
+static inline __must_check
+void **radix_tree_iter_retry(struct radix_tree_iter *iter)
+{
+	iter->next_index = iter->index;
+	return NULL;
+}
+
+/**
  * radix_tree_chunk_size - get current chunk size
  *
  * @iter:	pointer to radix tree iterator
  * Returns:	current chunk size
  */
-static __always_inline unsigned
+static __always_inline long
 radix_tree_chunk_size(struct radix_tree_iter *iter)
 {
 	return iter->next_index - iter->index;
@@ -409,9 +425,9 @@ radix_tree_next_slot(void **slot, struct
 			return slot + offset + 1;
 		}
 	} else {
-		unsigned size = radix_tree_chunk_size(iter) - 1;
+		long size = radix_tree_chunk_size(iter);
 
-		while (size--) {
+		while (--size > 0) {
 			slot++;
 			iter->index++;
 			if (likely(*slot))
diff -druNp --no-dereference linux-libre-3.18.26-gnu/include/linux/rmap.h linux-libre-3.18.27-gnu/include/linux/rmap.h
--- linux-libre-3.18.26-gnu/include/linux/rmap.h	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/include/linux/rmap.h	2016-02-15 15:47:06.000000000 -0500
@@ -113,20 +113,6 @@ static inline struct anon_vma *page_anon
 	return page_rmapping(page);
 }
 
-static inline void vma_lock_anon_vma(struct vm_area_struct *vma)
-{
-	struct anon_vma *anon_vma = vma->anon_vma;
-	if (anon_vma)
-		down_write(&anon_vma->root->rwsem);
-}
-
-static inline void vma_unlock_anon_vma(struct vm_area_struct *vma)
-{
-	struct anon_vma *anon_vma = vma->anon_vma;
-	if (anon_vma)
-		up_write(&anon_vma->root->rwsem);
-}
-
 static inline void anon_vma_lock_write(struct anon_vma *anon_vma)
 {
 	down_write(&anon_vma->root->rwsem);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/include/linux/sched.h linux-libre-3.18.27-gnu/include/linux/sched.h
--- linux-libre-3.18.26-gnu/include/linux/sched.h	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/include/linux/sched.h	2016-02-15 15:47:06.000000000 -0500
@@ -758,6 +758,7 @@ struct user_struct {
 	unsigned long mq_bytes;	/* How many bytes can be allocated to mqueue? */
 #endif
 	unsigned long locked_shm; /* How many pages of mlocked shm ? */
+	unsigned long unix_inflight;	/* How many files in flight in unix sockets */
 
 #ifdef CONFIG_KEYS
 	struct key *uid_keyring;	/* UID specific keyring */
diff -druNp --no-dereference linux-libre-3.18.26-gnu/include/linux/thermal.h linux-libre-3.18.27-gnu/include/linux/thermal.h
--- linux-libre-3.18.26-gnu/include/linux/thermal.h	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/include/linux/thermal.h	2016-02-15 15:47:06.000000000 -0500
@@ -40,6 +40,9 @@
 /* No upper/lower limit requirement */
 #define THERMAL_NO_LIMIT	THERMAL_CSTATE_INVALID
 
+/* use value, which < 0K, to indicate an invalid/uninitialized temperature */
+#define THERMAL_TEMP_INVALID	-274000
+
 /* Unit conversion macros */
 #define KELVIN_TO_CELSIUS(t)	(long)(((long)t-2732 >= 0) ?	\
 				((long)t-2732+5)/10 : ((long)t-2732-5)/10)
@@ -188,6 +191,7 @@ struct thermal_attr {
  * @forced_passive:	If > 0, temperature at which to switch on all ACPI
  *			processor cooling devices.  Currently only used by the
  *			step-wise governor.
+ * @need_update:	if equals 1, thermal_zone_device_update needs to be invoked.
  * @ops:	operations this &thermal_zone_device supports
  * @tzp:	thermal zone parameters
  * @governor:	pointer to the governor for this thermal zone
@@ -214,6 +218,7 @@ struct thermal_zone_device {
 	int emul_temperature;
 	int passive;
 	unsigned int forced_passive;
+	atomic_t need_update;
 	struct thermal_zone_device_ops *ops;
 	const struct thermal_zone_params *tzp;
 	struct thermal_governor *governor;
diff -druNp --no-dereference linux-libre-3.18.26-gnu/include/net/inet_ecn.h linux-libre-3.18.27-gnu/include/net/inet_ecn.h
--- linux-libre-3.18.26-gnu/include/net/inet_ecn.h	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/include/net/inet_ecn.h	2016-02-15 15:47:06.000000000 -0500
@@ -111,11 +111,24 @@ static inline void ipv4_copy_dscp(unsign
 
 struct ipv6hdr;
 
-static inline int IP6_ECN_set_ce(struct ipv6hdr *iph)
+/* Note:
+ * IP_ECN_set_ce() has to tweak IPV4 checksum when setting CE,
+ * meaning both changes have no effect on skb->csum if/when CHECKSUM_COMPLETE
+ * In IPv6 case, no checksum compensates the change in IPv6 header,
+ * so we have to update skb->csum.
+ */
+static inline int IP6_ECN_set_ce(struct sk_buff *skb, struct ipv6hdr *iph)
 {
+	__be32 from, to;
+
 	if (INET_ECN_is_not_ect(ipv6_get_dsfield(iph)))
 		return 0;
-	*(__be32*)iph |= htonl(INET_ECN_CE << 20);
+
+	from = *(__be32 *)iph;
+	to = from | htonl(INET_ECN_CE << 20);
+	*(__be32 *)iph = to;
+	if (skb->ip_summed == CHECKSUM_COMPLETE)
+		skb->csum = csum_add(csum_sub(skb->csum, from), to);
 	return 1;
 }
 
@@ -142,7 +155,7 @@ static inline int INET_ECN_set_ce(struct
 	case cpu_to_be16(ETH_P_IPV6):
 		if (skb_network_header(skb) + sizeof(struct ipv6hdr) <=
 		    skb_tail_pointer(skb))
-			return IP6_ECN_set_ce(ipv6_hdr(skb));
+			return IP6_ECN_set_ce(skb, ipv6_hdr(skb));
 		break;
 	}
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/include/net/mac802154.h linux-libre-3.18.27-gnu/include/net/mac802154.h
--- linux-libre-3.18.26-gnu/include/net/mac802154.h	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/include/net/mac802154.h	2016-02-15 15:47:06.000000000 -0500
@@ -35,13 +35,13 @@
  */
 
 /* indicates that the Short Address changed */
-#define IEEE802515_AFILT_SADDR_CHANGED		0x00000001
+#define IEEE802154_AFILT_SADDR_CHANGED		0x00000001
 /* indicates that the IEEE Address changed */
-#define IEEE802515_AFILT_IEEEADDR_CHANGED	0x00000002
+#define IEEE802154_AFILT_IEEEADDR_CHANGED	0x00000002
 /* indicates that the PAN ID changed */
-#define IEEE802515_AFILT_PANID_CHANGED		0x00000004
+#define IEEE802154_AFILT_PANID_CHANGED		0x00000004
 /* indicates that PAN Coordinator status changed */
-#define	IEEE802515_AFILT_PANC_CHANGED		0x00000008
+#define IEEE802154_AFILT_PANC_CHANGED		0x00000008
 
 struct ieee802154_hw_addr_filt {
 	__le16	pan_id;		/* Each independent PAN selects a unique
diff -druNp --no-dereference linux-libre-3.18.26-gnu/include/net/vxlan.h linux-libre-3.18.27-gnu/include/net/vxlan.h
--- linux-libre-3.18.26-gnu/include/net/vxlan.h	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/include/net/vxlan.h	2016-02-15 15:47:06.000000000 -0500
@@ -43,6 +43,11 @@ struct vxlan_sock {
 #define VXLAN_F_UDP_ZERO_CSUM6_TX	0x80
 #define VXLAN_F_UDP_ZERO_CSUM6_RX	0x100
 
+/* Flags that are used in the receive path. These flags must match in
+ * order for a socket to be shareable
+ */
+#define VXLAN_F_RCV_FLAGS		VXLAN_F_UDP_ZERO_CSUM6_RX
+					 
 struct vxlan_sock *vxlan_sock_add(struct net *net, __be16 port,
 				  vxlan_rcv_t *rcv, void *data,
 				  bool no_share, u32 flags);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/include/sound/rawmidi.h linux-libre-3.18.27-gnu/include/sound/rawmidi.h
--- linux-libre-3.18.26-gnu/include/sound/rawmidi.h	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/include/sound/rawmidi.h	2016-02-15 15:47:06.000000000 -0500
@@ -165,6 +165,10 @@ int snd_rawmidi_transmit_peek(struct snd
 int snd_rawmidi_transmit_ack(struct snd_rawmidi_substream *substream, int count);
 int snd_rawmidi_transmit(struct snd_rawmidi_substream *substream,
 			 unsigned char *buffer, int count);
+int __snd_rawmidi_transmit_peek(struct snd_rawmidi_substream *substream,
+			      unsigned char *buffer, int count);
+int __snd_rawmidi_transmit_ack(struct snd_rawmidi_substream *substream,
+			       int count);
 
 /* main midi functions */
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/kernel/bpf/verifier.c linux-libre-3.18.27-gnu/kernel/bpf/verifier.c
--- linux-libre-3.18.26-gnu/kernel/bpf/verifier.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/kernel/bpf/verifier.c	2016-02-15 15:47:06.000000000 -0500
@@ -1025,6 +1025,16 @@ static int check_alu_op(struct reg_state
 			return -EINVAL;
 		}
 
+		if ((opcode == BPF_LSH || opcode == BPF_RSH ||
+		     opcode == BPF_ARSH) && BPF_SRC(insn->code) == BPF_K) {
+			int size = BPF_CLASS(insn->code) == BPF_ALU64 ? 64 : 32;
+
+			if (insn->imm < 0 || insn->imm >= size) {
+				verbose("invalid shift %d\n", insn->imm);
+				return -EINVAL;
+			}
+		}
+
 		/* pattern match 'bpf_add Rx, imm' instruction */
 		if (opcode == BPF_ADD && BPF_CLASS(insn->code) == BPF_ALU64 &&
 		    regs[insn->dst_reg].type == FRAME_PTR &&
diff -druNp --no-dereference linux-libre-3.18.26-gnu/kernel/futex.c linux-libre-3.18.27-gnu/kernel/futex.c
--- linux-libre-3.18.26-gnu/kernel/futex.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/kernel/futex.c	2016-02-15 15:47:06.000000000 -0500
@@ -2632,6 +2632,11 @@ static int futex_wait_requeue_pi(u32 __u
 		if (q.pi_state && (q.pi_state->owner != current)) {
 			spin_lock(q.lock_ptr);
 			ret = fixup_pi_state_owner(uaddr2, &q, current);
+			/*
+			 * Drop the reference to the pi state which
+			 * the requeue_pi() code acquired for us.
+			 */
+			free_pi_state(q.pi_state);
 			spin_unlock(q.lock_ptr);
 		}
 	} else {
diff -druNp --no-dereference linux-libre-3.18.26-gnu/kernel/panic.c linux-libre-3.18.27-gnu/kernel/panic.c
--- linux-libre-3.18.26-gnu/kernel/panic.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/kernel/panic.c	2016-02-15 15:47:06.000000000 -0500
@@ -23,6 +23,7 @@
 #include <linux/sysrq.h>
 #include <linux/init.h>
 #include <linux/nmi.h>
+#include <linux/console.h>
 
 #define PANIC_TIMER_STEP 100
 #define PANIC_BLINK_SPD 18
@@ -145,6 +146,17 @@ void panic(const char *fmt, ...)
 
 	bust_spinlocks(0);
 
+	/*
+	 * We may have ended up stopping the CPU holding the lock (in
+	 * smp_send_stop()) while still having some valuable data in the console
+	 * buffer.  Try to acquire the lock then release it regardless of the
+	 * result.  The release will also print the buffers out.  Locks debug
+	 * should be disabled to avoid reporting bad unlock balance when
+	 * panic() is not being callled from OOPS.
+	 */
+	debug_locks_off();
+	console_flush_on_panic();
+
 	if (!panic_blink)
 		panic_blink = no_blink;
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/kernel/printk/printk.c linux-libre-3.18.27-gnu/kernel/printk/printk.c
--- linux-libre-3.18.26-gnu/kernel/printk/printk.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/kernel/printk/printk.c	2016-02-15 15:47:06.000000000 -0500
@@ -2167,13 +2167,24 @@ void console_unlock(void)
 	static u64 seen_seq;
 	unsigned long flags;
 	bool wake_klogd = false;
-	bool retry;
+	bool do_cond_resched, retry;
 
 	if (console_suspended) {
 		up_console_sem();
 		return;
 	}
 
+	/*
+	 * Console drivers are called under logbuf_lock, so
+	 * @console_may_schedule should be cleared before; however, we may
+	 * end up dumping a lot of lines, for example, if called from
+	 * console registration path, and should invoke cond_resched()
+	 * between lines if allowable.  Not doing so can cause a very long
+	 * scheduling stall on a slow console leading to RCU stall and
+	 * softlockup warnings which exacerbate the issue with more
+	 * messages practically incapacitating the system.
+	 */
+	do_cond_resched = console_may_schedule;
 	console_may_schedule = 0;
 
 	/* flush buffered message fragment immediately to console */
@@ -2235,6 +2246,9 @@ skip:
 		call_console_drivers(level, text, len);
 		start_critical_timings();
 		local_irq_restore(flags);
+
+		if (do_cond_resched)
+			cond_resched();
 	}
 	console_locked = 0;
 
@@ -2302,6 +2316,25 @@ void console_unblank(void)
 	console_unlock();
 }
 
+/**
+ * console_flush_on_panic - flush console content on panic
+ *
+ * Immediately output all pending messages no matter what.
+ */
+void console_flush_on_panic(void)
+{
+	/*
+	 * If someone else is holding the console lock, trylock will fail
+	 * and may_schedule may be set.  Ignore and proceed to unlock so
+	 * that messages are flushed out.  As this can be called from any
+	 * context and we don't want to get preempted while flushing,
+	 * ensure may_schedule is cleared.
+	 */
+	console_trylock();
+	console_may_schedule = 0;
+	console_unlock();
+}
+
 /*
  * Return the console tty driver structure and its associated index
  */
diff -druNp --no-dereference linux-libre-3.18.26-gnu/kernel/seccomp.c linux-libre-3.18.27-gnu/kernel/seccomp.c
--- linux-libre-3.18.26-gnu/kernel/seccomp.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/kernel/seccomp.c	2016-02-15 15:47:06.000000000 -0500
@@ -317,24 +317,24 @@ static inline void seccomp_sync_threads(
 		put_seccomp_filter(thread);
 		smp_store_release(&thread->seccomp.filter,
 				  caller->seccomp.filter);
+
+		/*
+		 * Don't let an unprivileged task work around
+		 * the no_new_privs restriction by creating
+		 * a thread that sets it up, enters seccomp,
+		 * then dies.
+		 */
+		if (task_no_new_privs(caller))
+			task_set_no_new_privs(thread);
+
 		/*
 		 * Opt the other thread into seccomp if needed.
 		 * As threads are considered to be trust-realm
 		 * equivalent (see ptrace_may_access), it is safe to
 		 * allow one thread to transition the other.
 		 */
-		if (thread->seccomp.mode == SECCOMP_MODE_DISABLED) {
-			/*
-			 * Don't let an unprivileged task work around
-			 * the no_new_privs restriction by creating
-			 * a thread that sets it up, enters seccomp,
-			 * then dies.
-			 */
-			if (task_no_new_privs(caller))
-				task_set_no_new_privs(thread);
-
+		if (thread->seccomp.mode == SECCOMP_MODE_DISABLED)
 			seccomp_assign_mode(thread, SECCOMP_MODE_FILTER);
-		}
 	}
 }
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/kernel/time/posix-clock.c linux-libre-3.18.27-gnu/kernel/time/posix-clock.c
--- linux-libre-3.18.26-gnu/kernel/time/posix-clock.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/kernel/time/posix-clock.c	2016-02-15 15:47:06.000000000 -0500
@@ -69,10 +69,10 @@ static ssize_t posix_clock_read(struct f
 static unsigned int posix_clock_poll(struct file *fp, poll_table *wait)
 {
 	struct posix_clock *clk = get_posix_clock(fp);
-	int result = 0;
+	unsigned int result = 0;
 
 	if (!clk)
-		return -ENODEV;
+		return POLLERR;
 
 	if (clk->ops.poll)
 		result = clk->ops.poll(clk, fp, wait);
diff -druNp --no-dereference linux-libre-3.18.26-gnu/kernel/time/timekeeping.c linux-libre-3.18.27-gnu/kernel/time/timekeeping.c
--- linux-libre-3.18.26-gnu/kernel/time/timekeeping.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/kernel/time/timekeeping.c	2016-02-15 15:47:06.000000000 -0500
@@ -202,8 +202,7 @@ static inline s64 timekeeping_get_ns(str
 	/* calculate the delta since the last update_wall_time: */
 	delta = clocksource_delta(cycle_now, tkr->cycle_last, tkr->mask);
 
-	nsec = delta * tkr->mult + tkr->xtime_nsec;
-	nsec >>= tkr->shift;
+	nsec = (delta * tkr->mult + tkr->xtime_nsec) >> tkr->shift;
 
 	/* If arch requires, add in get_arch_timeoffset() */
 	return nsec + arch_gettimeoffset();
diff -druNp --no-dereference linux-libre-3.18.26-gnu/lib/dma-debug.c linux-libre-3.18.27-gnu/lib/dma-debug.c
--- linux-libre-3.18.26-gnu/lib/dma-debug.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/lib/dma-debug.c	2016-02-15 15:47:06.000000000 -0500
@@ -1165,7 +1165,7 @@ static inline bool overlap(void *addr, u
 
 static void check_for_illegal_area(struct device *dev, void *addr, unsigned long len)
 {
-	if (overlap(addr, len, _text, _etext) ||
+	if (overlap(addr, len, _stext, _etext) ||
 	    overlap(addr, len, __start_rodata, __end_rodata))
 		err_printk(dev, NULL, "DMA-API: device driver maps memory from kernel text or rodata [addr=%p] [len=%lu]\n", addr, len);
 }
diff -druNp --no-dereference linux-libre-3.18.26-gnu/lib/dump_stack.c linux-libre-3.18.27-gnu/lib/dump_stack.c
--- linux-libre-3.18.26-gnu/lib/dump_stack.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/lib/dump_stack.c	2016-02-15 15:47:06.000000000 -0500
@@ -25,6 +25,7 @@ static atomic_t dump_lock = ATOMIC_INIT(
 
 asmlinkage __visible void dump_stack(void)
 {
+	unsigned long flags;
 	int was_locked;
 	int old;
 	int cpu;
@@ -33,9 +34,8 @@ asmlinkage __visible void dump_stack(voi
 	 * Permit this cpu to perform nested stack dumps while serialising
 	 * against other CPUs
 	 */
-	preempt_disable();
-
 retry:
+	local_irq_save(flags);
 	cpu = smp_processor_id();
 	old = atomic_cmpxchg(&dump_lock, -1, cpu);
 	if (old == -1) {
@@ -43,6 +43,7 @@ retry:
 	} else if (old == cpu) {
 		was_locked = 1;
 	} else {
+		local_irq_restore(flags);
 		cpu_relax();
 		goto retry;
 	}
@@ -52,7 +53,7 @@ retry:
 	if (!was_locked)
 		atomic_set(&dump_lock, -1);
 
-	preempt_enable();
+	local_irq_restore(flags);
 }
 #else
 asmlinkage __visible void dump_stack(void)
diff -druNp --no-dereference linux-libre-3.18.26-gnu/lib/libcrc32c.c linux-libre-3.18.27-gnu/lib/libcrc32c.c
--- linux-libre-3.18.26-gnu/lib/libcrc32c.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/lib/libcrc32c.c	2016-02-15 15:47:06.000000000 -0500
@@ -74,3 +74,4 @@ module_exit(libcrc32c_mod_fini);
 MODULE_AUTHOR("Clay Haapala <chaapala@cisco.com>");
 MODULE_DESCRIPTION("CRC32c (Castagnoli) calculations");
 MODULE_LICENSE("GPL");
+MODULE_SOFTDEP("pre: crc32c");
diff -druNp --no-dereference linux-libre-3.18.26-gnu/lib/radix-tree.c linux-libre-3.18.27-gnu/lib/radix-tree.c
--- linux-libre-3.18.26-gnu/lib/radix-tree.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/lib/radix-tree.c	2016-02-15 15:47:06.000000000 -0500
@@ -1014,9 +1014,13 @@ radix_tree_gang_lookup(struct radix_tree
 		return 0;
 
 	radix_tree_for_each_slot(slot, root, &iter, first_index) {
-		results[ret] = indirect_to_ptr(rcu_dereference_raw(*slot));
+		results[ret] = rcu_dereference_raw(*slot);
 		if (!results[ret])
 			continue;
+		if (radix_tree_is_indirect_ptr(results[ret])) {
+			slot = radix_tree_iter_retry(&iter);
+			continue;
+		}
 		if (++ret == max_items)
 			break;
 	}
@@ -1093,9 +1097,13 @@ radix_tree_gang_lookup_tag(struct radix_
 		return 0;
 
 	radix_tree_for_each_tagged(slot, root, &iter, first_index, tag) {
-		results[ret] = indirect_to_ptr(rcu_dereference_raw(*slot));
+		results[ret] = rcu_dereference_raw(*slot);
 		if (!results[ret])
 			continue;
+		if (radix_tree_is_indirect_ptr(results[ret])) {
+			slot = radix_tree_iter_retry(&iter);
+			continue;
+		}
 		if (++ret == max_items)
 			break;
 	}
diff -druNp --no-dereference linux-libre-3.18.26-gnu/Makefile linux-libre-3.18.27-gnu/Makefile
--- linux-libre-3.18.26-gnu/Makefile	2016-02-16 19:52:24.000000000 -0500
+++ linux-libre-3.18.27-gnu/Makefile	2016-02-16 21:11:46.000000000 -0500
@@ -1,6 +1,6 @@
 VERSION = 3
 PATCHLEVEL = 18
-SUBLEVEL = 26
+SUBLEVEL = 27
 EXTRAVERSION =-gnu
 NAME = Diseased Newt
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/mm/balloon_compaction.c linux-libre-3.18.27-gnu/mm/balloon_compaction.c
--- linux-libre-3.18.26-gnu/mm/balloon_compaction.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/mm/balloon_compaction.c	2016-02-15 15:47:06.000000000 -0500
@@ -61,6 +61,7 @@ struct page *balloon_page_dequeue(struct
 	bool dequeued_page;
 
 	dequeued_page = false;
+	spin_lock_irqsave(&b_dev_info->pages_lock, flags);
 	list_for_each_entry_safe(page, tmp, &b_dev_info->pages, lru) {
 		/*
 		 * Block others from accessing the 'page' while we get around
@@ -75,15 +76,14 @@ struct page *balloon_page_dequeue(struct
 				continue;
 			}
 #endif
-			spin_lock_irqsave(&b_dev_info->pages_lock, flags);
 			balloon_page_delete(page);
 			__count_vm_event(BALLOON_DEFLATE);
-			spin_unlock_irqrestore(&b_dev_info->pages_lock, flags);
 			unlock_page(page);
 			dequeued_page = true;
 			break;
 		}
 	}
+	spin_unlock_irqrestore(&b_dev_info->pages_lock, flags);
 
 	if (!dequeued_page) {
 		/*
diff -druNp --no-dereference linux-libre-3.18.26-gnu/mm/memcontrol.c linux-libre-3.18.27-gnu/mm/memcontrol.c
--- linux-libre-3.18.26-gnu/mm/memcontrol.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/mm/memcontrol.c	2016-02-15 15:47:06.000000000 -0500
@@ -4748,16 +4748,17 @@ static void __mem_cgroup_usage_unregiste
 swap_buffers:
 	/* Swap primary and spare array */
 	thresholds->spare = thresholds->primary;
-	/* If all events are unregistered, free the spare array */
-	if (!new) {
-		kfree(thresholds->spare);
-		thresholds->spare = NULL;
-	}
 
 	rcu_assign_pointer(thresholds->primary, new);
 
 	/* To be sure that nobody uses thresholds */
 	synchronize_rcu();
+
+	/* If all events are unregistered, free the spare array */
+	if (!new) {
+		kfree(thresholds->spare);
+		thresholds->spare = NULL;
+	}
 unlock:
 	mutex_unlock(&memcg->thresholds_lock);
 }
diff -druNp --no-dereference linux-libre-3.18.26-gnu/mm/memory-failure.c linux-libre-3.18.27-gnu/mm/memory-failure.c
--- linux-libre-3.18.26-gnu/mm/memory-failure.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/mm/memory-failure.c	2016-02-15 15:47:06.000000000 -0500
@@ -1523,7 +1523,7 @@ static int get_any_page(struct page *pag
 		 * Did it turn free?
 		 */
 		ret = __get_any_page(page, pfn, 0);
-		if (!PageLRU(page)) {
+		if (ret == 1 && !PageLRU(page)) {
 			/* Drop page reference which is from __get_any_page() */
 			put_page(page);
 			pr_info("soft_offline: %#lx: unknown non LRU page type %lx\n",
diff -druNp --no-dereference linux-libre-3.18.26-gnu/mm/mmap.c linux-libre-3.18.27-gnu/mm/mmap.c
--- linux-libre-3.18.26-gnu/mm/mmap.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/mm/mmap.c	2016-02-15 15:47:06.000000000 -0500
@@ -443,12 +443,16 @@ static void validate_mm(struct mm_struct
 	struct vm_area_struct *vma = mm->mmap;
 
 	while (vma) {
+		struct anon_vma *anon_vma = vma->anon_vma;
 		struct anon_vma_chain *avc;
 
-		vma_lock_anon_vma(vma);
-		list_for_each_entry(avc, &vma->anon_vma_chain, same_vma)
-			anon_vma_interval_tree_verify(avc);
-		vma_unlock_anon_vma(vma);
+		if (anon_vma) {
+			anon_vma_lock_read(anon_vma);
+			list_for_each_entry(avc, &vma->anon_vma_chain, same_vma)
+				anon_vma_interval_tree_verify(avc);
+			anon_vma_unlock_read(anon_vma);
+		}
+
 		highest_address = vma->vm_end;
 		vma = vma->vm_next;
 		i++;
@@ -2150,32 +2154,27 @@ static int acct_stack_growth(struct vm_a
  */
 int expand_upwards(struct vm_area_struct *vma, unsigned long address)
 {
-	int error;
+	int error = 0;
 
 	if (!(vma->vm_flags & VM_GROWSUP))
 		return -EFAULT;
 
-	/*
-	 * We must make sure the anon_vma is allocated
-	 * so that the anon_vma locking is not a noop.
-	 */
+	/* Guard against wrapping around to address 0. */
+	if (address < PAGE_ALIGN(address+4))
+		address = PAGE_ALIGN(address+4);
+	else
+		return -ENOMEM;
+
+	/* We must make sure the anon_vma is allocated. */
 	if (unlikely(anon_vma_prepare(vma)))
 		return -ENOMEM;
-	vma_lock_anon_vma(vma);
 
 	/*
 	 * vma->vm_start/vm_end cannot change under us because the caller
 	 * is required to hold the mmap_sem in read mode.  We need the
 	 * anon_vma lock to serialize against concurrent expand_stacks.
-	 * Also guard against wrapping around to address 0.
 	 */
-	if (address < PAGE_ALIGN(address+4))
-		address = PAGE_ALIGN(address+4);
-	else {
-		vma_unlock_anon_vma(vma);
-		return -ENOMEM;
-	}
-	error = 0;
+	anon_vma_lock_write(vma->anon_vma);
 
 	/* Somebody else might have raced and expanded it already */
 	if (address > vma->vm_end) {
@@ -2193,7 +2192,7 @@ int expand_upwards(struct vm_area_struct
 				 * updates, but we only hold a shared mmap_sem
 				 * lock here, so we need to protect against
 				 * concurrent vma expansions.
-				 * vma_lock_anon_vma() doesn't help here, as
+				 * anon_vma_lock_write() doesn't help here, as
 				 * we don't guarantee that all growable vmas
 				 * in a mm share the same root anon vma.
 				 * So, we reuse mm->page_table_lock to guard
@@ -2213,7 +2212,7 @@ int expand_upwards(struct vm_area_struct
 			}
 		}
 	}
-	vma_unlock_anon_vma(vma);
+	anon_vma_unlock_write(vma->anon_vma);
 	khugepaged_enter_vma_merge(vma, vma->vm_flags);
 	validate_mm(vma->vm_mm);
 	return error;
@@ -2228,25 +2227,21 @@ int expand_downwards(struct vm_area_stru
 {
 	int error;
 
-	/*
-	 * We must make sure the anon_vma is allocated
-	 * so that the anon_vma locking is not a noop.
-	 */
-	if (unlikely(anon_vma_prepare(vma)))
-		return -ENOMEM;
-
 	address &= PAGE_MASK;
 	error = security_mmap_addr(address);
 	if (error)
 		return error;
 
-	vma_lock_anon_vma(vma);
+	/* We must make sure the anon_vma is allocated. */
+	if (unlikely(anon_vma_prepare(vma)))
+		return -ENOMEM;
 
 	/*
 	 * vma->vm_start/vm_end cannot change under us because the caller
 	 * is required to hold the mmap_sem in read mode.  We need the
 	 * anon_vma lock to serialize against concurrent expand_stacks.
 	 */
+	anon_vma_lock_write(vma->anon_vma);
 
 	/* Somebody else might have raced and expanded it already */
 	if (address < vma->vm_start) {
@@ -2264,7 +2259,7 @@ int expand_downwards(struct vm_area_stru
 				 * updates, but we only hold a shared mmap_sem
 				 * lock here, so we need to protect against
 				 * concurrent vma expansions.
-				 * vma_lock_anon_vma() doesn't help here, as
+				 * anon_vma_lock_write() doesn't help here, as
 				 * we don't guarantee that all growable vmas
 				 * in a mm share the same root anon vma.
 				 * So, we reuse mm->page_table_lock to guard
@@ -2282,7 +2277,7 @@ int expand_downwards(struct vm_area_stru
 			}
 		}
 	}
-	vma_unlock_anon_vma(vma);
+	anon_vma_unlock_write(vma->anon_vma);
 	khugepaged_enter_vma_merge(vma, vma->vm_flags);
 	validate_mm(vma->vm_mm);
 	return error;
diff -druNp --no-dereference linux-libre-3.18.26-gnu/net/bridge/br_stp_if.c linux-libre-3.18.27-gnu/net/bridge/br_stp_if.c
--- linux-libre-3.18.26-gnu/net/bridge/br_stp_if.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/net/bridge/br_stp_if.c	2016-02-15 15:47:06.000000000 -0500
@@ -128,7 +128,10 @@ static void br_stp_start(struct net_brid
 	char *argv[] = { BR_STP_PROG, br->dev->name, "start", NULL };
 	char *envp[] = { NULL };
 
-	r = call_usermodehelper(BR_STP_PROG, argv, envp, UMH_WAIT_PROC);
+	if (net_eq(dev_net(br->dev), &init_net))
+		r = call_usermodehelper(BR_STP_PROG, argv, envp, UMH_WAIT_PROC);
+	else
+		r = -ENOENT;
 
 	spin_lock_bh(&br->lock);
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/net/core/dst.c linux-libre-3.18.27-gnu/net/core/dst.c
--- linux-libre-3.18.26-gnu/net/core/dst.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/net/core/dst.c	2016-02-15 15:47:06.000000000 -0500
@@ -282,10 +282,11 @@ void dst_release(struct dst_entry *dst)
 {
 	if (dst) {
 		int newrefcnt;
+		unsigned short nocache = dst->flags & DST_NOCACHE;
 
 		newrefcnt = atomic_dec_return(&dst->__refcnt);
 		WARN_ON(newrefcnt < 0);
-		if (!newrefcnt && unlikely(dst->flags & DST_NOCACHE))
+		if (!newrefcnt && unlikely(nocache))
 			call_rcu(&dst->rcu_head, dst_destroy_rcu);
 	}
 }
diff -druNp --no-dereference linux-libre-3.18.26-gnu/net/core/filter.c linux-libre-3.18.27-gnu/net/core/filter.c
--- linux-libre-3.18.26-gnu/net/core/filter.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/net/core/filter.c	2016-02-15 15:47:06.000000000 -0500
@@ -728,6 +728,11 @@ int bpf_check_classic(const struct sock_
 			if (ftest->k == 0)
 				return -EINVAL;
 			break;
+		case BPF_ALU | BPF_LSH | BPF_K:
+		case BPF_ALU | BPF_RSH | BPF_K:
+			if (ftest->k >= 32)
+				return -EINVAL;
+			break;
 		case BPF_LD | BPF_MEM:
 		case BPF_LDX | BPF_MEM:
 		case BPF_ST:
diff -druNp --no-dereference linux-libre-3.18.26-gnu/net/ipv4/tcp_yeah.c linux-libre-3.18.27-gnu/net/ipv4/tcp_yeah.c
--- linux-libre-3.18.26-gnu/net/ipv4/tcp_yeah.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/net/ipv4/tcp_yeah.c	2016-02-15 15:47:06.000000000 -0500
@@ -219,7 +219,7 @@ static u32 tcp_yeah_ssthresh(struct sock
 	yeah->fast_count = 0;
 	yeah->reno_count = max(yeah->reno_count>>1, 2U);
 
-	return tp->snd_cwnd - reduction;
+	return max_t(int, tp->snd_cwnd - reduction, 2);
 }
 
 static struct tcp_congestion_ops tcp_yeah __read_mostly = {
diff -druNp --no-dereference linux-libre-3.18.26-gnu/net/ipv4/xfrm4_policy.c linux-libre-3.18.27-gnu/net/ipv4/xfrm4_policy.c
--- linux-libre-3.18.26-gnu/net/ipv4/xfrm4_policy.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/net/ipv4/xfrm4_policy.c	2016-02-15 15:47:06.000000000 -0500
@@ -230,7 +230,7 @@ static void xfrm4_dst_ifdown(struct dst_
 	xfrm_dst_ifdown(dst, dev);
 }
 
-static struct dst_ops xfrm4_dst_ops = {
+static struct dst_ops xfrm4_dst_ops_template = {
 	.family =		AF_INET,
 	.protocol =		cpu_to_be16(ETH_P_IP),
 	.gc =			xfrm4_garbage_collect,
@@ -245,7 +245,7 @@ static struct dst_ops xfrm4_dst_ops = {
 
 static struct xfrm_policy_afinfo xfrm4_policy_afinfo = {
 	.family = 		AF_INET,
-	.dst_ops =		&xfrm4_dst_ops,
+	.dst_ops =		&xfrm4_dst_ops_template,
 	.dst_lookup =		xfrm4_dst_lookup,
 	.get_saddr =		xfrm4_get_saddr,
 	.decode_session =	_decode_session4,
@@ -267,7 +267,7 @@ static struct ctl_table xfrm4_policy_tab
 	{ }
 };
 
-static int __net_init xfrm4_net_init(struct net *net)
+static int __net_init xfrm4_net_sysctl_init(struct net *net)
 {
 	struct ctl_table *table;
 	struct ctl_table_header *hdr;
@@ -295,7 +295,7 @@ err_alloc:
 	return -ENOMEM;
 }
 
-static void __net_exit xfrm4_net_exit(struct net *net)
+static void __net_exit xfrm4_net_sysctl_exit(struct net *net)
 {
 	struct ctl_table *table;
 
@@ -307,12 +307,44 @@ static void __net_exit xfrm4_net_exit(st
 	if (!net_eq(net, &init_net))
 		kfree(table);
 }
+#else /* CONFIG_SYSCTL */
+static int inline xfrm4_net_sysctl_init(struct net *net)
+{
+	return 0;
+}
+
+static void inline xfrm4_net_sysctl_exit(struct net *net)
+{
+}
+#endif
+
+static int __net_init xfrm4_net_init(struct net *net)
+{
+	int ret;
+
+	memcpy(&net->xfrm.xfrm4_dst_ops, &xfrm4_dst_ops_template,
+	       sizeof(xfrm4_dst_ops_template));
+	ret = dst_entries_init(&net->xfrm.xfrm4_dst_ops);
+	if (ret)
+		return ret;
+
+	ret = xfrm4_net_sysctl_init(net);
+	if (ret)
+		dst_entries_destroy(&net->xfrm.xfrm4_dst_ops);
+
+	return ret;
+}
+
+static void __net_exit xfrm4_net_exit(struct net *net)
+{
+	xfrm4_net_sysctl_exit(net);
+	dst_entries_destroy(&net->xfrm.xfrm4_dst_ops);
+}
 
 static struct pernet_operations __net_initdata xfrm4_net_ops = {
 	.init	= xfrm4_net_init,
 	.exit	= xfrm4_net_exit,
 };
-#endif
 
 static void __init xfrm4_policy_init(void)
 {
@@ -321,13 +353,9 @@ static void __init xfrm4_policy_init(voi
 
 void __init xfrm4_init(void)
 {
-	dst_entries_init(&xfrm4_dst_ops);
-
 	xfrm4_state_init();
 	xfrm4_policy_init();
 	xfrm4_protocol_init();
-#ifdef CONFIG_SYSCTL
 	register_pernet_subsys(&xfrm4_net_ops);
-#endif
 }
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/net/ipv6/addrlabel.c linux-libre-3.18.27-gnu/net/ipv6/addrlabel.c
--- linux-libre-3.18.26-gnu/net/ipv6/addrlabel.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/net/ipv6/addrlabel.c	2016-02-15 15:47:06.000000000 -0500
@@ -558,7 +558,7 @@ static int ip6addrlbl_get(struct sk_buff
 
 	rcu_read_lock();
 	p = __ipv6_addr_label(net, addr, ipv6_addr_type(addr), ifal->ifal_index);
-	if (p && ip6addrlbl_hold(p))
+	if (p && !ip6addrlbl_hold(p))
 		p = NULL;
 	lseq = ip6addrlbl_table.seq;
 	rcu_read_unlock();
diff -druNp --no-dereference linux-libre-3.18.26-gnu/net/ipv6/tcp_ipv6.c linux-libre-3.18.27-gnu/net/ipv6/tcp_ipv6.c
--- linux-libre-3.18.26-gnu/net/ipv6/tcp_ipv6.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/net/ipv6/tcp_ipv6.c	2016-02-15 15:47:06.000000000 -0500
@@ -502,8 +502,10 @@ static int tcp_v6_send_synack(struct soc
 			fl6->flowlabel = ip6_flowlabel(ipv6_hdr(ireq->pktopts));
 
 		skb_set_queue_mapping(skb, queue_mapping);
+		rcu_read_lock();
 		err = ip6_xmit(sk, skb, fl6, rcu_dereference(np->opt),
 			       np->tclass);
+		rcu_read_unlock();
 		err = net_xmit_eval(err);
 	}
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/net/ipv6/xfrm6_mode_tunnel.c linux-libre-3.18.27-gnu/net/ipv6/xfrm6_mode_tunnel.c
--- linux-libre-3.18.26-gnu/net/ipv6/xfrm6_mode_tunnel.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/net/ipv6/xfrm6_mode_tunnel.c	2016-02-15 15:47:06.000000000 -0500
@@ -24,7 +24,7 @@ static inline void ipip6_ecn_decapsulate
 	struct ipv6hdr *inner_iph = ipipv6_hdr(skb);
 
 	if (INET_ECN_is_ce(ipv6_get_dsfield(outer_iph)))
-		IP6_ECN_set_ce(inner_iph);
+		IP6_ECN_set_ce(skb, inner_iph);
 }
 
 /* Add encapsulation header.
diff -druNp --no-dereference linux-libre-3.18.26-gnu/net/ipv6/xfrm6_policy.c linux-libre-3.18.27-gnu/net/ipv6/xfrm6_policy.c
--- linux-libre-3.18.26-gnu/net/ipv6/xfrm6_policy.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/net/ipv6/xfrm6_policy.c	2016-02-15 15:47:06.000000000 -0500
@@ -284,7 +284,7 @@ static void xfrm6_dst_ifdown(struct dst_
 	xfrm_dst_ifdown(dst, dev);
 }
 
-static struct dst_ops xfrm6_dst_ops = {
+static struct dst_ops xfrm6_dst_ops_template = {
 	.family =		AF_INET6,
 	.protocol =		cpu_to_be16(ETH_P_IPV6),
 	.gc =			xfrm6_garbage_collect,
@@ -299,7 +299,7 @@ static struct dst_ops xfrm6_dst_ops = {
 
 static struct xfrm_policy_afinfo xfrm6_policy_afinfo = {
 	.family =		AF_INET6,
-	.dst_ops =		&xfrm6_dst_ops,
+	.dst_ops =		&xfrm6_dst_ops_template,
 	.dst_lookup =		xfrm6_dst_lookup,
 	.get_saddr =		xfrm6_get_saddr,
 	.decode_session =	_decode_session6,
@@ -332,7 +332,7 @@ static struct ctl_table xfrm6_policy_tab
 	{ }
 };
 
-static int __net_init xfrm6_net_init(struct net *net)
+static int __net_init xfrm6_net_sysctl_init(struct net *net)
 {
 	struct ctl_table *table;
 	struct ctl_table_header *hdr;
@@ -360,7 +360,7 @@ err_alloc:
 	return -ENOMEM;
 }
 
-static void __net_exit xfrm6_net_exit(struct net *net)
+static void __net_exit xfrm6_net_sysctl_exit(struct net *net)
 {
 	struct ctl_table *table;
 
@@ -372,24 +372,52 @@ static void __net_exit xfrm6_net_exit(st
 	if (!net_eq(net, &init_net))
 		kfree(table);
 }
+#else /* CONFIG_SYSCTL */
+static int inline xfrm6_net_sysctl_init(struct net *net)
+{
+	return 0;
+}
+
+static void inline xfrm6_net_sysctl_exit(struct net *net)
+{
+}
+#endif
+
+static int __net_init xfrm6_net_init(struct net *net)
+{
+	int ret;
+
+	memcpy(&net->xfrm.xfrm6_dst_ops, &xfrm6_dst_ops_template,
+	       sizeof(xfrm6_dst_ops_template));
+	ret = dst_entries_init(&net->xfrm.xfrm6_dst_ops);
+	if (ret)
+		return ret;
+
+	ret = xfrm6_net_sysctl_init(net);
+	if (ret)
+		dst_entries_destroy(&net->xfrm.xfrm6_dst_ops);
+
+	return ret;
+}
+
+static void __net_exit xfrm6_net_exit(struct net *net)
+{
+	xfrm6_net_sysctl_exit(net);
+	dst_entries_destroy(&net->xfrm.xfrm6_dst_ops);
+}
 
 static struct pernet_operations xfrm6_net_ops = {
 	.init	= xfrm6_net_init,
 	.exit	= xfrm6_net_exit,
 };
-#endif
 
 int __init xfrm6_init(void)
 {
 	int ret;
 
-	dst_entries_init(&xfrm6_dst_ops);
-
 	ret = xfrm6_policy_init();
-	if (ret) {
-		dst_entries_destroy(&xfrm6_dst_ops);
+	if (ret)
 		goto out;
-	}
 	ret = xfrm6_state_init();
 	if (ret)
 		goto out_policy;
@@ -398,9 +426,7 @@ int __init xfrm6_init(void)
 	if (ret)
 		goto out_state;
 
-#ifdef CONFIG_SYSCTL
 	register_pernet_subsys(&xfrm6_net_ops);
-#endif
 out:
 	return ret;
 out_state:
@@ -412,11 +438,8 @@ out_policy:
 
 void xfrm6_fini(void)
 {
-#ifdef CONFIG_SYSCTL
 	unregister_pernet_subsys(&xfrm6_net_ops);
-#endif
 	xfrm6_protocol_fini();
 	xfrm6_policy_fini();
 	xfrm6_state_fini();
-	dst_entries_destroy(&xfrm6_dst_ops);
 }
diff -druNp --no-dereference linux-libre-3.18.26-gnu/net/mac80211/ibss.c linux-libre-3.18.27-gnu/net/mac80211/ibss.c
--- linux-libre-3.18.26-gnu/net/mac80211/ibss.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/net/mac80211/ibss.c	2016-02-15 15:47:06.000000000 -0500
@@ -1620,7 +1620,6 @@ void ieee80211_ibss_notify_scan_complete
 		if (sdata->vif.type != NL80211_IFTYPE_ADHOC)
 			continue;
 		sdata->u.ibss.last_scan_completed = jiffies;
-		ieee80211_queue_work(&local->hw, &sdata->work);
 	}
 	mutex_unlock(&local->iflist_mtx);
 }
diff -druNp --no-dereference linux-libre-3.18.26-gnu/net/mac80211/mesh.c linux-libre-3.18.27-gnu/net/mac80211/mesh.c
--- linux-libre-3.18.26-gnu/net/mac80211/mesh.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/net/mac80211/mesh.c	2016-02-15 15:47:06.000000000 -0500
@@ -1297,17 +1297,6 @@ out:
 	sdata_unlock(sdata);
 }
 
-void ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local)
-{
-	struct ieee80211_sub_if_data *sdata;
-
-	rcu_read_lock();
-	list_for_each_entry_rcu(sdata, &local->interfaces, list)
-		if (ieee80211_vif_is_mesh(&sdata->vif) &&
-		    ieee80211_sdata_running(sdata))
-			ieee80211_queue_work(&local->hw, &sdata->work);
-	rcu_read_unlock();
-}
 
 void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata)
 {
diff -druNp --no-dereference linux-libre-3.18.26-gnu/net/mac80211/mesh.h linux-libre-3.18.27-gnu/net/mac80211/mesh.h
--- linux-libre-3.18.26-gnu/net/mac80211/mesh.h	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/net/mac80211/mesh.h	2016-02-15 15:47:06.000000000 -0500
@@ -355,14 +355,10 @@ static inline bool mesh_path_sel_is_hwmp
 	return sdata->u.mesh.mesh_pp_id == IEEE80211_PATH_PROTOCOL_HWMP;
 }
 
-void ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local);
-
 void mesh_path_flush_by_iface(struct ieee80211_sub_if_data *sdata);
 void mesh_sync_adjust_tbtt(struct ieee80211_sub_if_data *sdata);
 void ieee80211s_stop(void);
 #else
-static inline void
-ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local) {}
 static inline bool mesh_path_sel_is_hwmp(struct ieee80211_sub_if_data *sdata)
 { return false; }
 static inline void mesh_path_flush_by_iface(struct ieee80211_sub_if_data *sdata)
diff -druNp --no-dereference linux-libre-3.18.26-gnu/net/mac80211/mlme.c linux-libre-3.18.27-gnu/net/mac80211/mlme.c
--- linux-libre-3.18.26-gnu/net/mac80211/mlme.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/net/mac80211/mlme.c	2016-02-15 15:47:06.000000000 -0500
@@ -3715,8 +3715,6 @@ static void ieee80211_restart_sta_timer(
 		if (!(flags & IEEE80211_HW_CONNECTION_MONITOR))
 			ieee80211_queue_work(&sdata->local->hw,
 					     &sdata->u.mgd.monitor_work);
-		/* and do all the other regular work too */
-		ieee80211_queue_work(&sdata->local->hw, &sdata->work);
 	}
 }
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/net/mac80211/scan.c linux-libre-3.18.27-gnu/net/mac80211/scan.c
--- linux-libre-3.18.26-gnu/net/mac80211/scan.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/net/mac80211/scan.c	2016-02-15 15:47:06.000000000 -0500
@@ -290,6 +290,7 @@ static void __ieee80211_scan_completed(s
 	struct ieee80211_local *local = hw_to_local(hw);
 	bool hw_scan = local->ops->hw_scan;
 	bool was_scanning = local->scanning;
+	struct ieee80211_sub_if_data *sdata;
 
 	lockdep_assert_held(&local->mtx);
 
@@ -343,7 +344,16 @@ static void __ieee80211_scan_completed(s
 
 	ieee80211_mlme_notify_scan_completed(local);
 	ieee80211_ibss_notify_scan_completed(local);
-	ieee80211_mesh_notify_scan_completed(local);
+
+	/* Requeue all the work that might have been ignored while
+	 * the scan was in progress; if there was none this will
+	 * just be a no-op for the particular interface.
+	 */
+	list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+		if (ieee80211_sdata_running(sdata))
+			ieee80211_queue_work(&sdata->local->hw, &sdata->work);
+	}
+
 	if (was_scanning)
 		ieee80211_start_next_roc(local);
 }
diff -druNp --no-dereference linux-libre-3.18.26-gnu/net/mac802154/mib.c linux-libre-3.18.27-gnu/net/mac802154/mib.c
--- linux-libre-3.18.26-gnu/net/mac802154/mib.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/net/mac802154/mib.c	2016-02-15 15:47:06.000000000 -0500
@@ -93,7 +93,7 @@ void mac802154_dev_set_short_addr(struct
 	if ((priv->hw->ops->set_hw_addr_filt) &&
 	    (priv->hw->hw.hw_filt.short_addr != priv->short_addr)) {
 		priv->hw->hw.hw_filt.short_addr = priv->short_addr;
-		set_hw_addr_filt(dev, IEEE802515_AFILT_SADDR_CHANGED);
+		set_hw_addr_filt(dev, IEEE802154_AFILT_SADDR_CHANGED);
 	}
 }
 
@@ -121,7 +121,7 @@ void mac802154_dev_set_ieee_addr(struct
 	if (mac->ops->set_hw_addr_filt &&
 	    mac->hw.hw_filt.ieee_addr != priv->extended_addr) {
 		mac->hw.hw_filt.ieee_addr = priv->extended_addr;
-		set_hw_addr_filt(dev, IEEE802515_AFILT_IEEEADDR_CHANGED);
+		set_hw_addr_filt(dev, IEEE802154_AFILT_IEEEADDR_CHANGED);
 	}
 }
 
@@ -152,7 +152,7 @@ void mac802154_dev_set_pan_id(struct net
 	if ((priv->hw->ops->set_hw_addr_filt) &&
 	    (priv->hw->hw.hw_filt.pan_id != priv->pan_id)) {
 		priv->hw->hw.hw_filt.pan_id = priv->pan_id;
-		set_hw_addr_filt(dev, IEEE802515_AFILT_PANID_CHANGED);
+		set_hw_addr_filt(dev, IEEE802154_AFILT_PANID_CHANGED);
 	}
 }
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/net/phonet/af_phonet.c linux-libre-3.18.27-gnu/net/phonet/af_phonet.c
--- linux-libre-3.18.26-gnu/net/phonet/af_phonet.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/net/phonet/af_phonet.c	2016-02-15 15:47:06.000000000 -0500
@@ -377,6 +377,10 @@ static int phonet_rcv(struct sk_buff *sk
 	struct sockaddr_pn sa;
 	u16 len;
 
+	skb = skb_share_check(skb, GFP_ATOMIC);
+	if (!skb)
+		return NET_RX_DROP;
+
 	/* check we have at least a full Phonet header */
 	if (!pskb_pull(skb, sizeof(struct phonethdr)))
 		goto out;
diff -druNp --no-dereference linux-libre-3.18.26-gnu/net/rfkill/core.c linux-libre-3.18.27-gnu/net/rfkill/core.c
--- linux-libre-3.18.26-gnu/net/rfkill/core.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/net/rfkill/core.c	2016-02-15 15:47:06.000000000 -0500
@@ -1081,17 +1081,6 @@ static unsigned int rfkill_fop_poll(stru
 	return res;
 }
 
-static bool rfkill_readable(struct rfkill_data *data)
-{
-	bool r;
-
-	mutex_lock(&data->mtx);
-	r = !list_empty(&data->events);
-	mutex_unlock(&data->mtx);
-
-	return r;
-}
-
 static ssize_t rfkill_fop_read(struct file *file, char __user *buf,
 			       size_t count, loff_t *pos)
 {
@@ -1108,8 +1097,11 @@ static ssize_t rfkill_fop_read(struct fi
 			goto out;
 		}
 		mutex_unlock(&data->mtx);
+		/* since we re-check and it just compares pointers,
+		 * using !list_empty() without locking isn't a problem
+		 */
 		ret = wait_event_interruptible(data->read_wait,
-					       rfkill_readable(data));
+					       !list_empty(&data->events));
 		mutex_lock(&data->mtx);
 
 		if (ret)
diff -druNp --no-dereference linux-libre-3.18.26-gnu/net/sched/sch_generic.c linux-libre-3.18.27-gnu/net/sched/sch_generic.c
--- linux-libre-3.18.26-gnu/net/sched/sch_generic.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/net/sched/sch_generic.c	2016-02-15 15:47:06.000000000 -0500
@@ -666,8 +666,10 @@ static void qdisc_rcu_free(struct rcu_he
 {
 	struct Qdisc *qdisc = container_of(head, struct Qdisc, rcu_head);
 
-	if (qdisc_is_percpu_stats(qdisc))
+	if (qdisc_is_percpu_stats(qdisc)) {
 		free_percpu(qdisc->cpu_bstats);
+		free_percpu(qdisc->cpu_qstats);
+	}
 
 	kfree((char *) qdisc - qdisc->padded);
 }
diff -druNp --no-dereference linux-libre-3.18.26-gnu/net/sctp/sm_statefuns.c linux-libre-3.18.27-gnu/net/sctp/sm_statefuns.c
--- linux-libre-3.18.26-gnu/net/sctp/sm_statefuns.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/net/sctp/sm_statefuns.c	2016-02-15 15:47:06.000000000 -0500
@@ -4829,7 +4829,8 @@ sctp_disposition_t sctp_sf_do_9_1_prm_ab
 
 	retval = SCTP_DISPOSITION_CONSUME;
 
-	sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(abort));
+	if (abort)
+		sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(abort));
 
 	/* Even if we can't send the ABORT due to low memory delete the
 	 * TCB.  This is a departure from our typical NOMEM handling.
@@ -4966,7 +4967,8 @@ sctp_disposition_t sctp_sf_cookie_wait_p
 			SCTP_TO(SCTP_EVENT_TIMEOUT_T1_INIT));
 	retval = SCTP_DISPOSITION_CONSUME;
 
-	sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(abort));
+	if (abort)
+		sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(abort));
 
 	sctp_add_cmd_sf(commands, SCTP_CMD_NEW_STATE,
 			SCTP_STATE(SCTP_STATE_CLOSED));
diff -druNp --no-dereference linux-libre-3.18.26-gnu/net/sctp/socket.c linux-libre-3.18.27-gnu/net/sctp/socket.c
--- linux-libre-3.18.26-gnu/net/sctp/socket.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/net/sctp/socket.c	2016-02-15 15:47:06.000000000 -0500
@@ -1518,8 +1518,7 @@ static void sctp_close(struct sock *sk,
 			struct sctp_chunk *chunk;
 
 			chunk = sctp_make_abort_user(asoc, NULL, 0);
-			if (chunk)
-				sctp_primitive_ABORT(net, asoc, chunk);
+			sctp_primitive_ABORT(net, asoc, chunk);
 		} else
 			sctp_primitive_SHUTDOWN(net, asoc, NULL);
 	}
diff -druNp --no-dereference linux-libre-3.18.26-gnu/net/sctp/sysctl.c linux-libre-3.18.27-gnu/net/sctp/sysctl.c
--- linux-libre-3.18.26-gnu/net/sctp/sysctl.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/net/sctp/sysctl.c	2016-02-15 15:47:06.000000000 -0500
@@ -324,7 +324,7 @@ static int proc_sctp_do_hmac_alg(struct
 	struct ctl_table tbl;
 	bool changed = false;
 	char *none = "none";
-	char tmp[8];
+	char tmp[8] = {0};
 	int ret;
 
 	memset(&tbl, 0, sizeof(struct ctl_table));
diff -druNp --no-dereference linux-libre-3.18.26-gnu/net/unix/af_unix.c linux-libre-3.18.27-gnu/net/unix/af_unix.c
--- linux-libre-3.18.26-gnu/net/unix/af_unix.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/net/unix/af_unix.c	2016-02-15 15:47:06.000000000 -0500
@@ -1486,6 +1486,21 @@ static void unix_destruct_scm(struct sk_
 	sock_wfree(skb);
 }
 
+/*
+ * The "user->unix_inflight" variable is protected by the garbage
+ * collection lock, and we just read it locklessly here. If you go
+ * over the limit, there might be a tiny race in actually noticing
+ * it across threads. Tough.
+ */
+static inline bool too_many_unix_fds(struct task_struct *p)
+{
+	struct user_struct *user = current_user();
+
+	if (unlikely(user->unix_inflight > task_rlimit(p, RLIMIT_NOFILE)))
+		return !capable(CAP_SYS_RESOURCE) && !capable(CAP_SYS_ADMIN);
+	return false;
+}
+
 #define MAX_RECURSION_LEVEL 4
 
 static int unix_attach_fds(struct scm_cookie *scm, struct sk_buff *skb)
@@ -1494,6 +1509,9 @@ static int unix_attach_fds(struct scm_co
 	unsigned char max_level = 0;
 	int unix_sock_count = 0;
 
+	if (too_many_unix_fds(current))
+		return -ETOOMANYREFS;
+
 	for (i = scm->fp->count - 1; i >= 0; i--) {
 		struct sock *sk = unix_get_socket(scm->fp->fp[i]);
 
@@ -1515,10 +1533,8 @@ static int unix_attach_fds(struct scm_co
 	if (!UNIXCB(skb).fp)
 		return -ENOMEM;
 
-	if (unix_sock_count) {
-		for (i = scm->fp->count - 1; i >= 0; i--)
-			unix_inflight(scm->fp->fp[i]);
-	}
+	for (i = scm->fp->count - 1; i >= 0; i--)
+		unix_inflight(scm->fp->fp[i]);
 	return max_level;
 }
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/net/unix/garbage.c linux-libre-3.18.27-gnu/net/unix/garbage.c
--- linux-libre-3.18.26-gnu/net/unix/garbage.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/net/unix/garbage.c	2016-02-15 15:47:06.000000000 -0500
@@ -125,9 +125,12 @@ struct sock *unix_get_socket(struct file
 void unix_inflight(struct file *fp)
 {
 	struct sock *s = unix_get_socket(fp);
+
+	spin_lock(&unix_gc_lock);
+
 	if (s) {
 		struct unix_sock *u = unix_sk(s);
-		spin_lock(&unix_gc_lock);
+
 		if (atomic_long_inc_return(&u->inflight) == 1) {
 			BUG_ON(!list_empty(&u->link));
 			list_add_tail(&u->link, &gc_inflight_list);
@@ -135,22 +138,27 @@ void unix_inflight(struct file *fp)
 			BUG_ON(list_empty(&u->link));
 		}
 		unix_tot_inflight++;
-		spin_unlock(&unix_gc_lock);
 	}
+	fp->f_cred->user->unix_inflight++;
+	spin_unlock(&unix_gc_lock);
 }
 
 void unix_notinflight(struct file *fp)
 {
 	struct sock *s = unix_get_socket(fp);
+
+	spin_lock(&unix_gc_lock);
+
 	if (s) {
 		struct unix_sock *u = unix_sk(s);
-		spin_lock(&unix_gc_lock);
+
 		BUG_ON(list_empty(&u->link));
 		if (atomic_long_dec_and_test(&u->inflight))
 			list_del_init(&u->link);
 		unix_tot_inflight--;
-		spin_unlock(&unix_gc_lock);
 	}
+	fp->f_cred->user->unix_inflight--;
+	spin_unlock(&unix_gc_lock);
 }
 
 static void scan_inflight(struct sock *x, void (*func)(struct unix_sock *),
diff -druNp --no-dereference linux-libre-3.18.26-gnu/net/xfrm/xfrm_policy.c linux-libre-3.18.27-gnu/net/xfrm/xfrm_policy.c
--- linux-libre-3.18.26-gnu/net/xfrm/xfrm_policy.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/net/xfrm/xfrm_policy.c	2016-02-15 15:47:06.000000000 -0500
@@ -2801,7 +2801,6 @@ static struct neighbour *xfrm_neigh_look
 
 int xfrm_policy_register_afinfo(struct xfrm_policy_afinfo *afinfo)
 {
-	struct net *net;
 	int err = 0;
 	if (unlikely(afinfo == NULL))
 		return -EINVAL;
@@ -2832,26 +2831,6 @@ int xfrm_policy_register_afinfo(struct x
 	}
 	spin_unlock(&xfrm_policy_afinfo_lock);
 
-	rtnl_lock();
-	for_each_net(net) {
-		struct dst_ops *xfrm_dst_ops;
-
-		switch (afinfo->family) {
-		case AF_INET:
-			xfrm_dst_ops = &net->xfrm.xfrm4_dst_ops;
-			break;
-#if IS_ENABLED(CONFIG_IPV6)
-		case AF_INET6:
-			xfrm_dst_ops = &net->xfrm.xfrm6_dst_ops;
-			break;
-#endif
-		default:
-			BUG();
-		}
-		*xfrm_dst_ops = *afinfo->dst_ops;
-	}
-	rtnl_unlock();
-
 	return err;
 }
 EXPORT_SYMBOL(xfrm_policy_register_afinfo);
@@ -2887,22 +2866,6 @@ int xfrm_policy_unregister_afinfo(struct
 }
 EXPORT_SYMBOL(xfrm_policy_unregister_afinfo);
 
-static void __net_init xfrm_dst_ops_init(struct net *net)
-{
-	struct xfrm_policy_afinfo *afinfo;
-
-	rcu_read_lock();
-	afinfo = rcu_dereference(xfrm_policy_afinfo[AF_INET]);
-	if (afinfo)
-		net->xfrm.xfrm4_dst_ops = *afinfo->dst_ops;
-#if IS_ENABLED(CONFIG_IPV6)
-	afinfo = rcu_dereference(xfrm_policy_afinfo[AF_INET6]);
-	if (afinfo)
-		net->xfrm.xfrm6_dst_ops = *afinfo->dst_ops;
-#endif
-	rcu_read_unlock();
-}
-
 static int xfrm_dev_event(struct notifier_block *this, unsigned long event, void *ptr)
 {
 	struct net_device *dev = netdev_notifier_info_to_dev(ptr);
@@ -3050,7 +3013,6 @@ static int __net_init xfrm_net_init(stru
 	rv = xfrm_policy_init(net);
 	if (rv < 0)
 		goto out_policy;
-	xfrm_dst_ops_init(net);
 	rv = xfrm_sysctl_init(net);
 	if (rv < 0)
 		goto out_sysctl;
diff -druNp --no-dereference linux-libre-3.18.26-gnu/scripts/bloat-o-meter linux-libre-3.18.27-gnu/scripts/bloat-o-meter
--- linux-libre-3.18.26-gnu/scripts/bloat-o-meter	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/scripts/bloat-o-meter	2016-02-15 15:47:06.000000000 -0500
@@ -58,8 +58,8 @@ for name in common:
 delta.sort()
 delta.reverse()
 
-print "add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \
-      (add, remove, grow, shrink, up, -down, up-down)
-print "%-40s %7s %7s %+7s" % ("function", "old", "new", "delta")
+print("add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \
+      (add, remove, grow, shrink, up, -down, up-down))
+print("%-40s %7s %7s %+7s" % ("function", "old", "new", "delta"))
 for d, n in delta:
-    if d: print "%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d)
+    if d: print("%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d))
diff -druNp --no-dereference linux-libre-3.18.26-gnu/sound/core/compress_offload.c linux-libre-3.18.27-gnu/sound/core/compress_offload.c
--- linux-libre-3.18.26-gnu/sound/core/compress_offload.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/sound/core/compress_offload.c	2016-02-15 15:47:06.000000000 -0500
@@ -44,6 +44,13 @@
 #include <sound/compress_offload.h>
 #include <sound/compress_driver.h>
 
+/* struct snd_compr_codec_caps overflows the ioctl bit size for some
+ * architectures, so we need to disable the relevant ioctls.
+ */
+#if _IOC_SIZEBITS < 14
+#define COMPR_CODEC_CAPS_OVERFLOW
+#endif
+
 /* TODO:
  * - add substream support for multiple devices in case of
  *	SND_DYNAMIC_MINORS is not used
@@ -438,6 +445,7 @@ out:
 	return retval;
 }
 
+#ifndef COMPR_CODEC_CAPS_OVERFLOW
 static int
 snd_compr_get_codec_caps(struct snd_compr_stream *stream, unsigned long arg)
 {
@@ -461,6 +469,7 @@ out:
 	kfree(caps);
 	return retval;
 }
+#endif /* !COMPR_CODEC_CAPS_OVERFLOW */
 
 /* revisit this with snd_pcm_preallocate_xxx */
 static int snd_compr_allocate_buffer(struct snd_compr_stream *stream,
@@ -799,9 +808,11 @@ static long snd_compr_ioctl(struct file
 	case _IOC_NR(SNDRV_COMPRESS_GET_CAPS):
 		retval = snd_compr_get_caps(stream, arg);
 		break;
+#ifndef COMPR_CODEC_CAPS_OVERFLOW
 	case _IOC_NR(SNDRV_COMPRESS_GET_CODEC_CAPS):
 		retval = snd_compr_get_codec_caps(stream, arg);
 		break;
+#endif
 	case _IOC_NR(SNDRV_COMPRESS_SET_PARAMS):
 		retval = snd_compr_set_params(stream, arg);
 		break;
diff -druNp --no-dereference linux-libre-3.18.26-gnu/sound/core/oss/pcm_oss.c linux-libre-3.18.27-gnu/sound/core/oss/pcm_oss.c
--- linux-libre-3.18.26-gnu/sound/core/oss/pcm_oss.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/sound/core/oss/pcm_oss.c	2016-02-15 15:47:06.000000000 -0500
@@ -834,7 +834,8 @@ static int choose_rate(struct snd_pcm_su
 	return snd_pcm_hw_param_near(substream, params, SNDRV_PCM_HW_PARAM_RATE, best_rate, NULL);
 }
 
-static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream)
+static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream,
+				     bool trylock)
 {
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	struct snd_pcm_hw_params *params, *sparams;
@@ -848,7 +849,10 @@ static int snd_pcm_oss_change_params(str
 	struct snd_mask sformat_mask;
 	struct snd_mask mask;
 
-	if (mutex_lock_interruptible(&runtime->oss.params_lock))
+	if (trylock) {
+		if (!(mutex_trylock(&runtime->oss.params_lock)))
+			return -EAGAIN;
+	} else if (mutex_lock_interruptible(&runtime->oss.params_lock))
 		return -EINTR;
 	sw_params = kmalloc(sizeof(*sw_params), GFP_KERNEL);
 	params = kmalloc(sizeof(*params), GFP_KERNEL);
@@ -1093,7 +1097,7 @@ static int snd_pcm_oss_get_active_substr
 		if (asubstream == NULL)
 			asubstream = substream;
 		if (substream->runtime->oss.params) {
-			err = snd_pcm_oss_change_params(substream);
+			err = snd_pcm_oss_change_params(substream, false);
 			if (err < 0)
 				return err;
 		}
@@ -1133,7 +1137,7 @@ static int snd_pcm_oss_make_ready(struct
 		return 0;
 	runtime = substream->runtime;
 	if (runtime->oss.params) {
-		err = snd_pcm_oss_change_params(substream);
+		err = snd_pcm_oss_change_params(substream, false);
 		if (err < 0)
 			return err;
 	}
@@ -2164,7 +2168,7 @@ static int snd_pcm_oss_get_space(struct
 	runtime = substream->runtime;
 
 	if (runtime->oss.params &&
-	    (err = snd_pcm_oss_change_params(substream)) < 0)
+	    (err = snd_pcm_oss_change_params(substream, false)) < 0)
 		return err;
 
 	info.fragsize = runtime->oss.period_bytes;
@@ -2801,7 +2805,12 @@ static int snd_pcm_oss_mmap(struct file
 		return -EIO;
 	
 	if (runtime->oss.params) {
-		if ((err = snd_pcm_oss_change_params(substream)) < 0)
+		/* use mutex_trylock() for params_lock for avoiding a deadlock
+		 * between mmap_sem and params_lock taken by
+		 * copy_from/to_user() in snd_pcm_oss_write/read()
+		 */
+		err = snd_pcm_oss_change_params(substream, true);
+		if (err < 0)
 			return err;
 	}
 #ifdef CONFIG_SND_PCM_OSS_PLUGINS
diff -druNp --no-dereference linux-libre-3.18.26-gnu/sound/core/rawmidi.c linux-libre-3.18.27-gnu/sound/core/rawmidi.c
--- linux-libre-3.18.26-gnu/sound/core/rawmidi.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/sound/core/rawmidi.c	2016-02-15 15:47:06.000000000 -0500
@@ -952,31 +952,36 @@ static long snd_rawmidi_kernel_read1(str
 	unsigned long flags;
 	long result = 0, count1;
 	struct snd_rawmidi_runtime *runtime = substream->runtime;
+	unsigned long appl_ptr;
 
+	spin_lock_irqsave(&runtime->lock, flags);
 	while (count > 0 && runtime->avail) {
 		count1 = runtime->buffer_size - runtime->appl_ptr;
 		if (count1 > count)
 			count1 = count;
-		spin_lock_irqsave(&runtime->lock, flags);
 		if (count1 > (int)runtime->avail)
 			count1 = runtime->avail;
+
+		/* update runtime->appl_ptr before unlocking for userbuf */
+		appl_ptr = runtime->appl_ptr;
+		runtime->appl_ptr += count1;
+		runtime->appl_ptr %= runtime->buffer_size;
+		runtime->avail -= count1;
+
 		if (kernelbuf)
-			memcpy(kernelbuf + result, runtime->buffer + runtime->appl_ptr, count1);
+			memcpy(kernelbuf + result, runtime->buffer + appl_ptr, count1);
 		if (userbuf) {
 			spin_unlock_irqrestore(&runtime->lock, flags);
 			if (copy_to_user(userbuf + result,
-					 runtime->buffer + runtime->appl_ptr, count1)) {
+					 runtime->buffer + appl_ptr, count1)) {
 				return result > 0 ? result : -EFAULT;
 			}
 			spin_lock_irqsave(&runtime->lock, flags);
 		}
-		runtime->appl_ptr += count1;
-		runtime->appl_ptr %= runtime->buffer_size;
-		runtime->avail -= count1;
-		spin_unlock_irqrestore(&runtime->lock, flags);
 		result += count1;
 		count -= count1;
 	}
+	spin_unlock_irqrestore(&runtime->lock, flags);
 	return result;
 }
 
@@ -1065,23 +1070,16 @@ int snd_rawmidi_transmit_empty(struct sn
 EXPORT_SYMBOL(snd_rawmidi_transmit_empty);
 
 /**
- * snd_rawmidi_transmit_peek - copy data from the internal buffer
+ * __snd_rawmidi_transmit_peek - copy data from the internal buffer
  * @substream: the rawmidi substream
  * @buffer: the buffer pointer
  * @count: data size to transfer
  *
- * Copies data from the internal output buffer to the given buffer.
- *
- * Call this in the interrupt handler when the midi output is ready,
- * and call snd_rawmidi_transmit_ack() after the transmission is
- * finished.
- *
- * Return: The size of copied data, or a negative error code on failure.
+ * This is a variant of snd_rawmidi_transmit_peek() without spinlock.
  */
-int snd_rawmidi_transmit_peek(struct snd_rawmidi_substream *substream,
+int __snd_rawmidi_transmit_peek(struct snd_rawmidi_substream *substream,
 			      unsigned char *buffer, int count)
 {
-	unsigned long flags;
 	int result, count1;
 	struct snd_rawmidi_runtime *runtime = substream->runtime;
 
@@ -1091,7 +1089,6 @@ int snd_rawmidi_transmit_peek(struct snd
 		return -EINVAL;
 	}
 	result = 0;
-	spin_lock_irqsave(&runtime->lock, flags);
 	if (runtime->avail >= runtime->buffer_size) {
 		/* warning: lowlevel layer MUST trigger down the hardware */
 		goto __skip;
@@ -1116,25 +1113,47 @@ int snd_rawmidi_transmit_peek(struct snd
 		}
 	}
       __skip:
+	return result;
+}
+EXPORT_SYMBOL(__snd_rawmidi_transmit_peek);
+
+/**
+ * snd_rawmidi_transmit_peek - copy data from the internal buffer
+ * @substream: the rawmidi substream
+ * @buffer: the buffer pointer
+ * @count: data size to transfer
+ *
+ * Copies data from the internal output buffer to the given buffer.
+ *
+ * Call this in the interrupt handler when the midi output is ready,
+ * and call snd_rawmidi_transmit_ack() after the transmission is
+ * finished.
+ *
+ * Return: The size of copied data, or a negative error code on failure.
+ */
+int snd_rawmidi_transmit_peek(struct snd_rawmidi_substream *substream,
+			      unsigned char *buffer, int count)
+{
+	struct snd_rawmidi_runtime *runtime = substream->runtime;
+	int result;
+	unsigned long flags;
+
+	spin_lock_irqsave(&runtime->lock, flags);
+	result = __snd_rawmidi_transmit_peek(substream, buffer, count);
 	spin_unlock_irqrestore(&runtime->lock, flags);
 	return result;
 }
 EXPORT_SYMBOL(snd_rawmidi_transmit_peek);
 
 /**
- * snd_rawmidi_transmit_ack - acknowledge the transmission
+ * __snd_rawmidi_transmit_ack - acknowledge the transmission
  * @substream: the rawmidi substream
  * @count: the transferred count
  *
- * Advances the hardware pointer for the internal output buffer with
- * the given size and updates the condition.
- * Call after the transmission is finished.
- *
- * Return: The advanced size if successful, or a negative error code on failure.
+ * This is a variant of __snd_rawmidi_transmit_ack() without spinlock.
  */
-int snd_rawmidi_transmit_ack(struct snd_rawmidi_substream *substream, int count)
+int __snd_rawmidi_transmit_ack(struct snd_rawmidi_substream *substream, int count)
 {
-	unsigned long flags;
 	struct snd_rawmidi_runtime *runtime = substream->runtime;
 
 	if (runtime->buffer == NULL) {
@@ -1142,7 +1161,6 @@ int snd_rawmidi_transmit_ack(struct snd_
 			  "snd_rawmidi_transmit_ack: output is not active!!!\n");
 		return -EINVAL;
 	}
-	spin_lock_irqsave(&runtime->lock, flags);
 	snd_BUG_ON(runtime->avail + count > runtime->buffer_size);
 	runtime->hw_ptr += count;
 	runtime->hw_ptr %= runtime->buffer_size;
@@ -1152,9 +1170,32 @@ int snd_rawmidi_transmit_ack(struct snd_
 		if (runtime->drain || snd_rawmidi_ready(substream))
 			wake_up(&runtime->sleep);
 	}
-	spin_unlock_irqrestore(&runtime->lock, flags);
 	return count;
 }
+EXPORT_SYMBOL(__snd_rawmidi_transmit_ack);
+
+/**
+ * snd_rawmidi_transmit_ack - acknowledge the transmission
+ * @substream: the rawmidi substream
+ * @count: the transferred count
+ *
+ * Advances the hardware pointer for the internal output buffer with
+ * the given size and updates the condition.
+ * Call after the transmission is finished.
+ *
+ * Return: The advanced size if successful, or a negative error code on failure.
+ */
+int snd_rawmidi_transmit_ack(struct snd_rawmidi_substream *substream, int count)
+{
+	struct snd_rawmidi_runtime *runtime = substream->runtime;
+	int result;
+	unsigned long flags;
+
+	spin_lock_irqsave(&runtime->lock, flags);
+	result = __snd_rawmidi_transmit_ack(substream, count);
+	spin_unlock_irqrestore(&runtime->lock, flags);
+	return result;
+}
 EXPORT_SYMBOL(snd_rawmidi_transmit_ack);
 
 /**
@@ -1170,12 +1211,22 @@ EXPORT_SYMBOL(snd_rawmidi_transmit_ack);
 int snd_rawmidi_transmit(struct snd_rawmidi_substream *substream,
 			 unsigned char *buffer, int count)
 {
+	struct snd_rawmidi_runtime *runtime = substream->runtime;
+	int result;
+	unsigned long flags;
+
+	spin_lock_irqsave(&runtime->lock, flags);
 	if (!substream->opened)
-		return -EBADFD;
-	count = snd_rawmidi_transmit_peek(substream, buffer, count);
-	if (count < 0)
-		return count;
-	return snd_rawmidi_transmit_ack(substream, count);
+		result = -EBADFD;
+	else {
+		count = __snd_rawmidi_transmit_peek(substream, buffer, count);
+		if (count <= 0)
+			result = count;
+		else
+			result = __snd_rawmidi_transmit_ack(substream, count);
+	}
+	spin_unlock_irqrestore(&runtime->lock, flags);
+	return result;
 }
 EXPORT_SYMBOL(snd_rawmidi_transmit);
 
@@ -1187,8 +1238,9 @@ static long snd_rawmidi_kernel_write1(st
 	unsigned long flags;
 	long count1, result;
 	struct snd_rawmidi_runtime *runtime = substream->runtime;
+	unsigned long appl_ptr;
 
-	if (snd_BUG_ON(!kernelbuf && !userbuf))
+	if (!kernelbuf && !userbuf)
 		return -EINVAL;
 	if (snd_BUG_ON(!runtime->buffer))
 		return -EINVAL;
@@ -1207,12 +1259,19 @@ static long snd_rawmidi_kernel_write1(st
 			count1 = count;
 		if (count1 > (long)runtime->avail)
 			count1 = runtime->avail;
+
+		/* update runtime->appl_ptr before unlocking for userbuf */
+		appl_ptr = runtime->appl_ptr;
+		runtime->appl_ptr += count1;
+		runtime->appl_ptr %= runtime->buffer_size;
+		runtime->avail -= count1;
+
 		if (kernelbuf)
-			memcpy(runtime->buffer + runtime->appl_ptr,
+			memcpy(runtime->buffer + appl_ptr,
 			       kernelbuf + result, count1);
 		else if (userbuf) {
 			spin_unlock_irqrestore(&runtime->lock, flags);
-			if (copy_from_user(runtime->buffer + runtime->appl_ptr,
+			if (copy_from_user(runtime->buffer + appl_ptr,
 					   userbuf + result, count1)) {
 				spin_lock_irqsave(&runtime->lock, flags);
 				result = result > 0 ? result : -EFAULT;
@@ -1220,9 +1279,6 @@ static long snd_rawmidi_kernel_write1(st
 			}
 			spin_lock_irqsave(&runtime->lock, flags);
 		}
-		runtime->appl_ptr += count1;
-		runtime->appl_ptr %= runtime->buffer_size;
-		runtime->avail -= count1;
 		result += count1;
 		count -= count1;
 	}
diff -druNp --no-dereference linux-libre-3.18.26-gnu/sound/core/seq/oss/seq_oss_init.c linux-libre-3.18.27-gnu/sound/core/seq/oss/seq_oss_init.c
--- linux-libre-3.18.26-gnu/sound/core/seq/oss/seq_oss_init.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/sound/core/seq/oss/seq_oss_init.c	2016-02-15 15:47:06.000000000 -0500
@@ -204,7 +204,7 @@ snd_seq_oss_open(struct file *file, int
 
 	dp->index = i;
 	if (i >= SNDRV_SEQ_OSS_MAX_CLIENTS) {
-		pr_err("ALSA: seq_oss: too many applications\n");
+		pr_debug("ALSA: seq_oss: too many applications\n");
 		rc = -ENOMEM;
 		goto _error;
 	}
diff -druNp --no-dereference linux-libre-3.18.26-gnu/sound/core/seq/oss/seq_oss_synth.c linux-libre-3.18.27-gnu/sound/core/seq/oss/seq_oss_synth.c
--- linux-libre-3.18.26-gnu/sound/core/seq/oss/seq_oss_synth.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/sound/core/seq/oss/seq_oss_synth.c	2016-02-15 15:47:06.000000000 -0500
@@ -308,7 +308,7 @@ snd_seq_oss_synth_cleanup(struct seq_oss
 	struct seq_oss_synth *rec;
 	struct seq_oss_synthinfo *info;
 
-	if (snd_BUG_ON(dp->max_synthdev >= SNDRV_SEQ_OSS_MAX_SYNTH_DEVS))
+	if (snd_BUG_ON(dp->max_synthdev > SNDRV_SEQ_OSS_MAX_SYNTH_DEVS))
 		return;
 	for (i = 0; i < dp->max_synthdev; i++) {
 		info = &dp->synths[i];
diff -druNp --no-dereference linux-libre-3.18.26-gnu/sound/core/seq/seq_clientmgr.c linux-libre-3.18.27-gnu/sound/core/seq/seq_clientmgr.c
--- linux-libre-3.18.26-gnu/sound/core/seq/seq_clientmgr.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/sound/core/seq/seq_clientmgr.c	2016-02-15 15:47:06.000000000 -0500
@@ -678,6 +678,9 @@ static int deliver_to_subscribers(struct
 	else
 		down_read(&grp->list_mutex);
 	list_for_each_entry(subs, &grp->list_head, src_list) {
+		/* both ports ready? */
+		if (atomic_read(&subs->ref_count) != 2)
+			continue;
 		event->dest = subs->info.dest;
 		if (subs->info.flags & SNDRV_SEQ_PORT_SUBS_TIMESTAMP)
 			/* convert time according to flag with subscription */
diff -druNp --no-dereference linux-libre-3.18.26-gnu/sound/core/seq/seq_ports.c linux-libre-3.18.27-gnu/sound/core/seq/seq_ports.c
--- linux-libre-3.18.26-gnu/sound/core/seq/seq_ports.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/sound/core/seq/seq_ports.c	2016-02-15 15:47:06.000000000 -0500
@@ -175,10 +175,6 @@ struct snd_seq_client_port *snd_seq_crea
 }
 
 /* */
-enum group_type {
-	SRC_LIST, DEST_LIST
-};
-
 static int subscribe_port(struct snd_seq_client *client,
 			  struct snd_seq_client_port *port,
 			  struct snd_seq_port_subs_info *grp,
@@ -205,6 +201,20 @@ static struct snd_seq_client_port *get_c
 	return NULL;
 }
 
+static void delete_and_unsubscribe_port(struct snd_seq_client *client,
+					struct snd_seq_client_port *port,
+					struct snd_seq_subscribers *subs,
+					bool is_src, bool ack);
+
+static inline struct snd_seq_subscribers *
+get_subscriber(struct list_head *p, bool is_src)
+{
+	if (is_src)
+		return list_entry(p, struct snd_seq_subscribers, src_list);
+	else
+		return list_entry(p, struct snd_seq_subscribers, dest_list);
+}
+
 /*
  * remove all subscribers on the list
  * this is called from port_delete, for each src and dest list.
@@ -212,7 +222,7 @@ static struct snd_seq_client_port *get_c
 static void clear_subscriber_list(struct snd_seq_client *client,
 				  struct snd_seq_client_port *port,
 				  struct snd_seq_port_subs_info *grp,
-				  int grptype)
+				  int is_src)
 {
 	struct list_head *p, *n;
 
@@ -221,15 +231,13 @@ static void clear_subscriber_list(struct
 		struct snd_seq_client *c;
 		struct snd_seq_client_port *aport;
 
-		if (grptype == SRC_LIST) {
-			subs = list_entry(p, struct snd_seq_subscribers, src_list);
+		subs = get_subscriber(p, is_src);
+		if (is_src)
 			aport = get_client_port(&subs->info.dest, &c);
-		} else {
-			subs = list_entry(p, struct snd_seq_subscribers, dest_list);
+		else
 			aport = get_client_port(&subs->info.sender, &c);
-		}
-		list_del(p);
-		unsubscribe_port(client, port, grp, &subs->info, 0);
+		delete_and_unsubscribe_port(client, port, subs, is_src, false);
+
 		if (!aport) {
 			/* looks like the connected port is being deleted.
 			 * we decrease the counter, and when both ports are deleted
@@ -237,21 +245,14 @@ static void clear_subscriber_list(struct
 			 */
 			if (atomic_dec_and_test(&subs->ref_count))
 				kfree(subs);
-		} else {
-			/* ok we got the connected port */
-			struct snd_seq_port_subs_info *agrp;
-			agrp = (grptype == SRC_LIST) ? &aport->c_dest : &aport->c_src;
-			down_write(&agrp->list_mutex);
-			if (grptype == SRC_LIST)
-				list_del(&subs->dest_list);
-			else
-				list_del(&subs->src_list);
-			up_write(&agrp->list_mutex);
-			unsubscribe_port(c, aport, agrp, &subs->info, 1);
-			kfree(subs);
-			snd_seq_port_unlock(aport);
-			snd_seq_client_unlock(c);
+			continue;
 		}
+
+		/* ok we got the connected port */
+		delete_and_unsubscribe_port(c, aport, subs, !is_src, true);
+		kfree(subs);
+		snd_seq_port_unlock(aport);
+		snd_seq_client_unlock(c);
 	}
 }
 
@@ -264,8 +265,8 @@ static int port_delete(struct snd_seq_cl
 	snd_use_lock_sync(&port->use_lock); 
 
 	/* clear subscribers info */
-	clear_subscriber_list(client, port, &port->c_src, SRC_LIST);
-	clear_subscriber_list(client, port, &port->c_dest, DEST_LIST);
+	clear_subscriber_list(client, port, &port->c_src, true);
+	clear_subscriber_list(client, port, &port->c_dest, false);
 
 	if (port->private_free)
 		port->private_free(port->private_data);
@@ -484,85 +485,120 @@ static int match_subs_info(struct snd_se
 	return 0;
 }
 
-
-/* connect two ports */
-int snd_seq_port_connect(struct snd_seq_client *connector,
-			 struct snd_seq_client *src_client,
-			 struct snd_seq_client_port *src_port,
-			 struct snd_seq_client *dest_client,
-			 struct snd_seq_client_port *dest_port,
-			 struct snd_seq_port_subscribe *info)
+static int check_and_subscribe_port(struct snd_seq_client *client,
+				    struct snd_seq_client_port *port,
+				    struct snd_seq_subscribers *subs,
+				    bool is_src, bool exclusive, bool ack)
 {
-	struct snd_seq_port_subs_info *src = &src_port->c_src;
-	struct snd_seq_port_subs_info *dest = &dest_port->c_dest;
-	struct snd_seq_subscribers *subs, *s;
-	int err, src_called = 0;
-	unsigned long flags;
-	int exclusive;
-
-	subs = kzalloc(sizeof(*subs), GFP_KERNEL);
-	if (! subs)
-		return -ENOMEM;
-
-	subs->info = *info;
-	atomic_set(&subs->ref_count, 2);
-
-	down_write(&src->list_mutex);
-	down_write_nested(&dest->list_mutex, SINGLE_DEPTH_NESTING);
+	struct snd_seq_port_subs_info *grp;
+	struct list_head *p;
+	struct snd_seq_subscribers *s;
+	int err;
 
-	exclusive = info->flags & SNDRV_SEQ_PORT_SUBS_EXCLUSIVE ? 1 : 0;
+	grp = is_src ? &port->c_src : &port->c_dest;
 	err = -EBUSY;
+	down_write(&grp->list_mutex);
 	if (exclusive) {
-		if (! list_empty(&src->list_head) || ! list_empty(&dest->list_head))
+		if (!list_empty(&grp->list_head))
 			goto __error;
 	} else {
-		if (src->exclusive || dest->exclusive)
+		if (grp->exclusive)
 			goto __error;
 		/* check whether already exists */
-		list_for_each_entry(s, &src->list_head, src_list) {
-			if (match_subs_info(info, &s->info))
-				goto __error;
-		}
-		list_for_each_entry(s, &dest->list_head, dest_list) {
-			if (match_subs_info(info, &s->info))
+		list_for_each(p, &grp->list_head) {
+			s = get_subscriber(p, is_src);
+			if (match_subs_info(&subs->info, &s->info))
 				goto __error;
 		}
 	}
 
-	if ((err = subscribe_port(src_client, src_port, src, info,
-				  connector->number != src_client->number)) < 0)
-		goto __error;
-	src_called = 1;
-
-	if ((err = subscribe_port(dest_client, dest_port, dest, info,
-				  connector->number != dest_client->number)) < 0)
+	err = subscribe_port(client, port, grp, &subs->info, ack);
+	if (err < 0) {
+		grp->exclusive = 0;
 		goto __error;
+	}
 
 	/* add to list */
-	write_lock_irqsave(&src->list_lock, flags);
-	// write_lock(&dest->list_lock); // no other lock yet
-	list_add_tail(&subs->src_list, &src->list_head);
-	list_add_tail(&subs->dest_list, &dest->list_head);
-	// write_unlock(&dest->list_lock); // no other lock yet
-	write_unlock_irqrestore(&src->list_lock, flags);
+	write_lock_irq(&grp->list_lock);
+	if (is_src)
+		list_add_tail(&subs->src_list, &grp->list_head);
+	else
+		list_add_tail(&subs->dest_list, &grp->list_head);
+	grp->exclusive = exclusive;
+	atomic_inc(&subs->ref_count);
+	write_unlock_irq(&grp->list_lock);
+	err = 0;
 
-	src->exclusive = dest->exclusive = exclusive;
+ __error:
+	up_write(&grp->list_mutex);
+	return err;
+}
+
+static void delete_and_unsubscribe_port(struct snd_seq_client *client,
+					struct snd_seq_client_port *port,
+					struct snd_seq_subscribers *subs,
+					bool is_src, bool ack)
+{
+	struct snd_seq_port_subs_info *grp;
+
+	grp = is_src ? &port->c_src : &port->c_dest;
+	down_write(&grp->list_mutex);
+	write_lock_irq(&grp->list_lock);
+	if (is_src)
+		list_del(&subs->src_list);
+	else
+		list_del(&subs->dest_list);
+	grp->exclusive = 0;
+	write_unlock_irq(&grp->list_lock);
+	up_write(&grp->list_mutex);
+
+	unsubscribe_port(client, port, grp, &subs->info, ack);
+}
+
+/* connect two ports */
+int snd_seq_port_connect(struct snd_seq_client *connector,
+			 struct snd_seq_client *src_client,
+			 struct snd_seq_client_port *src_port,
+			 struct snd_seq_client *dest_client,
+			 struct snd_seq_client_port *dest_port,
+			 struct snd_seq_port_subscribe *info)
+{
+	struct snd_seq_subscribers *subs;
+	bool exclusive;
+	int err;
+
+	subs = kzalloc(sizeof(*subs), GFP_KERNEL);
+	if (!subs)
+		return -ENOMEM;
+
+	subs->info = *info;
+	atomic_set(&subs->ref_count, 0);
+	INIT_LIST_HEAD(&subs->src_list);
+	INIT_LIST_HEAD(&subs->dest_list);
+
+	exclusive = !!(info->flags & SNDRV_SEQ_PORT_SUBS_EXCLUSIVE);
+
+	err = check_and_subscribe_port(src_client, src_port, subs, true,
+				       exclusive,
+				       connector->number != src_client->number);
+	if (err < 0)
+		goto error;
+	err = check_and_subscribe_port(dest_client, dest_port, subs, false,
+				       exclusive,
+				       connector->number != dest_client->number);
+	if (err < 0)
+		goto error_dest;
 
-	up_write(&dest->list_mutex);
-	up_write(&src->list_mutex);
 	return 0;
 
- __error:
-	if (src_called)
-		unsubscribe_port(src_client, src_port, src, info,
-				 connector->number != src_client->number);
+ error_dest:
+	delete_and_unsubscribe_port(src_client, src_port, subs, true,
+				    connector->number != src_client->number);
+ error:
 	kfree(subs);
-	up_write(&dest->list_mutex);
-	up_write(&src->list_mutex);
 	return err;
 }
 
-
 /* remove the connection */
 int snd_seq_port_disconnect(struct snd_seq_client *connector,
 			    struct snd_seq_client *src_client,
@@ -572,37 +608,28 @@ int snd_seq_port_disconnect(struct snd_s
 			    struct snd_seq_port_subscribe *info)
 {
 	struct snd_seq_port_subs_info *src = &src_port->c_src;
-	struct snd_seq_port_subs_info *dest = &dest_port->c_dest;
 	struct snd_seq_subscribers *subs;
 	int err = -ENOENT;
-	unsigned long flags;
 
 	down_write(&src->list_mutex);
-	down_write_nested(&dest->list_mutex, SINGLE_DEPTH_NESTING);
-
 	/* look for the connection */
 	list_for_each_entry(subs, &src->list_head, src_list) {
 		if (match_subs_info(info, &subs->info)) {
-			write_lock_irqsave(&src->list_lock, flags);
-			// write_lock(&dest->list_lock);  // no lock yet
-			list_del(&subs->src_list);
-			list_del(&subs->dest_list);
-			// write_unlock(&dest->list_lock);
-			write_unlock_irqrestore(&src->list_lock, flags);
-			src->exclusive = dest->exclusive = 0;
-			unsubscribe_port(src_client, src_port, src, info,
-					 connector->number != src_client->number);
-			unsubscribe_port(dest_client, dest_port, dest, info,
-					 connector->number != dest_client->number);
-			kfree(subs);
+			atomic_dec(&subs->ref_count); /* mark as not ready */
 			err = 0;
 			break;
 		}
 	}
-
-	up_write(&dest->list_mutex);
 	up_write(&src->list_mutex);
-	return err;
+	if (err < 0)
+		return err;
+
+	delete_and_unsubscribe_port(src_client, src_port, subs, true,
+				    connector->number != src_client->number);
+	delete_and_unsubscribe_port(dest_client, dest_port, subs, false,
+				    connector->number != dest_client->number);
+	kfree(subs);
+	return 0;
 }
 
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/sound/core/seq/seq_timer.c linux-libre-3.18.27-gnu/sound/core/seq/seq_timer.c
--- linux-libre-3.18.26-gnu/sound/core/seq/seq_timer.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/sound/core/seq/seq_timer.c	2016-02-15 15:47:06.000000000 -0500
@@ -92,6 +92,9 @@ void snd_seq_timer_delete(struct snd_seq
 
 void snd_seq_timer_defaults(struct snd_seq_timer * tmr)
 {
+	unsigned long flags;
+
+	spin_lock_irqsave(&tmr->lock, flags);
 	/* setup defaults */
 	tmr->ppq = 96;		/* 96 PPQ */
 	tmr->tempo = 500000;	/* 120 BPM */
@@ -107,21 +110,25 @@ void snd_seq_timer_defaults(struct snd_s
 	tmr->preferred_resolution = seq_default_timer_resolution;
 
 	tmr->skew = tmr->skew_base = SKEW_BASE;
+	spin_unlock_irqrestore(&tmr->lock, flags);
 }
 
-void snd_seq_timer_reset(struct snd_seq_timer * tmr)
+static void seq_timer_reset(struct snd_seq_timer *tmr)
 {
-	unsigned long flags;
-
-	spin_lock_irqsave(&tmr->lock, flags);
-
 	/* reset time & songposition */
 	tmr->cur_time.tv_sec = 0;
 	tmr->cur_time.tv_nsec = 0;
 
 	tmr->tick.cur_tick = 0;
 	tmr->tick.fraction = 0;
+}
 
+void snd_seq_timer_reset(struct snd_seq_timer *tmr)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&tmr->lock, flags);
+	seq_timer_reset(tmr);
 	spin_unlock_irqrestore(&tmr->lock, flags);
 }
 
@@ -140,8 +147,11 @@ static void snd_seq_timer_interrupt(stru
 	tmr = q->timer;
 	if (tmr == NULL)
 		return;
-	if (!tmr->running)
+	spin_lock_irqsave(&tmr->lock, flags);
+	if (!tmr->running) {
+		spin_unlock_irqrestore(&tmr->lock, flags);
 		return;
+	}
 
 	resolution *= ticks;
 	if (tmr->skew != tmr->skew_base) {
@@ -150,8 +160,6 @@ static void snd_seq_timer_interrupt(stru
 			(((resolution & 0xffff) * tmr->skew) >> 16);
 	}
 
-	spin_lock_irqsave(&tmr->lock, flags);
-
 	/* update timer */
 	snd_seq_inc_time_nsec(&tmr->cur_time, resolution);
 
@@ -298,26 +306,30 @@ int snd_seq_timer_open(struct snd_seq_qu
 	t->callback = snd_seq_timer_interrupt;
 	t->callback_data = q;
 	t->flags |= SNDRV_TIMER_IFLG_AUTO;
+	spin_lock_irq(&tmr->lock);
 	tmr->timeri = t;
+	spin_unlock_irq(&tmr->lock);
 	return 0;
 }
 
 int snd_seq_timer_close(struct snd_seq_queue *q)
 {
 	struct snd_seq_timer *tmr;
+	struct snd_timer_instance *t;
 	
 	tmr = q->timer;
 	if (snd_BUG_ON(!tmr))
 		return -EINVAL;
-	if (tmr->timeri) {
-		snd_timer_stop(tmr->timeri);
-		snd_timer_close(tmr->timeri);
-		tmr->timeri = NULL;
-	}
+	spin_lock_irq(&tmr->lock);
+	t = tmr->timeri;
+	tmr->timeri = NULL;
+	spin_unlock_irq(&tmr->lock);
+	if (t)
+		snd_timer_close(t);
 	return 0;
 }
 
-int snd_seq_timer_stop(struct snd_seq_timer * tmr)
+static int seq_timer_stop(struct snd_seq_timer *tmr)
 {
 	if (! tmr->timeri)
 		return -EINVAL;
@@ -328,6 +340,17 @@ int snd_seq_timer_stop(struct snd_seq_ti
 	return 0;
 }
 
+int snd_seq_timer_stop(struct snd_seq_timer *tmr)
+{
+	unsigned long flags;
+	int err;
+
+	spin_lock_irqsave(&tmr->lock, flags);
+	err = seq_timer_stop(tmr);
+	spin_unlock_irqrestore(&tmr->lock, flags);
+	return err;
+}
+
 static int initialize_timer(struct snd_seq_timer *tmr)
 {
 	struct snd_timer *t;
@@ -360,13 +383,13 @@ static int initialize_timer(struct snd_s
 	return 0;
 }
 
-int snd_seq_timer_start(struct snd_seq_timer * tmr)
+static int seq_timer_start(struct snd_seq_timer *tmr)
 {
 	if (! tmr->timeri)
 		return -EINVAL;
 	if (tmr->running)
-		snd_seq_timer_stop(tmr);
-	snd_seq_timer_reset(tmr);
+		seq_timer_stop(tmr);
+	seq_timer_reset(tmr);
 	if (initialize_timer(tmr) < 0)
 		return -EINVAL;
 	snd_timer_start(tmr->timeri, tmr->ticks);
@@ -375,14 +398,25 @@ int snd_seq_timer_start(struct snd_seq_t
 	return 0;
 }
 
-int snd_seq_timer_continue(struct snd_seq_timer * tmr)
+int snd_seq_timer_start(struct snd_seq_timer *tmr)
+{
+	unsigned long flags;
+	int err;
+
+	spin_lock_irqsave(&tmr->lock, flags);
+	err = seq_timer_start(tmr);
+	spin_unlock_irqrestore(&tmr->lock, flags);
+	return err;
+}
+
+static int seq_timer_continue(struct snd_seq_timer *tmr)
 {
 	if (! tmr->timeri)
 		return -EINVAL;
 	if (tmr->running)
 		return -EBUSY;
 	if (! tmr->initialized) {
-		snd_seq_timer_reset(tmr);
+		seq_timer_reset(tmr);
 		if (initialize_timer(tmr) < 0)
 			return -EINVAL;
 	}
@@ -392,11 +426,24 @@ int snd_seq_timer_continue(struct snd_se
 	return 0;
 }
 
+int snd_seq_timer_continue(struct snd_seq_timer *tmr)
+{
+	unsigned long flags;
+	int err;
+
+	spin_lock_irqsave(&tmr->lock, flags);
+	err = seq_timer_continue(tmr);
+	spin_unlock_irqrestore(&tmr->lock, flags);
+	return err;
+}
+
 /* return current 'real' time. use timeofday() to get better granularity. */
 snd_seq_real_time_t snd_seq_timer_get_cur_time(struct snd_seq_timer *tmr)
 {
 	snd_seq_real_time_t cur_time;
+	unsigned long flags;
 
+	spin_lock_irqsave(&tmr->lock, flags);
 	cur_time = tmr->cur_time;
 	if (tmr->running) { 
 		struct timeval tm;
@@ -412,7 +459,7 @@ snd_seq_real_time_t snd_seq_timer_get_cu
 		}
 		snd_seq_sanity_real_time(&cur_time);
 	}
-                
+	spin_unlock_irqrestore(&tmr->lock, flags);
 	return cur_time;	
 }
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/sound/core/seq/seq_virmidi.c linux-libre-3.18.27-gnu/sound/core/seq/seq_virmidi.c
--- linux-libre-3.18.26-gnu/sound/core/seq/seq_virmidi.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/sound/core/seq/seq_virmidi.c	2016-02-15 15:47:06.000000000 -0500
@@ -155,21 +155,26 @@ static void snd_virmidi_output_trigger(s
 	struct snd_virmidi *vmidi = substream->runtime->private_data;
 	int count, res;
 	unsigned char buf[32], *pbuf;
+	unsigned long flags;
 
 	if (up) {
 		vmidi->trigger = 1;
 		if (vmidi->seq_mode == SNDRV_VIRMIDI_SEQ_DISPATCH &&
 		    !(vmidi->rdev->flags & SNDRV_VIRMIDI_SUBSCRIBE)) {
-			snd_rawmidi_transmit_ack(substream, substream->runtime->buffer_size - substream->runtime->avail);
-			return;		/* ignored */
+			while (snd_rawmidi_transmit(substream, buf,
+						    sizeof(buf)) > 0) {
+				/* ignored */
+			}
+			return;
 		}
 		if (vmidi->event.type != SNDRV_SEQ_EVENT_NONE) {
 			if (snd_seq_kernel_client_dispatch(vmidi->client, &vmidi->event, in_atomic(), 0) < 0)
 				return;
 			vmidi->event.type = SNDRV_SEQ_EVENT_NONE;
 		}
+		spin_lock_irqsave(&substream->runtime->lock, flags);
 		while (1) {
-			count = snd_rawmidi_transmit_peek(substream, buf, sizeof(buf));
+			count = __snd_rawmidi_transmit_peek(substream, buf, sizeof(buf));
 			if (count <= 0)
 				break;
 			pbuf = buf;
@@ -179,16 +184,18 @@ static void snd_virmidi_output_trigger(s
 					snd_midi_event_reset_encode(vmidi->parser);
 					continue;
 				}
-				snd_rawmidi_transmit_ack(substream, res);
+				__snd_rawmidi_transmit_ack(substream, res);
 				pbuf += res;
 				count -= res;
 				if (vmidi->event.type != SNDRV_SEQ_EVENT_NONE) {
 					if (snd_seq_kernel_client_dispatch(vmidi->client, &vmidi->event, in_atomic(), 0) < 0)
-						return;
+						goto out;
 					vmidi->event.type = SNDRV_SEQ_EVENT_NONE;
 				}
 			}
 		}
+	out:
+		spin_unlock_irqrestore(&substream->runtime->lock, flags);
 	} else {
 		vmidi->trigger = 0;
 	}
@@ -254,9 +261,13 @@ static int snd_virmidi_output_open(struc
  */
 static int snd_virmidi_input_close(struct snd_rawmidi_substream *substream)
 {
+	struct snd_virmidi_dev *rdev = substream->rmidi->private_data;
 	struct snd_virmidi *vmidi = substream->runtime->private_data;
-	snd_midi_event_free(vmidi->parser);
+
+	write_lock_irq(&rdev->filelist_lock);
 	list_del(&vmidi->list);
+	write_unlock_irq(&rdev->filelist_lock);
+	snd_midi_event_free(vmidi->parser);
 	substream->runtime->private_data = NULL;
 	kfree(vmidi);
 	return 0;
diff -druNp --no-dereference linux-libre-3.18.26-gnu/sound/core/timer.c linux-libre-3.18.27-gnu/sound/core/timer.c
--- linux-libre-3.18.26-gnu/sound/core/timer.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/sound/core/timer.c	2016-02-15 15:47:06.000000000 -0500
@@ -215,11 +215,13 @@ static void snd_timer_check_master(struc
 		    slave->slave_id == master->slave_id) {
 			list_move_tail(&slave->open_list, &master->slave_list_head);
 			spin_lock_irq(&slave_active_lock);
+			spin_lock(&master->timer->lock);
 			slave->master = master;
 			slave->timer = master->timer;
 			if (slave->flags & SNDRV_TIMER_IFLG_RUNNING)
 				list_add_tail(&slave->active_list,
 					      &master->slave_active_head);
+			spin_unlock(&master->timer->lock);
 			spin_unlock_irq(&slave_active_lock);
 		}
 	}
@@ -299,8 +301,7 @@ int snd_timer_open(struct snd_timer_inst
 	return 0;
 }
 
-static int _snd_timer_stop(struct snd_timer_instance *timeri,
-			   int keep_flag, int event);
+static int _snd_timer_stop(struct snd_timer_instance *timeri, int event);
 
 /*
  * close a timer instance
@@ -342,19 +343,22 @@ int snd_timer_close(struct snd_timer_ins
 		spin_unlock_irq(&timer->lock);
 		mutex_lock(&register_mutex);
 		list_del(&timeri->open_list);
-		if (timer && list_empty(&timer->open_list_head) &&
+		if (list_empty(&timer->open_list_head) &&
 		    timer->hw.close)
 			timer->hw.close(timer);
 		/* remove slave links */
+		spin_lock_irq(&slave_active_lock);
+		spin_lock(&timer->lock);
 		list_for_each_entry_safe(slave, tmp, &timeri->slave_list_head,
 					 open_list) {
-			spin_lock_irq(&slave_active_lock);
-			_snd_timer_stop(slave, 1, SNDRV_TIMER_EVENT_RESOLUTION);
 			list_move_tail(&slave->open_list, &snd_timer_slave_list);
 			slave->master = NULL;
 			slave->timer = NULL;
-			spin_unlock_irq(&slave_active_lock);
+			list_del_init(&slave->ack_list);
+			list_del_init(&slave->active_list);
 		}
+		spin_unlock(&timer->lock);
+		spin_unlock_irq(&slave_active_lock);
 		mutex_unlock(&register_mutex);
 	}
  out:
@@ -440,10 +444,17 @@ static int snd_timer_start_slave(struct
 	unsigned long flags;
 
 	spin_lock_irqsave(&slave_active_lock, flags);
+	if (timeri->flags & SNDRV_TIMER_IFLG_RUNNING) {
+		spin_unlock_irqrestore(&slave_active_lock, flags);
+		return -EBUSY;
+	}
 	timeri->flags |= SNDRV_TIMER_IFLG_RUNNING;
-	if (timeri->master)
+	if (timeri->master && timeri->timer) {
+		spin_lock(&timeri->timer->lock);
 		list_add_tail(&timeri->active_list,
 			      &timeri->master->slave_active_head);
+		spin_unlock(&timeri->timer->lock);
+	}
 	spin_unlock_irqrestore(&slave_active_lock, flags);
 	return 1; /* delayed start */
 }
@@ -461,23 +472,30 @@ int snd_timer_start(struct snd_timer_ins
 		return -EINVAL;
 	if (timeri->flags & SNDRV_TIMER_IFLG_SLAVE) {
 		result = snd_timer_start_slave(timeri);
-		snd_timer_notify1(timeri, SNDRV_TIMER_EVENT_START);
+		if (result >= 0)
+			snd_timer_notify1(timeri, SNDRV_TIMER_EVENT_START);
 		return result;
 	}
 	timer = timeri->timer;
 	if (timer == NULL)
 		return -EINVAL;
 	spin_lock_irqsave(&timer->lock, flags);
+	if (timeri->flags & (SNDRV_TIMER_IFLG_RUNNING |
+			     SNDRV_TIMER_IFLG_START)) {
+		result = -EBUSY;
+		goto unlock;
+	}
 	timeri->ticks = timeri->cticks = ticks;
 	timeri->pticks = 0;
 	result = snd_timer_start1(timer, timeri, ticks);
+ unlock:
 	spin_unlock_irqrestore(&timer->lock, flags);
-	snd_timer_notify1(timeri, SNDRV_TIMER_EVENT_START);
+	if (result >= 0)
+		snd_timer_notify1(timeri, SNDRV_TIMER_EVENT_START);
 	return result;
 }
 
-static int _snd_timer_stop(struct snd_timer_instance * timeri,
-			   int keep_flag, int event)
+static int _snd_timer_stop(struct snd_timer_instance *timeri, int event)
 {
 	struct snd_timer *timer;
 	unsigned long flags;
@@ -486,17 +504,26 @@ static int _snd_timer_stop(struct snd_ti
 		return -ENXIO;
 
 	if (timeri->flags & SNDRV_TIMER_IFLG_SLAVE) {
-		if (!keep_flag) {
-			spin_lock_irqsave(&slave_active_lock, flags);
-			timeri->flags &= ~SNDRV_TIMER_IFLG_RUNNING;
+		spin_lock_irqsave(&slave_active_lock, flags);
+		if (!(timeri->flags & SNDRV_TIMER_IFLG_RUNNING)) {
 			spin_unlock_irqrestore(&slave_active_lock, flags);
+			return -EBUSY;
 		}
+		timeri->flags &= ~SNDRV_TIMER_IFLG_RUNNING;
+		list_del_init(&timeri->ack_list);
+		list_del_init(&timeri->active_list);
+		spin_unlock_irqrestore(&slave_active_lock, flags);
 		goto __end;
 	}
 	timer = timeri->timer;
 	if (!timer)
 		return -EINVAL;
 	spin_lock_irqsave(&timer->lock, flags);
+	if (!(timeri->flags & (SNDRV_TIMER_IFLG_RUNNING |
+			       SNDRV_TIMER_IFLG_START))) {
+		spin_unlock_irqrestore(&timer->lock, flags);
+		return -EBUSY;
+	}
 	list_del_init(&timeri->ack_list);
 	list_del_init(&timeri->active_list);
 	if ((timeri->flags & SNDRV_TIMER_IFLG_RUNNING) &&
@@ -511,9 +538,7 @@ static int _snd_timer_stop(struct snd_ti
 			}
 		}
 	}
-	if (!keep_flag)
-		timeri->flags &=
-			~(SNDRV_TIMER_IFLG_RUNNING | SNDRV_TIMER_IFLG_START);
+	timeri->flags &= ~(SNDRV_TIMER_IFLG_RUNNING | SNDRV_TIMER_IFLG_START);
 	spin_unlock_irqrestore(&timer->lock, flags);
       __end:
 	if (event != SNDRV_TIMER_EVENT_RESOLUTION)
@@ -532,7 +557,7 @@ int snd_timer_stop(struct snd_timer_inst
 	unsigned long flags;
 	int err;
 
-	err = _snd_timer_stop(timeri, 0, SNDRV_TIMER_EVENT_STOP);
+	err = _snd_timer_stop(timeri, SNDRV_TIMER_EVENT_STOP);
 	if (err < 0)
 		return err;
 	timer = timeri->timer;
@@ -562,10 +587,15 @@ int snd_timer_continue(struct snd_timer_
 	if (! timer)
 		return -EINVAL;
 	spin_lock_irqsave(&timer->lock, flags);
+	if (timeri->flags & SNDRV_TIMER_IFLG_RUNNING) {
+		result = -EBUSY;
+		goto unlock;
+	}
 	if (!timeri->cticks)
 		timeri->cticks = 1;
 	timeri->pticks = 0;
 	result = snd_timer_start1(timer, timeri, timer->sticks);
+ unlock:
 	spin_unlock_irqrestore(&timer->lock, flags);
 	snd_timer_notify1(timeri, SNDRV_TIMER_EVENT_CONTINUE);
 	return result;
@@ -576,7 +606,7 @@ int snd_timer_continue(struct snd_timer_
  */
 int snd_timer_pause(struct snd_timer_instance * timeri)
 {
-	return _snd_timer_stop(timeri, 0, SNDRV_TIMER_EVENT_PAUSE);
+	return _snd_timer_stop(timeri, SNDRV_TIMER_EVENT_PAUSE);
 }
 
 /*
@@ -693,8 +723,8 @@ void snd_timer_interrupt(struct snd_time
 			ti->cticks = ti->ticks;
 		} else {
 			ti->flags &= ~SNDRV_TIMER_IFLG_RUNNING;
-			if (--timer->running)
-				list_del(&ti->active_list);
+			--timer->running;
+			list_del_init(&ti->active_list);
 		}
 		if ((timer->hw.flags & SNDRV_TIMER_HW_TASKLET) ||
 		    (ti->flags & SNDRV_TIMER_IFLG_FAST))
diff -druNp --no-dereference linux-libre-3.18.26-gnu/sound/drivers/dummy.c linux-libre-3.18.27-gnu/sound/drivers/dummy.c
--- linux-libre-3.18.26-gnu/sound/drivers/dummy.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/sound/drivers/dummy.c	2016-02-15 15:47:06.000000000 -0500
@@ -87,7 +87,7 @@ MODULE_PARM_DESC(pcm_substreams, "PCM su
 module_param(fake_buffer, bool, 0444);
 MODULE_PARM_DESC(fake_buffer, "Fake buffer allocations.");
 #ifdef CONFIG_HIGH_RES_TIMERS
-module_param(hrtimer, bool, 0644);
+module_param(hrtimer, bool, 0444);
 MODULE_PARM_DESC(hrtimer, "Use hrtimer as the timer source.");
 #endif
 
diff -druNp --no-dereference linux-libre-3.18.26-gnu/sound/firewire/bebob/bebob_stream.c linux-libre-3.18.27-gnu/sound/firewire/bebob/bebob_stream.c
--- linux-libre-3.18.26-gnu/sound/firewire/bebob/bebob_stream.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/sound/firewire/bebob/bebob_stream.c	2016-02-15 15:47:06.000000000 -0500
@@ -47,14 +47,16 @@ static const unsigned int bridgeco_freq_
 	[6] = 0x07,
 };
 
-static unsigned int
-get_formation_index(unsigned int rate)
+static int
+get_formation_index(unsigned int rate, unsigned int *index)
 {
 	unsigned int i;
 
 	for (i = 0; i < ARRAY_SIZE(snd_bebob_rate_table); i++) {
-		if (snd_bebob_rate_table[i] == rate)
-			return i;
+		if (snd_bebob_rate_table[i] == rate) {
+			*index = i;
+			return 0;
+		}
 	}
 	return -EINVAL;
 }
@@ -367,7 +369,9 @@ make_both_connections(struct snd_bebob *
 		goto end;
 
 	/* confirm params for both streams */
-	index = get_formation_index(rate);
+	err = get_formation_index(rate, &index);
+	if (err < 0)
+		goto end;
 	pcm_channels = bebob->tx_stream_formations[index].pcm;
 	midi_channels = bebob->tx_stream_formations[index].midi;
 	amdtp_stream_set_parameters(&bebob->tx_stream,
diff -druNp --no-dereference linux-libre-3.18.26-gnu/sound/pci/hda/patch_cirrus.c linux-libre-3.18.27-gnu/sound/pci/hda/patch_cirrus.c
--- linux-libre-3.18.26-gnu/sound/pci/hda/patch_cirrus.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/sound/pci/hda/patch_cirrus.c	2016-02-15 15:47:06.000000000 -0500
@@ -614,6 +614,7 @@ enum {
 	CS4208_MAC_AUTO,
 	CS4208_MBA6,
 	CS4208_MBP11,
+	CS4208_MACMINI,
 	CS4208_GPIO0,
 };
 
@@ -621,6 +622,7 @@ static const struct hda_model_fixup cs42
 	{ .id = CS4208_GPIO0, .name = "gpio0" },
 	{ .id = CS4208_MBA6, .name = "mba6" },
 	{ .id = CS4208_MBP11, .name = "mbp11" },
+	{ .id = CS4208_MACMINI, .name = "macmini" },
 	{}
 };
 
@@ -632,6 +634,7 @@ static const struct snd_pci_quirk cs4208
 /* codec SSID matching */
 static const struct snd_pci_quirk cs4208_mac_fixup_tbl[] = {
 	SND_PCI_QUIRK(0x106b, 0x5e00, "MacBookPro 11,2", CS4208_MBP11),
+	SND_PCI_QUIRK(0x106b, 0x6c00, "MacMini 7,1", CS4208_MACMINI),
 	SND_PCI_QUIRK(0x106b, 0x7100, "MacBookAir 6,1", CS4208_MBA6),
 	SND_PCI_QUIRK(0x106b, 0x7200, "MacBookAir 6,2", CS4208_MBA6),
 	SND_PCI_QUIRK(0x106b, 0x7b00, "MacBookPro 12,1", CS4208_MBP11),
@@ -666,6 +669,24 @@ static void cs4208_fixup_mac(struct hda_
 	snd_hda_apply_fixup(codec, action);
 }
 
+/* MacMini 7,1 has the inverted jack detection */
+static void cs4208_fixup_macmini(struct hda_codec *codec,
+				 const struct hda_fixup *fix, int action)
+{
+	static const struct hda_pintbl pincfgs[] = {
+		{ 0x18, 0x00ab9150 }, /* mic (audio-in) jack: disable detect */
+		{ 0x21, 0x004be140 }, /* SPDIF: disable detect */
+		{ }
+	};
+
+	if (action == HDA_FIXUP_ACT_PRE_PROBE) {
+		/* HP pin (0x10) has an inverted detection */
+		codec->inv_jack_detect = 1;
+		/* disable the bogus Mic and SPDIF jack detections */
+		snd_hda_apply_pincfgs(codec, pincfgs);
+	}
+}
+
 static int cs4208_spdif_sw_put(struct snd_kcontrol *kcontrol,
 			       struct snd_ctl_elem_value *ucontrol)
 {
@@ -709,6 +730,12 @@ static const struct hda_fixup cs4208_fix
 		.chained = true,
 		.chain_id = CS4208_GPIO0,
 	},
+	[CS4208_MACMINI] = {
+		.type = HDA_FIXUP_FUNC,
+		.v.func = cs4208_fixup_macmini,
+		.chained = true,
+		.chain_id = CS4208_GPIO0,
+	},
 	[CS4208_GPIO0] = {
 		.type = HDA_FIXUP_FUNC,
 		.v.func = cs4208_fixup_gpio0,
diff -druNp --no-dereference linux-libre-3.18.26-gnu/sound/usb/quirks.c linux-libre-3.18.27-gnu/sound/usb/quirks.c
--- linux-libre-3.18.26-gnu/sound/usb/quirks.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/sound/usb/quirks.c	2016-02-15 15:47:06.000000000 -0500
@@ -1108,6 +1108,7 @@ bool snd_usb_get_sample_rate_quirk(struc
 	switch (chip->usb_id) {
 	case USB_ID(0x045E, 0x075D): /* MS Lifecam Cinema  */
 	case USB_ID(0x045E, 0x076D): /* MS Lifecam HD-5000 */
+	case USB_ID(0x045E, 0x076F): /* MS Lifecam HD-6000 */
 	case USB_ID(0x045E, 0x0772): /* MS Lifecam Studio */
 	case USB_ID(0x045E, 0x0779): /* MS Lifecam HD-3000 */
 	case USB_ID(0x04D8, 0xFEEA): /* Benchmark DAC1 Pre */
@@ -1190,8 +1191,12 @@ void snd_usb_set_interface_quirk(struct
 	 * "Playback Design" products need a 50ms delay after setting the
 	 * USB interface.
 	 */
-	if (le16_to_cpu(dev->descriptor.idVendor) == 0x23ba)
+	switch (le16_to_cpu(dev->descriptor.idVendor)) {
+	case 0x23ba: /* Playback Design */
+	case 0x0644: /* TEAC Corp. */
 		mdelay(50);
+		break;
+	}
 }
 
 void snd_usb_ctl_msg_quirk(struct usb_device *dev, unsigned int pipe,
@@ -1206,6 +1211,14 @@ void snd_usb_ctl_msg_quirk(struct usb_de
 	    (requesttype & USB_TYPE_MASK) == USB_TYPE_CLASS)
 		mdelay(20);
 
+	/*
+	 * "TEAC Corp." products need a 20ms delay after each
+	 * class compliant request
+	 */
+	if ((le16_to_cpu(dev->descriptor.idVendor) == 0x0644) &&
+	    (requesttype & USB_TYPE_MASK) == USB_TYPE_CLASS)
+		mdelay(20);
+
 	/* Marantz/Denon devices with USB DAC functionality need a delay
 	 * after each class compliant request
 	 */
@@ -1261,6 +1274,8 @@ u64 snd_usb_interface_dsd_format_quirks(
 	case USB_ID(0x20b1, 0x000a): /* Gustard DAC-X20U */
 	case USB_ID(0x20b1, 0x2009): /* DIYINHK DSD DXD 384kHz USB to I2S/DSD */
 	case USB_ID(0x20b1, 0x2023): /* JLsounds I2SoverUSB */
+	case USB_ID(0x20b1, 0x3023): /* Aune X1S 32BIT/384 DSD DAC */
+	case USB_ID(0x2616, 0x0106): /* PS Audio NuWave DAC */
 		if (fp->altsetting == 3)
 			return SNDRV_PCM_FMTBIT_DSD_U32_BE;
 		break;
diff -druNp --no-dereference linux-libre-3.18.26-gnu/tools/lib/traceevent/event-parse.c linux-libre-3.18.27-gnu/tools/lib/traceevent/event-parse.c
--- linux-libre-3.18.26-gnu/tools/lib/traceevent/event-parse.c	2016-01-25 07:00:19.000000000 -0500
+++ linux-libre-3.18.27-gnu/tools/lib/traceevent/event-parse.c	2016-02-15 15:47:06.000000000 -0500
@@ -4399,13 +4399,12 @@ static void pretty_print(struct trace_se
 				    sizeof(long) != 8) {
 					char *p;
 
-					ls = 2;
 					/* make %l into %ll */
-					p = strchr(format, 'l');
-					if (p)
+					if (ls == 1 && (p = strchr(format, 'l')))
 						memmove(p+1, p, strlen(p)+1);
 					else if (strcmp(format, "%p") == 0)
 						strcpy(format, "0x%llx");
+					ls = 2;
 				}
 				switch (ls) {
 				case -2:
