diff -druNp --no-dereference linux-libre-4.4.54-gnu/arch/mips/configs/ip22_defconfig linux-libre-4.4.55-gnu/arch/mips/configs/ip22_defconfig
--- linux-libre-4.4.54-gnu/arch/mips/configs/ip22_defconfig	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/arch/mips/configs/ip22_defconfig	2017-03-18 07:10:23.000000000 -0400
@@ -68,8 +68,8 @@ CONFIG_NETFILTER_NETLINK_QUEUE=m
 CONFIG_NF_CONNTRACK=m
 CONFIG_NF_CONNTRACK_SECMARK=y
 CONFIG_NF_CONNTRACK_EVENTS=y
-CONFIG_NF_CT_PROTO_DCCP=m
-CONFIG_NF_CT_PROTO_UDPLITE=m
+CONFIG_NF_CT_PROTO_DCCP=y
+CONFIG_NF_CT_PROTO_UDPLITE=y
 CONFIG_NF_CONNTRACK_AMANDA=m
 CONFIG_NF_CONNTRACK_FTP=m
 CONFIG_NF_CONNTRACK_H323=m
diff -druNp --no-dereference linux-libre-4.4.54-gnu/arch/mips/configs/ip27_defconfig linux-libre-4.4.55-gnu/arch/mips/configs/ip27_defconfig
--- linux-libre-4.4.54-gnu/arch/mips/configs/ip27_defconfig	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/arch/mips/configs/ip27_defconfig	2017-03-18 07:10:23.000000000 -0400
@@ -134,7 +134,7 @@ CONFIG_LIBFC=m
 CONFIG_SCSI_QLOGIC_1280=y
 CONFIG_SCSI_PMCRAID=m
 CONFIG_SCSI_BFA_FC=m
-CONFIG_SCSI_DH=m
+CONFIG_SCSI_DH=y
 CONFIG_SCSI_DH_RDAC=m
 CONFIG_SCSI_DH_HP_SW=m
 CONFIG_SCSI_DH_EMC=m
@@ -206,7 +206,6 @@ CONFIG_MLX4_EN=m
 # CONFIG_MLX4_DEBUG is not set
 CONFIG_TEHUTI=m
 CONFIG_BNX2X=m
-CONFIG_QLGE=m
 CONFIG_SFC=m
 CONFIG_BE2NET=m
 CONFIG_LIBERTAS_THINFIRM=m
diff -druNp --no-dereference linux-libre-4.4.54-gnu/arch/mips/configs/lemote2f_defconfig linux-libre-4.4.55-gnu/arch/mips/configs/lemote2f_defconfig
--- linux-libre-4.4.54-gnu/arch/mips/configs/lemote2f_defconfig	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/arch/mips/configs/lemote2f_defconfig	2017-03-18 07:10:23.000000000 -0400
@@ -39,7 +39,7 @@ CONFIG_HIBERNATION=y
 CONFIG_PM_STD_PARTITION="/dev/hda3"
 CONFIG_CPU_FREQ=y
 CONFIG_CPU_FREQ_DEBUG=y
-CONFIG_CPU_FREQ_STAT=m
+CONFIG_CPU_FREQ_STAT=y
 CONFIG_CPU_FREQ_STAT_DETAILS=y
 CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
 CONFIG_CPU_FREQ_GOV_POWERSAVE=m
diff -druNp --no-dereference linux-libre-4.4.54-gnu/arch/mips/configs/malta_defconfig linux-libre-4.4.55-gnu/arch/mips/configs/malta_defconfig
--- linux-libre-4.4.54-gnu/arch/mips/configs/malta_defconfig	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/arch/mips/configs/malta_defconfig	2017-03-18 07:10:23.000000000 -0400
@@ -59,8 +59,8 @@ CONFIG_NETFILTER=y
 CONFIG_NF_CONNTRACK=m
 CONFIG_NF_CONNTRACK_SECMARK=y
 CONFIG_NF_CONNTRACK_EVENTS=y
-CONFIG_NF_CT_PROTO_DCCP=m
-CONFIG_NF_CT_PROTO_UDPLITE=m
+CONFIG_NF_CT_PROTO_DCCP=y
+CONFIG_NF_CT_PROTO_UDPLITE=y
 CONFIG_NF_CONNTRACK_AMANDA=m
 CONFIG_NF_CONNTRACK_FTP=m
 CONFIG_NF_CONNTRACK_H323=m
diff -druNp --no-dereference linux-libre-4.4.54-gnu/arch/mips/configs/malta_kvm_defconfig linux-libre-4.4.55-gnu/arch/mips/configs/malta_kvm_defconfig
--- linux-libre-4.4.54-gnu/arch/mips/configs/malta_kvm_defconfig	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/arch/mips/configs/malta_kvm_defconfig	2017-03-18 07:10:23.000000000 -0400
@@ -60,8 +60,8 @@ CONFIG_NETFILTER=y
 CONFIG_NF_CONNTRACK=m
 CONFIG_NF_CONNTRACK_SECMARK=y
 CONFIG_NF_CONNTRACK_EVENTS=y
-CONFIG_NF_CT_PROTO_DCCP=m
-CONFIG_NF_CT_PROTO_UDPLITE=m
+CONFIG_NF_CT_PROTO_DCCP=y
+CONFIG_NF_CT_PROTO_UDPLITE=y
 CONFIG_NF_CONNTRACK_AMANDA=m
 CONFIG_NF_CONNTRACK_FTP=m
 CONFIG_NF_CONNTRACK_H323=m
diff -druNp --no-dereference linux-libre-4.4.54-gnu/arch/mips/configs/malta_kvm_guest_defconfig linux-libre-4.4.55-gnu/arch/mips/configs/malta_kvm_guest_defconfig
--- linux-libre-4.4.54-gnu/arch/mips/configs/malta_kvm_guest_defconfig	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/arch/mips/configs/malta_kvm_guest_defconfig	2017-03-18 07:10:23.000000000 -0400
@@ -59,8 +59,8 @@ CONFIG_NETFILTER=y
 CONFIG_NF_CONNTRACK=m
 CONFIG_NF_CONNTRACK_SECMARK=y
 CONFIG_NF_CONNTRACK_EVENTS=y
-CONFIG_NF_CT_PROTO_DCCP=m
-CONFIG_NF_CT_PROTO_UDPLITE=m
+CONFIG_NF_CT_PROTO_DCCP=y
+CONFIG_NF_CT_PROTO_UDPLITE=y
 CONFIG_NF_CONNTRACK_AMANDA=m
 CONFIG_NF_CONNTRACK_FTP=m
 CONFIG_NF_CONNTRACK_H323=m
diff -druNp --no-dereference linux-libre-4.4.54-gnu/arch/mips/configs/maltaup_xpa_defconfig linux-libre-4.4.55-gnu/arch/mips/configs/maltaup_xpa_defconfig
--- linux-libre-4.4.54-gnu/arch/mips/configs/maltaup_xpa_defconfig	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/arch/mips/configs/maltaup_xpa_defconfig	2017-03-18 07:10:23.000000000 -0400
@@ -61,8 +61,8 @@ CONFIG_NETFILTER=y
 CONFIG_NF_CONNTRACK=m
 CONFIG_NF_CONNTRACK_SECMARK=y
 CONFIG_NF_CONNTRACK_EVENTS=y
-CONFIG_NF_CT_PROTO_DCCP=m
-CONFIG_NF_CT_PROTO_UDPLITE=m
+CONFIG_NF_CT_PROTO_DCCP=y
+CONFIG_NF_CT_PROTO_UDPLITE=y
 CONFIG_NF_CONNTRACK_AMANDA=m
 CONFIG_NF_CONNTRACK_FTP=m
 CONFIG_NF_CONNTRACK_H323=m
diff -druNp --no-dereference linux-libre-4.4.54-gnu/arch/mips/configs/nlm_xlp_defconfig linux-libre-4.4.55-gnu/arch/mips/configs/nlm_xlp_defconfig
--- linux-libre-4.4.54-gnu/arch/mips/configs/nlm_xlp_defconfig	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/arch/mips/configs/nlm_xlp_defconfig	2017-03-18 07:10:23.000000000 -0400
@@ -111,7 +111,7 @@ CONFIG_NETFILTER=y
 CONFIG_NF_CONNTRACK=m
 CONFIG_NF_CONNTRACK_SECMARK=y
 CONFIG_NF_CONNTRACK_EVENTS=y
-CONFIG_NF_CT_PROTO_UDPLITE=m
+CONFIG_NF_CT_PROTO_UDPLITE=y
 CONFIG_NF_CONNTRACK_AMANDA=m
 CONFIG_NF_CONNTRACK_FTP=m
 CONFIG_NF_CONNTRACK_H323=m
diff -druNp --no-dereference linux-libre-4.4.54-gnu/arch/mips/configs/nlm_xlr_defconfig linux-libre-4.4.55-gnu/arch/mips/configs/nlm_xlr_defconfig
--- linux-libre-4.4.54-gnu/arch/mips/configs/nlm_xlr_defconfig	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/arch/mips/configs/nlm_xlr_defconfig	2017-03-18 07:10:23.000000000 -0400
@@ -91,7 +91,7 @@ CONFIG_NETFILTER=y
 CONFIG_NF_CONNTRACK=m
 CONFIG_NF_CONNTRACK_SECMARK=y
 CONFIG_NF_CONNTRACK_EVENTS=y
-CONFIG_NF_CT_PROTO_UDPLITE=m
+CONFIG_NF_CT_PROTO_UDPLITE=y
 CONFIG_NF_CONNTRACK_AMANDA=m
 CONFIG_NF_CONNTRACK_FTP=m
 CONFIG_NF_CONNTRACK_H323=m
diff -druNp --no-dereference linux-libre-4.4.54-gnu/arch/mips/dec/int-handler.S linux-libre-4.4.55-gnu/arch/mips/dec/int-handler.S
--- linux-libre-4.4.54-gnu/arch/mips/dec/int-handler.S	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/arch/mips/dec/int-handler.S	2017-03-18 07:10:23.000000000 -0400
@@ -146,7 +146,25 @@
 		/*
 		 * Find irq with highest priority
 		 */
-		 PTR_LA	t1,cpu_mask_nr_tbl
+		# open coded PTR_LA t1, cpu_mask_nr_tbl
+#if (_MIPS_SZPTR == 32)
+		# open coded la t1, cpu_mask_nr_tbl
+		lui	t1, %hi(cpu_mask_nr_tbl)
+		addiu	t1, %lo(cpu_mask_nr_tbl)
+
+#endif
+#if (_MIPS_SZPTR == 64)
+		# open coded dla t1, cpu_mask_nr_tbl
+		.set	push
+		.set	noat
+		lui	t1, %highest(cpu_mask_nr_tbl)
+		lui	AT, %hi(cpu_mask_nr_tbl)
+		daddiu	t1, t1, %higher(cpu_mask_nr_tbl)
+		daddiu	AT, AT, %lo(cpu_mask_nr_tbl)
+		dsll	t1, 32
+		daddu	t1, t1, AT
+		.set	pop
+#endif
 1:		lw	t2,(t1)
 		nop
 		and	t2,t0
@@ -195,7 +213,25 @@
 		/*
 		 * Find irq with highest priority
 		 */
-		 PTR_LA	t1,asic_mask_nr_tbl
+		# open coded PTR_LA t1,asic_mask_nr_tbl
+#if (_MIPS_SZPTR == 32)
+		# open coded la t1, asic_mask_nr_tbl
+		lui	t1, %hi(asic_mask_nr_tbl)
+		addiu	t1, %lo(asic_mask_nr_tbl)
+
+#endif
+#if (_MIPS_SZPTR == 64)
+		# open coded dla t1, asic_mask_nr_tbl
+		.set	push
+		.set	noat
+		lui	t1, %highest(asic_mask_nr_tbl)
+		lui	AT, %hi(asic_mask_nr_tbl)
+		daddiu	t1, t1, %higher(asic_mask_nr_tbl)
+		daddiu	AT, AT, %lo(asic_mask_nr_tbl)
+		dsll	t1, 32
+		daddu	t1, t1, AT
+		.set	pop
+#endif
 2:		lw	t2,(t1)
 		nop
 		and	t2,t0
diff -druNp --no-dereference linux-libre-4.4.54-gnu/arch/mips/netlogic/common/reset.S linux-libre-4.4.55-gnu/arch/mips/netlogic/common/reset.S
--- linux-libre-4.4.54-gnu/arch/mips/netlogic/common/reset.S	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/arch/mips/netlogic/common/reset.S	2017-03-18 07:10:23.000000000 -0400
@@ -50,7 +50,6 @@
 #include <asm/netlogic/xlp-hal/sys.h>
 #include <asm/netlogic/xlp-hal/cpucontrol.h>
 
-#define CP0_EBASE	$15
 #define SYS_CPU_COHERENT_BASE	CKSEG1ADDR(XLP_DEFAULT_IO_BASE) + \
 			XLP_IO_SYS_OFFSET(0) + XLP_IO_PCI_HDRSZ + \
 			SYS_CPU_NONCOHERENT_MODE * 4
@@ -92,7 +91,7 @@
  * registers. On XLPII CPUs, usual cache instructions work.
  */
 .macro	xlp_flush_l1_dcache
-	mfc0	t0, CP0_EBASE, 0
+	mfc0	t0, CP0_PRID
 	andi	t0, t0, PRID_IMP_MASK
 	slt	t1, t0, 0x1200
 	beqz	t1, 15f
@@ -171,7 +170,7 @@ FEXPORT(nlm_reset_entry)
 	nop
 
 1:	/* Entry point on core wakeup */
-	mfc0	t0, CP0_EBASE, 0	/* processor ID */
+	mfc0	t0, CP0_PRID		/* processor ID */
 	andi	t0, PRID_IMP_MASK
 	li	t1, 0x1500		/* XLP 9xx */
 	beq	t0, t1, 2f		/* does not need to set coherent */
@@ -182,8 +181,8 @@ FEXPORT(nlm_reset_entry)
 	nop
 
 	/* set bit in SYS coherent register for the core */
-	mfc0	t0, CP0_EBASE, 1
-	mfc0	t1, CP0_EBASE, 1
+	mfc0	t0, CP0_EBASE
+	mfc0	t1, CP0_EBASE
 	srl	t1, 5
 	andi	t1, 0x3			/* t1 <- node */
 	li	t2, 0x40000
@@ -232,7 +231,7 @@ EXPORT(nlm_boot_siblings)
 
 	 * NOTE: All GPR contents are lost after the mtcr above!
 	 */
-	mfc0	v0, CP0_EBASE, 1
+	mfc0	v0, CP0_EBASE
 	andi	v0, 0x3ff		/* v0 <- node/core */
 
 	/*
diff -druNp --no-dereference linux-libre-4.4.54-gnu/arch/mips/netlogic/common/smpboot.S linux-libre-4.4.55-gnu/arch/mips/netlogic/common/smpboot.S
--- linux-libre-4.4.54-gnu/arch/mips/netlogic/common/smpboot.S	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/arch/mips/netlogic/common/smpboot.S	2017-03-18 07:10:23.000000000 -0400
@@ -48,8 +48,6 @@
 #include <asm/netlogic/xlp-hal/sys.h>
 #include <asm/netlogic/xlp-hal/cpucontrol.h>
 
-#define CP0_EBASE	$15
-
 	.set	noreorder
 	.set	noat
 	.set	arch=xlr		/* for mfcr/mtcr, XLR is sufficient */
@@ -86,7 +84,7 @@ NESTED(nlm_boot_secondary_cpus, 16, sp)
 	PTR_L	gp, 0(t1)
 
 	/* a0 has the processor id */
-	mfc0	a0, CP0_EBASE, 1
+	mfc0	a0, CP0_EBASE
 	andi	a0, 0x3ff		/* a0 <- node/core */
 	PTR_LA	t0, nlm_early_init_secondary
 	jalr	t0
diff -druNp --no-dereference linux-libre-4.4.54-gnu/arch/mips/ralink/prom.c linux-libre-4.4.55-gnu/arch/mips/ralink/prom.c
--- linux-libre-4.4.54-gnu/arch/mips/ralink/prom.c	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/arch/mips/ralink/prom.c	2017-03-18 07:10:23.000000000 -0400
@@ -30,8 +30,10 @@ const char *get_system_type(void)
 	return soc_info.sys_type;
 }
 
-static __init void prom_init_cmdline(int argc, char **argv)
+static __init void prom_init_cmdline(void)
 {
+	int argc;
+	char **argv;
 	int i;
 
 	pr_debug("prom: fw_arg0=%08x fw_arg1=%08x fw_arg2=%08x fw_arg3=%08x\n",
@@ -60,14 +62,11 @@ static __init void prom_init_cmdline(int
 
 void __init prom_init(void)
 {
-	int argc;
-	char **argv;
-
 	prom_soc_init(&soc_info);
 
 	pr_info("SoC Type: %s\n", get_system_type());
 
-	prom_init_cmdline(argc, argv);
+	prom_init_cmdline();
 }
 
 void __init prom_free_prom_memory(void)
diff -druNp --no-dereference linux-libre-4.4.54-gnu/arch/mips/ralink/rt288x.c linux-libre-4.4.55-gnu/arch/mips/ralink/rt288x.c
--- linux-libre-4.4.54-gnu/arch/mips/ralink/rt288x.c	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/arch/mips/ralink/rt288x.c	2017-03-18 07:10:23.000000000 -0400
@@ -40,16 +40,6 @@ static struct rt2880_pmx_group rt2880_pi
 	{ 0 }
 };
 
-static void rt288x_wdt_reset(void)
-{
-	u32 t;
-
-	/* enable WDT reset output on pin SRAM_CS_N */
-	t = rt_sysc_r32(SYSC_REG_CLKCFG);
-	t |= CLKCFG_SRAM_CS_N_WDT;
-	rt_sysc_w32(t, SYSC_REG_CLKCFG);
-}
-
 void __init ralink_clk_init(void)
 {
 	unsigned long cpu_rate, wmac_rate = 40000000;
diff -druNp --no-dereference linux-libre-4.4.54-gnu/arch/mips/ralink/rt305x.c linux-libre-4.4.55-gnu/arch/mips/ralink/rt305x.c
--- linux-libre-4.4.54-gnu/arch/mips/ralink/rt305x.c	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/arch/mips/ralink/rt305x.c	2017-03-18 07:10:23.000000000 -0400
@@ -89,17 +89,6 @@ static struct rt2880_pmx_group rt5350_pi
 	{ 0 }
 };
 
-static void rt305x_wdt_reset(void)
-{
-	u32 t;
-
-	/* enable WDT reset output on pin SRAM_CS_N */
-	t = rt_sysc_r32(SYSC_REG_SYSTEM_CONFIG);
-	t |= RT305X_SYSCFG_SRAM_CS0_MODE_WDT <<
-		RT305X_SYSCFG_SRAM_CS0_MODE_SHIFT;
-	rt_sysc_w32(t, SYSC_REG_SYSTEM_CONFIG);
-}
-
 static unsigned long rt5350_get_mem_size(void)
 {
 	void __iomem *sysc = (void __iomem *) KSEG1ADDR(RT305X_SYSC_BASE);
diff -druNp --no-dereference linux-libre-4.4.54-gnu/arch/mips/ralink/rt3883.c linux-libre-4.4.55-gnu/arch/mips/ralink/rt3883.c
--- linux-libre-4.4.54-gnu/arch/mips/ralink/rt3883.c	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/arch/mips/ralink/rt3883.c	2017-03-18 07:10:23.000000000 -0400
@@ -63,16 +63,6 @@ static struct rt2880_pmx_group rt3883_pi
 	{ 0 }
 };
 
-static void rt3883_wdt_reset(void)
-{
-	u32 t;
-
-	/* enable WDT reset output on GPIO 2 */
-	t = rt_sysc_r32(RT3883_SYSC_REG_SYSCFG1);
-	t |= RT3883_SYSCFG1_GPIO2_AS_WDT_OUT;
-	rt_sysc_w32(t, RT3883_SYSC_REG_SYSCFG1);
-}
-
 void __init ralink_clk_init(void)
 {
 	unsigned long cpu_rate, sys_rate;
diff -druNp --no-dereference linux-libre-4.4.54-gnu/arch/mips/sgi-ip22/Platform linux-libre-4.4.55-gnu/arch/mips/sgi-ip22/Platform
--- linux-libre-4.4.54-gnu/arch/mips/sgi-ip22/Platform	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/arch/mips/sgi-ip22/Platform	2017-03-18 07:10:23.000000000 -0400
@@ -25,7 +25,7 @@ endif
 # Simplified: what IP22 does at 128MB+ in ksegN, IP28 does at 512MB+ in xkphys
 #
 ifdef CONFIG_SGI_IP28
-  ifeq ($(call cc-option-yn,-mr10k-cache-barrier=store), n)
+  ifeq ($(call cc-option-yn,-march=r10000 -mr10k-cache-barrier=store), n)
       $(error gcc doesn't support needed option -mr10k-cache-barrier=store)
   endif
 endif
diff -druNp --no-dereference linux-libre-4.4.54-gnu/arch/powerpc/lib/sstep.c linux-libre-4.4.55-gnu/arch/powerpc/lib/sstep.c
--- linux-libre-4.4.54-gnu/arch/powerpc/lib/sstep.c	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/arch/powerpc/lib/sstep.c	2017-03-18 07:10:23.000000000 -0400
@@ -1806,8 +1806,6 @@ int __kprobes emulate_step(struct pt_reg
 		goto instr_done;
 
 	case LARX:
-		if (regs->msr & MSR_LE)
-			return 0;
 		if (op.ea & (size - 1))
 			break;		/* can't handle misaligned */
 		err = -EFAULT;
@@ -1829,8 +1827,6 @@ int __kprobes emulate_step(struct pt_reg
 		goto ldst_done;
 
 	case STCX:
-		if (regs->msr & MSR_LE)
-			return 0;
 		if (op.ea & (size - 1))
 			break;		/* can't handle misaligned */
 		err = -EFAULT;
@@ -1854,8 +1850,6 @@ int __kprobes emulate_step(struct pt_reg
 		goto ldst_done;
 
 	case LOAD:
-		if (regs->msr & MSR_LE)
-			return 0;
 		err = read_mem(&regs->gpr[op.reg], op.ea, size, regs);
 		if (!err) {
 			if (op.type & SIGNEXT)
@@ -1867,8 +1861,6 @@ int __kprobes emulate_step(struct pt_reg
 
 #ifdef CONFIG_PPC_FPU
 	case LOAD_FP:
-		if (regs->msr & MSR_LE)
-			return 0;
 		if (size == 4)
 			err = do_fp_load(op.reg, do_lfs, op.ea, size, regs);
 		else
@@ -1877,15 +1869,11 @@ int __kprobes emulate_step(struct pt_reg
 #endif
 #ifdef CONFIG_ALTIVEC
 	case LOAD_VMX:
-		if (regs->msr & MSR_LE)
-			return 0;
 		err = do_vec_load(op.reg, do_lvx, op.ea & ~0xfUL, regs);
 		goto ldst_done;
 #endif
 #ifdef CONFIG_VSX
 	case LOAD_VSX:
-		if (regs->msr & MSR_LE)
-			return 0;
 		err = do_vsx_load(op.reg, do_lxvd2x, op.ea, regs);
 		goto ldst_done;
 #endif
@@ -1908,8 +1896,6 @@ int __kprobes emulate_step(struct pt_reg
 		goto instr_done;
 
 	case STORE:
-		if (regs->msr & MSR_LE)
-			return 0;
 		if ((op.type & UPDATE) && size == sizeof(long) &&
 		    op.reg == 1 && op.update_reg == 1 &&
 		    !(regs->msr & MSR_PR) &&
@@ -1922,8 +1908,6 @@ int __kprobes emulate_step(struct pt_reg
 
 #ifdef CONFIG_PPC_FPU
 	case STORE_FP:
-		if (regs->msr & MSR_LE)
-			return 0;
 		if (size == 4)
 			err = do_fp_store(op.reg, do_stfs, op.ea, size, regs);
 		else
@@ -1932,15 +1916,11 @@ int __kprobes emulate_step(struct pt_reg
 #endif
 #ifdef CONFIG_ALTIVEC
 	case STORE_VMX:
-		if (regs->msr & MSR_LE)
-			return 0;
 		err = do_vec_store(op.reg, do_stvx, op.ea & ~0xfUL, regs);
 		goto ldst_done;
 #endif
 #ifdef CONFIG_VSX
 	case STORE_VSX:
-		if (regs->msr & MSR_LE)
-			return 0;
 		err = do_vsx_store(op.reg, do_stxvd2x, op.ea, regs);
 		goto ldst_done;
 #endif
diff -druNp --no-dereference linux-libre-4.4.54-gnu/arch/s390/kernel/crash_dump.c linux-libre-4.4.55-gnu/arch/s390/kernel/crash_dump.c
--- linux-libre-4.4.54-gnu/arch/s390/kernel/crash_dump.c	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/arch/s390/kernel/crash_dump.c	2017-03-18 07:10:23.000000000 -0400
@@ -23,6 +23,8 @@
 #define PTR_SUB(x, y) (((char *) (x)) - ((unsigned long) (y)))
 #define PTR_DIFF(x, y) ((unsigned long)(((char *) (x)) - ((unsigned long) (y))))
 
+#define LINUX_NOTE_NAME "LINUX"
+
 static struct memblock_region oldmem_region;
 
 static struct memblock_type oldmem_type = {
@@ -312,7 +314,7 @@ static void *nt_fpregset(void *ptr, stru
 static void *nt_s390_timer(void *ptr, struct save_area *sa)
 {
 	return nt_init(ptr, NT_S390_TIMER, &sa->timer, sizeof(sa->timer),
-			 KEXEC_CORE_NOTE_NAME);
+			 LINUX_NOTE_NAME);
 }
 
 /*
@@ -321,7 +323,7 @@ static void *nt_s390_timer(void *ptr, st
 static void *nt_s390_tod_cmp(void *ptr, struct save_area *sa)
 {
 	return nt_init(ptr, NT_S390_TODCMP, &sa->clk_cmp,
-		       sizeof(sa->clk_cmp), KEXEC_CORE_NOTE_NAME);
+		       sizeof(sa->clk_cmp), LINUX_NOTE_NAME);
 }
 
 /*
@@ -330,7 +332,7 @@ static void *nt_s390_tod_cmp(void *ptr,
 static void *nt_s390_tod_preg(void *ptr, struct save_area *sa)
 {
 	return nt_init(ptr, NT_S390_TODPREG, &sa->tod_reg,
-		       sizeof(sa->tod_reg), KEXEC_CORE_NOTE_NAME);
+		       sizeof(sa->tod_reg), LINUX_NOTE_NAME);
 }
 
 /*
@@ -339,7 +341,7 @@ static void *nt_s390_tod_preg(void *ptr,
 static void *nt_s390_ctrs(void *ptr, struct save_area *sa)
 {
 	return nt_init(ptr, NT_S390_CTRS, &sa->ctrl_regs,
-		       sizeof(sa->ctrl_regs), KEXEC_CORE_NOTE_NAME);
+		       sizeof(sa->ctrl_regs), LINUX_NOTE_NAME);
 }
 
 /*
@@ -348,7 +350,7 @@ static void *nt_s390_ctrs(void *ptr, str
 static void *nt_s390_prefix(void *ptr, struct save_area *sa)
 {
 	return nt_init(ptr, NT_S390_PREFIX, &sa->pref_reg,
-			 sizeof(sa->pref_reg), KEXEC_CORE_NOTE_NAME);
+			 sizeof(sa->pref_reg), LINUX_NOTE_NAME);
 }
 
 /*
@@ -357,7 +359,7 @@ static void *nt_s390_prefix(void *ptr, s
 static void *nt_s390_vx_high(void *ptr, __vector128 *vx_regs)
 {
 	return nt_init(ptr, NT_S390_VXRS_HIGH, &vx_regs[16],
-		       16 * sizeof(__vector128), KEXEC_CORE_NOTE_NAME);
+		       16 * sizeof(__vector128), LINUX_NOTE_NAME);
 }
 
 /*
@@ -370,12 +372,12 @@ static void *nt_s390_vx_low(void *ptr, _
 	int i;
 
 	note = (Elf64_Nhdr *)ptr;
-	note->n_namesz = strlen(KEXEC_CORE_NOTE_NAME) + 1;
+	note->n_namesz = strlen(LINUX_NOTE_NAME) + 1;
 	note->n_descsz = 16 * 8;
 	note->n_type = NT_S390_VXRS_LOW;
 	len = sizeof(Elf64_Nhdr);
 
-	memcpy(ptr + len, KEXEC_CORE_NOTE_NAME, note->n_namesz);
+	memcpy(ptr + len, LINUX_NOTE_NAME, note->n_namesz);
 	len = roundup(len + note->n_namesz, 4);
 
 	ptr += len;
diff -druNp --no-dereference linux-libre-4.4.54-gnu/arch/s390/mm/pgtable.c linux-libre-4.4.55-gnu/arch/s390/mm/pgtable.c
--- linux-libre-4.4.54-gnu/arch/s390/mm/pgtable.c	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/arch/s390/mm/pgtable.c	2017-03-18 07:10:23.000000000 -0400
@@ -1237,11 +1237,28 @@ EXPORT_SYMBOL_GPL(s390_reset_cmma);
  */
 bool gmap_test_and_clear_dirty(unsigned long address, struct gmap *gmap)
 {
+	pgd_t *pgd;
+	pud_t *pud;
+	pmd_t *pmd;
 	pte_t *pte;
 	spinlock_t *ptl;
 	bool dirty = false;
 
-	pte = get_locked_pte(gmap->mm, address, &ptl);
+	pgd = pgd_offset(gmap->mm, address);
+	pud = pud_alloc(gmap->mm, pgd, address);
+	if (!pud)
+		return false;
+	pmd = pmd_alloc(gmap->mm, pud, address);
+	if (!pmd)
+		return false;
+	/* We can't run guests backed by huge pages, but userspace can
+	 * still set them up and then try to migrate them without any
+	 * migration support.
+	 */
+	if (pmd_large(*pmd))
+		return true;
+
+	pte = pte_alloc_map_lock(gmap->mm, pmd, address, &ptl);
 	if (unlikely(!pte))
 		return false;
 
diff -druNp --no-dereference linux-libre-4.4.54-gnu/crypto/Makefile linux-libre-4.4.55-gnu/crypto/Makefile
--- linux-libre-4.4.54-gnu/crypto/Makefile	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/crypto/Makefile	2017-03-18 07:10:23.000000000 -0400
@@ -62,6 +62,7 @@ obj-$(CONFIG_CRYPTO_SHA1) += sha1_generi
 obj-$(CONFIG_CRYPTO_SHA256) += sha256_generic.o
 obj-$(CONFIG_CRYPTO_SHA512) += sha512_generic.o
 obj-$(CONFIG_CRYPTO_WP512) += wp512.o
+CFLAGS_wp512.o := $(call cc-option,-fno-schedule-insns)  # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79149
 obj-$(CONFIG_CRYPTO_TGR192) += tgr192.o
 obj-$(CONFIG_CRYPTO_GF128MUL) += gf128mul.o
 obj-$(CONFIG_CRYPTO_ECB) += ecb.o
@@ -85,6 +86,7 @@ obj-$(CONFIG_CRYPTO_BLOWFISH_COMMON) +=
 obj-$(CONFIG_CRYPTO_TWOFISH) += twofish_generic.o
 obj-$(CONFIG_CRYPTO_TWOFISH_COMMON) += twofish_common.o
 obj-$(CONFIG_CRYPTO_SERPENT) += serpent_generic.o
+CFLAGS_serpent_generic.o := $(call cc-option,-fsched-pressure)  # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79149
 obj-$(CONFIG_CRYPTO_AES) += aes_generic.o
 obj-$(CONFIG_CRYPTO_CAMELLIA) += camellia_generic.o
 obj-$(CONFIG_CRYPTO_CAST_COMMON) += cast_common.o
diff -druNp --no-dereference linux-libre-4.4.54-gnu/drivers/acpi/nfit.c linux-libre-4.4.55-gnu/drivers/acpi/nfit.c
--- linux-libre-4.4.54-gnu/drivers/acpi/nfit.c	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/drivers/acpi/nfit.c	2017-03-18 07:10:23.000000000 -0400
@@ -965,7 +965,7 @@ static size_t sizeof_nfit_set_info(int n
 		+ num_mappings * sizeof(struct nfit_set_info_map);
 }
 
-static int cmp_map(const void *m0, const void *m1)
+static int cmp_map_compat(const void *m0, const void *m1)
 {
 	const struct nfit_set_info_map *map0 = m0;
 	const struct nfit_set_info_map *map1 = m1;
@@ -974,6 +974,14 @@ static int cmp_map(const void *m0, const
 			sizeof(u64));
 }
 
+static int cmp_map(const void *m0, const void *m1)
+{
+	const struct nfit_set_info_map *map0 = m0;
+	const struct nfit_set_info_map *map1 = m1;
+
+	return map0->region_offset - map1->region_offset;
+}
+
 /* Retrieve the nth entry referencing this spa */
 static struct acpi_nfit_memory_map *memdev_from_spa(
 		struct acpi_nfit_desc *acpi_desc, u16 range_index, int n)
@@ -1029,6 +1037,12 @@ static int acpi_nfit_init_interleave_set
 	sort(&info->mapping[0], nr, sizeof(struct nfit_set_info_map),
 			cmp_map, NULL);
 	nd_set->cookie = nd_fletcher64(info, sizeof_nfit_set_info(nr), 0);
+
+	/* support namespaces created with the wrong sort order */
+	sort(&info->mapping[0], nr, sizeof(struct nfit_set_info_map),
+			cmp_map_compat, NULL);
+	nd_set->altcookie = nd_fletcher64(info, sizeof_nfit_set_info(nr), 0);
+
 	ndr_desc->nd_set = nd_set;
 	devm_kfree(dev, info);
 
diff -druNp --no-dereference linux-libre-4.4.54-gnu/drivers/md/dm.c linux-libre-4.4.55-gnu/drivers/md/dm.c
--- linux-libre-4.4.54-gnu/drivers/md/dm.c	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/drivers/md/dm.c	2017-03-18 07:10:23.000000000 -0400
@@ -1467,11 +1467,62 @@ void dm_accept_partial_bio(struct bio *b
 }
 EXPORT_SYMBOL_GPL(dm_accept_partial_bio);
 
+/*
+ * Flush current->bio_list when the target map method blocks.
+ * This fixes deadlocks in snapshot and possibly in other targets.
+ */
+struct dm_offload {
+	struct blk_plug plug;
+	struct blk_plug_cb cb;
+};
+
+static void flush_current_bio_list(struct blk_plug_cb *cb, bool from_schedule)
+{
+	struct dm_offload *o = container_of(cb, struct dm_offload, cb);
+	struct bio_list list;
+	struct bio *bio;
+
+	INIT_LIST_HEAD(&o->cb.list);
+
+	if (unlikely(!current->bio_list))
+		return;
+
+	list = *current->bio_list;
+	bio_list_init(current->bio_list);
+
+	while ((bio = bio_list_pop(&list))) {
+		struct bio_set *bs = bio->bi_pool;
+		if (unlikely(!bs) || bs == fs_bio_set) {
+			bio_list_add(current->bio_list, bio);
+			continue;
+		}
+
+		spin_lock(&bs->rescue_lock);
+		bio_list_add(&bs->rescue_list, bio);
+		queue_work(bs->rescue_workqueue, &bs->rescue_work);
+		spin_unlock(&bs->rescue_lock);
+	}
+}
+
+static void dm_offload_start(struct dm_offload *o)
+{
+	blk_start_plug(&o->plug);
+	o->cb.callback = flush_current_bio_list;
+	list_add(&o->cb.list, &current->plug->cb_list);
+}
+
+static void dm_offload_end(struct dm_offload *o)
+{
+	list_del(&o->cb.list);
+	blk_finish_plug(&o->plug);
+}
+
 static void __map_bio(struct dm_target_io *tio)
 {
 	int r;
 	sector_t sector;
 	struct mapped_device *md;
+	struct dm_offload o;
 	struct bio *clone = &tio->clone;
 	struct dm_target *ti = tio->ti;
 
@@ -1484,7 +1535,11 @@ static void __map_bio(struct dm_target_i
 	 */
 	atomic_inc(&tio->io->io_count);
 	sector = clone->bi_iter.bi_sector;
+
+	dm_offload_start(&o);
 	r = ti->type->map(ti, clone);
+	dm_offload_end(&o);
+
 	if (r == DM_MAPIO_REMAPPED) {
 		/* the bio has been remapped so dispatch it */
 
diff -druNp --no-dereference linux-libre-4.4.54-gnu/drivers/mtd/maps/pmcmsp-flash.c linux-libre-4.4.55-gnu/drivers/mtd/maps/pmcmsp-flash.c
--- linux-libre-4.4.54-gnu/drivers/mtd/maps/pmcmsp-flash.c	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/drivers/mtd/maps/pmcmsp-flash.c	2017-03-18 07:10:23.000000000 -0400
@@ -139,15 +139,13 @@ static int __init init_msp_flash(void)
 		}
 
 		msp_maps[i].bankwidth = 1;
-		msp_maps[i].name = kmalloc(7, GFP_KERNEL);
+		msp_maps[i].name = kstrndup(flash_name, 7, GFP_KERNEL);
 		if (!msp_maps[i].name) {
 			iounmap(msp_maps[i].virt);
 			kfree(msp_parts[i]);
 			goto cleanup_loop;
 		}
 
-		msp_maps[i].name = strncpy(msp_maps[i].name, flash_name, 7);
-
 		for (j = 0; j < pcnt; j++) {
 			part_name[5] = '0' + i;
 			part_name[7] = '0' + j;
diff -druNp --no-dereference linux-libre-4.4.54-gnu/drivers/net/ethernet/ti/cpmac.c linux-libre-4.4.55-gnu/drivers/net/ethernet/ti/cpmac.c
--- linux-libre-4.4.54-gnu/drivers/net/ethernet/ti/cpmac.c	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/drivers/net/ethernet/ti/cpmac.c	2017-03-18 07:10:23.000000000 -0400
@@ -1237,7 +1237,7 @@ int cpmac_init(void)
 		goto fail_alloc;
 	}
 
-#warning FIXME: unhardcode gpio&reset bits
+	/* FIXME: unhardcode gpio&reset bits */
 	ar7_gpio_disable(26);
 	ar7_gpio_disable(27);
 	ar7_device_reset(AR7_RESET_BIT_CPMAC_LO);
diff -druNp --no-dereference linux-libre-4.4.54-gnu/drivers/nvdimm/namespace_devs.c linux-libre-4.4.55-gnu/drivers/nvdimm/namespace_devs.c
--- linux-libre-4.4.54-gnu/drivers/nvdimm/namespace_devs.c	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/drivers/nvdimm/namespace_devs.c	2017-03-18 07:10:23.000000000 -0400
@@ -1534,6 +1534,7 @@ static int select_pmem_id(struct nd_regi
 static int find_pmem_label_set(struct nd_region *nd_region,
 		struct nd_namespace_pmem *nspm)
 {
+	u64 altcookie = nd_region_interleave_set_altcookie(nd_region);
 	u64 cookie = nd_region_interleave_set_cookie(nd_region);
 	struct nd_namespace_label *nd_label;
 	u8 select_id[NSLABEL_UUID_LEN];
@@ -1542,8 +1543,10 @@ static int find_pmem_label_set(struct nd
 	int rc = -ENODEV, l;
 	u16 i;
 
-	if (cookie == 0)
+	if (cookie == 0) {
+		dev_dbg(&nd_region->dev, "invalid interleave-set-cookie\n");
 		return -ENXIO;
+	}
 
 	/*
 	 * Find a complete set of labels by uuid.  By definition we can start
@@ -1552,13 +1555,24 @@ static int find_pmem_label_set(struct nd
 	for_each_label(l, nd_label, nd_region->mapping[0].labels) {
 		u64 isetcookie = __le64_to_cpu(nd_label->isetcookie);
 
-		if (isetcookie != cookie)
-			continue;
+		if (isetcookie != cookie) {
+			dev_dbg(&nd_region->dev, "invalid cookie in label: %pUb\n",
+					nd_label->uuid);
+			if (isetcookie != altcookie)
+				continue;
+
+			dev_dbg(&nd_region->dev, "valid altcookie in label: %pUb\n",
+					nd_label->uuid);
+		}
+
+		for (i = 0; nd_region->ndr_mappings; i++) {
+			if (has_uuid_at_pos(nd_region, nd_label->uuid, cookie, i))
+				continue;
+			if (has_uuid_at_pos(nd_region, nd_label->uuid, altcookie, i))
+				continue;
+			break;
+		}
 
-		for (i = 0; nd_region->ndr_mappings; i++)
-			if (!has_uuid_at_pos(nd_region, nd_label->uuid,
-						cookie, i))
-				break;
 		if (i < nd_region->ndr_mappings) {
 			/*
 			 * Give up if we don't find an instance of a
diff -druNp --no-dereference linux-libre-4.4.54-gnu/drivers/nvdimm/nd.h linux-libre-4.4.55-gnu/drivers/nvdimm/nd.h
--- linux-libre-4.4.54-gnu/drivers/nvdimm/nd.h	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/drivers/nvdimm/nd.h	2017-03-18 07:10:23.000000000 -0400
@@ -245,6 +245,7 @@ struct nd_region *to_nd_region(struct de
 int nd_region_to_nstype(struct nd_region *nd_region);
 int nd_region_register_namespaces(struct nd_region *nd_region, int *err);
 u64 nd_region_interleave_set_cookie(struct nd_region *nd_region);
+u64 nd_region_interleave_set_altcookie(struct nd_region *nd_region);
 void nvdimm_bus_lock(struct device *dev);
 void nvdimm_bus_unlock(struct device *dev);
 bool is_nvdimm_bus_locked(struct device *dev);
diff -druNp --no-dereference linux-libre-4.4.54-gnu/drivers/nvdimm/region_devs.c linux-libre-4.4.55-gnu/drivers/nvdimm/region_devs.c
--- linux-libre-4.4.54-gnu/drivers/nvdimm/region_devs.c	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/drivers/nvdimm/region_devs.c	2017-03-18 07:10:23.000000000 -0400
@@ -379,6 +379,15 @@ u64 nd_region_interleave_set_cookie(stru
 	return 0;
 }
 
+u64 nd_region_interleave_set_altcookie(struct nd_region *nd_region)
+{
+	struct nd_interleave_set *nd_set = nd_region->nd_set;
+
+	if (nd_set)
+		return nd_set->altcookie;
+	return 0;
+}
+
 /*
  * Upon successful probe/remove, take/release a reference on the
  * associated interleave set (if present), and plant new btt + namespace
diff -druNp --no-dereference linux-libre-4.4.54-gnu/drivers/scsi/mvsas/mv_sas.c linux-libre-4.4.55-gnu/drivers/scsi/mvsas/mv_sas.c
--- linux-libre-4.4.54-gnu/drivers/scsi/mvsas/mv_sas.c	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/drivers/scsi/mvsas/mv_sas.c	2017-03-18 07:10:23.000000000 -0400
@@ -737,8 +737,8 @@ static int mvs_task_prep(struct sas_task
 			mv_dprintk("device %016llx not ready.\n",
 				SAS_ADDR(dev->sas_addr));
 
-			rc = SAS_PHY_DOWN;
-			return rc;
+		rc = SAS_PHY_DOWN;
+		return rc;
 	}
 	tei.port = dev->port->lldd_port;
 	if (tei.port && !tei.port->port_attached && !tmf) {
diff -druNp --no-dereference linux-libre-4.4.54-gnu/drivers/tty/serial/samsung.c linux-libre-4.4.55-gnu/drivers/tty/serial/samsung.c
--- linux-libre-4.4.54-gnu/drivers/tty/serial/samsung.c	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/drivers/tty/serial/samsung.c	2017-03-18 07:10:23.000000000 -0400
@@ -1030,8 +1030,10 @@ static int s3c64xx_serial_startup(struct
 	if (ourport->dma) {
 		ret = s3c24xx_serial_request_dma(ourport);
 		if (ret < 0) {
-			dev_warn(port->dev, "DMA request failed\n");
-			return ret;
+			dev_warn(port->dev,
+				 "DMA request failed, DMA will not be used\n");
+			devm_kfree(port->dev, ourport->dma);
+			ourport->dma = NULL;
 		}
 	}
 
diff -druNp --no-dereference linux-libre-4.4.54-gnu/drivers/usb/dwc3/gadget.h linux-libre-4.4.55-gnu/drivers/usb/dwc3/gadget.h
--- linux-libre-4.4.54-gnu/drivers/usb/dwc3/gadget.h	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/drivers/usb/dwc3/gadget.h	2017-03-18 07:10:23.000000000 -0400
@@ -28,23 +28,23 @@ struct dwc3;
 #define gadget_to_dwc(g)	(container_of(g, struct dwc3, gadget))
 
 /* DEPCFG parameter 1 */
-#define DWC3_DEPCFG_INT_NUM(n)		((n) << 0)
+#define DWC3_DEPCFG_INT_NUM(n)		(((n) & 0x1f) << 0)
 #define DWC3_DEPCFG_XFER_COMPLETE_EN	(1 << 8)
 #define DWC3_DEPCFG_XFER_IN_PROGRESS_EN	(1 << 9)
 #define DWC3_DEPCFG_XFER_NOT_READY_EN	(1 << 10)
 #define DWC3_DEPCFG_FIFO_ERROR_EN	(1 << 11)
 #define DWC3_DEPCFG_STREAM_EVENT_EN	(1 << 13)
-#define DWC3_DEPCFG_BINTERVAL_M1(n)	((n) << 16)
+#define DWC3_DEPCFG_BINTERVAL_M1(n)	(((n) & 0xff) << 16)
 #define DWC3_DEPCFG_STREAM_CAPABLE	(1 << 24)
-#define DWC3_DEPCFG_EP_NUMBER(n)	((n) << 25)
+#define DWC3_DEPCFG_EP_NUMBER(n)	(((n) & 0x1f) << 25)
 #define DWC3_DEPCFG_BULK_BASED		(1 << 30)
 #define DWC3_DEPCFG_FIFO_BASED		(1 << 31)
 
 /* DEPCFG parameter 0 */
-#define DWC3_DEPCFG_EP_TYPE(n)		((n) << 1)
-#define DWC3_DEPCFG_MAX_PACKET_SIZE(n)	((n) << 3)
-#define DWC3_DEPCFG_FIFO_NUMBER(n)	((n) << 17)
-#define DWC3_DEPCFG_BURST_SIZE(n)	((n) << 22)
+#define DWC3_DEPCFG_EP_TYPE(n)		(((n) & 0x3) << 1)
+#define DWC3_DEPCFG_MAX_PACKET_SIZE(n)	(((n) & 0x7ff) << 3)
+#define DWC3_DEPCFG_FIFO_NUMBER(n)	(((n) & 0x1f) << 17)
+#define DWC3_DEPCFG_BURST_SIZE(n)	(((n) & 0xf) << 22)
 #define DWC3_DEPCFG_DATA_SEQ_NUM(n)	((n) << 26)
 /* This applies for core versions earlier than 1.94a */
 #define DWC3_DEPCFG_IGN_SEQ_NUM		(1 << 31)
diff -druNp --no-dereference linux-libre-4.4.54-gnu/drivers/usb/gadget/function/f_fs.c linux-libre-4.4.55-gnu/drivers/usb/gadget/function/f_fs.c
--- linux-libre-4.4.54-gnu/drivers/usb/gadget/function/f_fs.c	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/drivers/usb/gadget/function/f_fs.c	2017-03-18 07:10:23.000000000 -0400
@@ -1643,11 +1643,14 @@ static int ffs_func_eps_enable(struct ff
 	spin_lock_irqsave(&func->ffs->eps_lock, flags);
 	do {
 		struct usb_endpoint_descriptor *ds;
+		struct usb_ss_ep_comp_descriptor *comp_desc = NULL;
+		int needs_comp_desc = false;
 		int desc_idx;
 
-		if (ffs->gadget->speed == USB_SPEED_SUPER)
+		if (ffs->gadget->speed == USB_SPEED_SUPER) {
 			desc_idx = 2;
-		else if (ffs->gadget->speed == USB_SPEED_HIGH)
+			needs_comp_desc = true;
+		} else if (ffs->gadget->speed == USB_SPEED_HIGH)
 			desc_idx = 1;
 		else
 			desc_idx = 0;
@@ -1664,6 +1667,14 @@ static int ffs_func_eps_enable(struct ff
 
 		ep->ep->driver_data = ep;
 		ep->ep->desc = ds;
+
+		comp_desc = (struct usb_ss_ep_comp_descriptor *)(ds +
+				USB_DT_ENDPOINT_SIZE);
+		ep->ep->maxburst = comp_desc->bMaxBurst + 1;
+
+		if (needs_comp_desc)
+			ep->ep->comp_desc = comp_desc;
+
 		ret = usb_ep_enable(ep->ep);
 		if (likely(!ret)) {
 			epfile->ep = ep;
diff -druNp --no-dereference linux-libre-4.4.54-gnu/drivers/usb/gadget/udc/dummy_hcd.c linux-libre-4.4.55-gnu/drivers/usb/gadget/udc/dummy_hcd.c
--- linux-libre-4.4.54-gnu/drivers/usb/gadget/udc/dummy_hcd.c	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/drivers/usb/gadget/udc/dummy_hcd.c	2017-03-18 07:10:23.000000000 -0400
@@ -1033,6 +1033,8 @@ static int dummy_udc_probe(struct platfo
 	int		rc;
 
 	dum = *((void **)dev_get_platdata(&pdev->dev));
+	/* Clear usb_gadget region for new registration to udc-core */
+	memzero_explicit(&dum->gadget, sizeof(struct usb_gadget));
 	dum->gadget.name = gadget_name;
 	dum->gadget.ops = &dummy_ops;
 	dum->gadget.max_speed = USB_SPEED_SUPER;
diff -druNp --no-dereference linux-libre-4.4.54-gnu/drivers/usb/host/xhci-dbg.c linux-libre-4.4.55-gnu/drivers/usb/host/xhci-dbg.c
--- linux-libre-4.4.54-gnu/drivers/usb/host/xhci-dbg.c	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/drivers/usb/host/xhci-dbg.c	2017-03-18 07:10:23.000000000 -0400
@@ -111,7 +111,7 @@ static void xhci_print_cap_regs(struct x
 	xhci_dbg(xhci, "RTSOFF 0x%x:\n", temp & RTSOFF_MASK);
 
 	/* xhci 1.1 controllers have the HCCPARAMS2 register */
-	if (hci_version > 100) {
+	if (hci_version > 0x100) {
 		temp = readl(&xhci->cap_regs->hcc_params2);
 		xhci_dbg(xhci, "HCC PARAMS2 0x%x:\n", (unsigned int) temp);
 		xhci_dbg(xhci, "  HC %s Force save context capability",
diff -druNp --no-dereference linux-libre-4.4.54-gnu/drivers/usb/host/xhci-plat.c linux-libre-4.4.55-gnu/drivers/usb/host/xhci-plat.c
--- linux-libre-4.4.54-gnu/drivers/usb/host/xhci-plat.c	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/drivers/usb/host/xhci-plat.c	2017-03-18 07:10:23.000000000 -0400
@@ -213,6 +213,8 @@ static int xhci_plat_remove(struct platf
 	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);
 	struct clk *clk = xhci->clk;
 
+	xhci->xhc_state |= XHCI_STATE_REMOVING;
+
 	usb_remove_hcd(xhci->shared_hcd);
 	usb_phy_shutdown(hcd->usb_phy);
 
diff -druNp --no-dereference linux-libre-4.4.54-gnu/drivers/usb/misc/iowarrior.c linux-libre-4.4.55-gnu/drivers/usb/misc/iowarrior.c
--- linux-libre-4.4.54-gnu/drivers/usb/misc/iowarrior.c	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/drivers/usb/misc/iowarrior.c	2017-03-18 07:10:23.000000000 -0400
@@ -787,12 +787,6 @@ static int iowarrior_probe(struct usb_in
 	iface_desc = interface->cur_altsetting;
 	dev->product_id = le16_to_cpu(udev->descriptor.idProduct);
 
-	if (iface_desc->desc.bNumEndpoints < 1) {
-		dev_err(&interface->dev, "Invalid number of endpoints\n");
-		retval = -EINVAL;
-		goto error;
-	}
-
 	/* set up the endpoint information */
 	for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
 		endpoint = &iface_desc->endpoint[i].desc;
@@ -803,6 +797,21 @@ static int iowarrior_probe(struct usb_in
 			/* this one will match for the IOWarrior56 only */
 			dev->int_out_endpoint = endpoint;
 	}
+
+	if (!dev->int_in_endpoint) {
+		dev_err(&interface->dev, "no interrupt-in endpoint found\n");
+		retval = -ENODEV;
+		goto error;
+	}
+
+	if (dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW56) {
+		if (!dev->int_out_endpoint) {
+			dev_err(&interface->dev, "no interrupt-out endpoint found\n");
+			retval = -ENODEV;
+			goto error;
+		}
+	}
+
 	/* we have to check the report_size often, so remember it in the endianness suitable for our machine */
 	dev->report_size = usb_endpoint_maxp(dev->int_in_endpoint);
 	if ((dev->interface->cur_altsetting->desc.bInterfaceNumber == 0) &&
diff -druNp --no-dereference linux-libre-4.4.54-gnu/drivers/usb/serial/digi_acceleport.c linux-libre-4.4.55-gnu/drivers/usb/serial/digi_acceleport.c
--- linux-libre-4.4.54-gnu/drivers/usb/serial/digi_acceleport.c	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/drivers/usb/serial/digi_acceleport.c	2017-03-18 07:10:23.000000000 -0400
@@ -1483,16 +1483,20 @@ static int digi_read_oob_callback(struct
 	struct usb_serial *serial = port->serial;
 	struct tty_struct *tty;
 	struct digi_port *priv = usb_get_serial_port_data(port);
+	unsigned char *buf = urb->transfer_buffer;
 	int opcode, line, status, val;
 	int i;
 	unsigned int rts;
 
+	if (urb->actual_length < 4)
+		return -1;
+
 	/* handle each oob command */
-	for (i = 0; i < urb->actual_length - 3;) {
-		opcode = ((unsigned char *)urb->transfer_buffer)[i++];
-		line = ((unsigned char *)urb->transfer_buffer)[i++];
-		status = ((unsigned char *)urb->transfer_buffer)[i++];
-		val = ((unsigned char *)urb->transfer_buffer)[i++];
+	for (i = 0; i < urb->actual_length - 3; i += 4) {
+		opcode = buf[i];
+		line = buf[i + 1];
+		status = buf[i + 2];
+		val = buf[i + 3];
 
 		dev_dbg(&port->dev, "digi_read_oob_callback: opcode=%d, line=%d, status=%d, val=%d\n",
 			opcode, line, status, val);
diff -druNp --no-dereference linux-libre-4.4.54-gnu/drivers/usb/serial/io_ti.c linux-libre-4.4.55-gnu/drivers/usb/serial/io_ti.c
--- linux-libre-4.4.54-gnu/drivers/usb/serial/io_ti.c	2017-03-15 09:14:19.000000000 -0400
+++ linux-libre-4.4.55-gnu/drivers/usb/serial/io_ti.c	2017-03-18 11:06:42.000000000 -0400
@@ -1674,6 +1674,12 @@ static void edge_interrupt_callback(stru
 	function    = TIUMP_GET_FUNC_FROM_CODE(data[0]);
 	dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__,
 		port_number, function, data[1]);
+
+	if (port_number >= edge_serial->serial->num_ports) {
+		dev_err(dev, "bad port number %d\n", port_number);
+		goto exit;
+	}
+
 	port = edge_serial->serial->port[port_number];
 	edge_port = usb_get_serial_port_data(port);
 	if (!edge_port) {
@@ -1755,7 +1761,7 @@ static void edge_bulk_in_callback(struct
 
 	port_number = edge_port->port->port_number;
 
-	if (edge_port->lsr_event) {
+	if (urb->actual_length > 0 && edge_port->lsr_event) {
 		edge_port->lsr_event = 0;
 		dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n",
 			__func__, port_number, edge_port->lsr_mask, *data);
diff -druNp --no-dereference linux-libre-4.4.54-gnu/drivers/usb/serial/omninet.c linux-libre-4.4.55-gnu/drivers/usb/serial/omninet.c
--- linux-libre-4.4.54-gnu/drivers/usb/serial/omninet.c	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/drivers/usb/serial/omninet.c	2017-03-18 07:10:23.000000000 -0400
@@ -142,12 +142,6 @@ static int omninet_port_remove(struct us
 
 static int omninet_open(struct tty_struct *tty, struct usb_serial_port *port)
 {
-	struct usb_serial	*serial = port->serial;
-	struct usb_serial_port	*wport;
-
-	wport = serial->port[1];
-	tty_port_tty_set(&wport->port, tty);
-
 	return usb_serial_generic_open(tty, port);
 }
 
diff -druNp --no-dereference linux-libre-4.4.54-gnu/drivers/usb/serial/safe_serial.c linux-libre-4.4.55-gnu/drivers/usb/serial/safe_serial.c
--- linux-libre-4.4.54-gnu/drivers/usb/serial/safe_serial.c	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/drivers/usb/serial/safe_serial.c	2017-03-18 07:10:23.000000000 -0400
@@ -205,6 +205,11 @@ static void safe_process_read_urb(struct
 	if (!safe)
 		goto out;
 
+	if (length < 2) {
+		dev_err(&port->dev, "malformed packet\n");
+		return;
+	}
+
 	fcs = fcs_compute10(data, length, CRC10_INITFCS);
 	if (fcs) {
 		dev_err(&port->dev, "%s - bad CRC %x\n", __func__, fcs);
diff -druNp --no-dereference linux-libre-4.4.54-gnu/fs/ext4/inode.c linux-libre-4.4.55-gnu/fs/ext4/inode.c
--- linux-libre-4.4.54-gnu/fs/ext4/inode.c	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/fs/ext4/inode.c	2017-03-18 07:10:23.000000000 -0400
@@ -3573,6 +3573,10 @@ static int ext4_block_truncate_page(hand
 	unsigned blocksize;
 	struct inode *inode = mapping->host;
 
+	/* If we are processing an encrypted inode during orphan list handling */
+	if (ext4_encrypted_inode(inode) && !ext4_has_encryption_key(inode))
+		return 0;
+
 	blocksize = inode->i_sb->s_blocksize;
 	length = blocksize - (offset & (blocksize - 1));
 
diff -druNp --no-dereference linux-libre-4.4.54-gnu/include/linux/libnvdimm.h linux-libre-4.4.55-gnu/include/linux/libnvdimm.h
--- linux-libre-4.4.54-gnu/include/linux/libnvdimm.h	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/include/linux/libnvdimm.h	2017-03-18 07:10:23.000000000 -0400
@@ -83,6 +83,8 @@ struct nd_cmd_desc {
 
 struct nd_interleave_set {
 	u64 cookie;
+	/* compatibility with initial buggy Linux implementation */
+	u64 altcookie;
 };
 
 struct nd_region_desc {
diff -druNp --no-dereference linux-libre-4.4.54-gnu/include/trace/events/syscalls.h linux-libre-4.4.55-gnu/include/trace/events/syscalls.h
--- linux-libre-4.4.54-gnu/include/trace/events/syscalls.h	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/include/trace/events/syscalls.h	2017-03-18 07:10:23.000000000 -0400
@@ -1,5 +1,6 @@
 #undef TRACE_SYSTEM
 #define TRACE_SYSTEM raw_syscalls
+#undef TRACE_INCLUDE_FILE
 #define TRACE_INCLUDE_FILE syscalls
 
 #if !defined(_TRACE_EVENTS_SYSCALLS_H) || defined(TRACE_HEADER_MULTI_READ)
diff -druNp --no-dereference linux-libre-4.4.54-gnu/Makefile linux-libre-4.4.55-gnu/Makefile
--- linux-libre-4.4.54-gnu/Makefile	2017-03-15 08:34:03.000000000 -0400
+++ linux-libre-4.4.55-gnu/Makefile	2017-03-18 10:35:06.000000000 -0400
@@ -1,6 +1,6 @@
 VERSION = 4
 PATCHLEVEL = 4
-SUBLEVEL = 54
+SUBLEVEL = 55
 EXTRAVERSION = -gnu
 NAME = Blurry Fish Butt
 
diff -druNp --no-dereference linux-libre-4.4.54-gnu/mm/memcontrol.c linux-libre-4.4.55-gnu/mm/memcontrol.c
--- linux-libre-4.4.54-gnu/mm/memcontrol.c	2017-03-14 21:57:56.000000000 -0400
+++ linux-libre-4.4.55-gnu/mm/memcontrol.c	2017-03-18 07:10:23.000000000 -0400
@@ -4150,24 +4150,6 @@ static void mem_cgroup_id_get_many(struc
 	atomic_add(n, &memcg->id.ref);
 }
 
-static struct mem_cgroup *mem_cgroup_id_get_online(struct mem_cgroup *memcg)
-{
-	while (!atomic_inc_not_zero(&memcg->id.ref)) {
-		/*
-		 * The root cgroup cannot be destroyed, so it's refcount must
-		 * always be >= 1.
-		 */
-		if (WARN_ON_ONCE(memcg == root_mem_cgroup)) {
-			VM_BUG_ON(1);
-			break;
-		}
-		memcg = parent_mem_cgroup(memcg);
-		if (!memcg)
-			memcg = root_mem_cgroup;
-	}
-	return memcg;
-}
-
 static void mem_cgroup_id_put_many(struct mem_cgroup *memcg, unsigned int n)
 {
 	if (atomic_sub_and_test(n, &memcg->id.ref)) {
@@ -5751,6 +5733,24 @@ static int __init mem_cgroup_init(void)
 subsys_initcall(mem_cgroup_init);
 
 #ifdef CONFIG_MEMCG_SWAP
+static struct mem_cgroup *mem_cgroup_id_get_online(struct mem_cgroup *memcg)
+{
+	while (!atomic_inc_not_zero(&memcg->id.ref)) {
+		/*
+		 * The root cgroup cannot be destroyed, so it's refcount must
+		 * always be >= 1.
+		 */
+		if (WARN_ON_ONCE(memcg == root_mem_cgroup)) {
+			VM_BUG_ON(1);
+			break;
+		}
+		memcg = parent_mem_cgroup(memcg);
+		if (!memcg)
+			memcg = root_mem_cgroup;
+	}
+	return memcg;
+}
+
 /**
  * mem_cgroup_swapout - transfer a memsw charge to swap
  * @page: page whose memsw charge to transfer
