diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/arc/include/asm/bitops.h linux-libre-4.1.5-gnu/arch/arc/include/asm/bitops.h
--- linux-libre-4.1.4-gnu/arch/arc/include/asm/bitops.h	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/arc/include/asm/bitops.h	2015-08-10 15:22:34.000000000 -0400
@@ -18,83 +18,49 @@
 #include <linux/types.h>
 #include <linux/compiler.h>
 #include <asm/barrier.h>
+#ifndef CONFIG_ARC_HAS_LLSC
+#include <asm/smp.h>
+#endif
 
-/*
- * Hardware assisted read-modify-write using ARC700 LLOCK/SCOND insns.
- * The Kconfig glue ensures that in SMP, this is only set if the container
- * SoC/platform has cross-core coherent LLOCK/SCOND
- */
 #if defined(CONFIG_ARC_HAS_LLSC)
 
-static inline void set_bit(unsigned long nr, volatile unsigned long *m)
-{
-	unsigned int temp;
-
-	m += nr >> 5;
-
-	/*
-	 * ARC ISA micro-optimization:
-	 *
-	 * Instructions dealing with bitpos only consider lower 5 bits (0-31)
-	 * e.g (x << 33) is handled like (x << 1) by ASL instruction
-	 *  (mem pointer still needs adjustment to point to next word)
-	 *
-	 * Hence the masking to clamp @nr arg can be elided in general.
-	 *
-	 * However if @nr is a constant (above assumed it in a register),
-	 * and greater than 31, gcc can optimize away (x << 33) to 0,
-	 * as overflow, given the 32-bit ISA. Thus masking needs to be done
-	 * for constant @nr, but no code is generated due to const prop.
-	 */
-	if (__builtin_constant_p(nr))
-		nr &= 0x1f;
-
-	__asm__ __volatile__(
-	"1:	llock   %0, [%1]	\n"
-	"	bset    %0, %0, %2	\n"
-	"	scond   %0, [%1]	\n"
-	"	bnz     1b	\n"
-	: "=&r"(temp)
-	: "r"(m), "ir"(nr)
-	: "cc");
-}
-
-static inline void clear_bit(unsigned long nr, volatile unsigned long *m)
-{
-	unsigned int temp;
-
-	m += nr >> 5;
-
-	if (__builtin_constant_p(nr))
-		nr &= 0x1f;
-
-	__asm__ __volatile__(
-	"1:	llock   %0, [%1]	\n"
-	"	bclr    %0, %0, %2	\n"
-	"	scond   %0, [%1]	\n"
-	"	bnz     1b	\n"
-	: "=&r"(temp)
-	: "r"(m), "ir"(nr)
-	: "cc");
-}
-
-static inline void change_bit(unsigned long nr, volatile unsigned long *m)
-{
-	unsigned int temp;
-
-	m += nr >> 5;
-
-	if (__builtin_constant_p(nr))
-		nr &= 0x1f;
+/*
+ * Hardware assisted Atomic-R-M-W
+ */
 
-	__asm__ __volatile__(
-	"1:	llock   %0, [%1]	\n"
-	"	bxor    %0, %0, %2	\n"
-	"	scond   %0, [%1]	\n"
-	"	bnz     1b		\n"
-	: "=&r"(temp)
-	: "r"(m), "ir"(nr)
-	: "cc");
+#define BIT_OP(op, c_op, asm_op)					\
+static inline void op##_bit(unsigned long nr, volatile unsigned long *m)\
+{									\
+	unsigned int temp;						\
+									\
+	m += nr >> 5;							\
+									\
+	/*								\
+	 * ARC ISA micro-optimization:					\
+	 *								\
+	 * Instructions dealing with bitpos only consider lower 5 bits	\
+	 * e.g (x << 33) is handled like (x << 1) by ASL instruction	\
+	 *  (mem pointer still needs adjustment to point to next word)	\
+	 *								\
+	 * Hence the masking to clamp @nr arg can be elided in general.	\
+	 *								\
+	 * However if @nr is a constant (above assumed in a register),	\
+	 * and greater than 31, gcc can optimize away (x << 33) to 0,	\
+	 * as overflow, given the 32-bit ISA. Thus masking needs to be	\
+	 * done for const @nr, but no code is generated due to gcc	\
+	 * const prop.							\
+	 */								\
+	nr &= 0x1f;							\
+									\
+	__asm__ __volatile__(						\
+	"1:	llock       %0, [%1]		\n"			\
+	"	" #asm_op " %0, %0, %2	\n"				\
+	"	scond       %0, [%1]		\n"			\
+	"	bnz         1b			\n"			\
+	: "=&r"(temp)	/* Early clobber, to prevent reg reuse */	\
+	: "r"(m),	/* Not "m": llock only supports reg direct addr mode */	\
+	  "ir"(nr)							\
+	: "cc");							\
 }
 
 /*
@@ -108,91 +74,37 @@ static inline void change_bit(unsigned l
  * Since ARC lacks a equivalent h/w primitive, the bit is set unconditionally
  * and the old value of bit is returned
  */
-static inline int test_and_set_bit(unsigned long nr, volatile unsigned long *m)
-{
-	unsigned long old, temp;
-
-	m += nr >> 5;
-
-	if (__builtin_constant_p(nr))
-		nr &= 0x1f;
-
-	/*
-	 * Explicit full memory barrier needed before/after as
-	 * LLOCK/SCOND themselves don't provide any such semantics
-	 */
-	smp_mb();
-
-	__asm__ __volatile__(
-	"1:	llock   %0, [%2]	\n"
-	"	bset    %1, %0, %3	\n"
-	"	scond   %1, [%2]	\n"
-	"	bnz     1b		\n"
-	: "=&r"(old), "=&r"(temp)
-	: "r"(m), "ir"(nr)
-	: "cc");
-
-	smp_mb();
-
-	return (old & (1 << nr)) != 0;
-}
-
-static inline int
-test_and_clear_bit(unsigned long nr, volatile unsigned long *m)
-{
-	unsigned int old, temp;
-
-	m += nr >> 5;
-
-	if (__builtin_constant_p(nr))
-		nr &= 0x1f;
-
-	smp_mb();
-
-	__asm__ __volatile__(
-	"1:	llock   %0, [%2]	\n"
-	"	bclr    %1, %0, %3	\n"
-	"	scond   %1, [%2]	\n"
-	"	bnz     1b		\n"
-	: "=&r"(old), "=&r"(temp)
-	: "r"(m), "ir"(nr)
-	: "cc");
-
-	smp_mb();
-
-	return (old & (1 << nr)) != 0;
-}
-
-static inline int
-test_and_change_bit(unsigned long nr, volatile unsigned long *m)
-{
-	unsigned int old, temp;
-
-	m += nr >> 5;
-
-	if (__builtin_constant_p(nr))
-		nr &= 0x1f;
-
-	smp_mb();
-
-	__asm__ __volatile__(
-	"1:	llock   %0, [%2]	\n"
-	"	bxor    %1, %0, %3	\n"
-	"	scond   %1, [%2]	\n"
-	"	bnz     1b		\n"
-	: "=&r"(old), "=&r"(temp)
-	: "r"(m), "ir"(nr)
-	: "cc");
-
-	smp_mb();
-
-	return (old & (1 << nr)) != 0;
+#define TEST_N_BIT_OP(op, c_op, asm_op)					\
+static inline int test_and_##op##_bit(unsigned long nr, volatile unsigned long *m)\
+{									\
+	unsigned long old, temp;					\
+									\
+	m += nr >> 5;							\
+									\
+	nr &= 0x1f;							\
+									\
+	/*								\
+	 * Explicit full memory barrier needed before/after as		\
+	 * LLOCK/SCOND themselves don't provide any such smenatic	\
+	 */								\
+	smp_mb();							\
+									\
+	__asm__ __volatile__(						\
+	"1:	llock       %0, [%2]	\n"				\
+	"	" #asm_op " %1, %0, %3	\n"				\
+	"	scond       %1, [%2]	\n"				\
+	"	bnz         1b		\n"				\
+	: "=&r"(old), "=&r"(temp)					\
+	: "r"(m), "ir"(nr)						\
+	: "cc");							\
+									\
+	smp_mb();							\
+									\
+	return (old & (1 << nr)) != 0;					\
 }
 
 #else	/* !CONFIG_ARC_HAS_LLSC */
 
-#include <asm/smp.h>
-
 /*
  * Non hardware assisted Atomic-R-M-W
  * Locking would change to irq-disabling only (UP) and spinlocks (SMP)
@@ -209,111 +121,37 @@ test_and_change_bit(unsigned long nr, vo
  *             at compile time)
  */
 
-static inline void set_bit(unsigned long nr, volatile unsigned long *m)
-{
-	unsigned long temp, flags;
-	m += nr >> 5;
-
-	if (__builtin_constant_p(nr))
-		nr &= 0x1f;
-
-	bitops_lock(flags);
-
-	temp = *m;
-	*m = temp | (1UL << nr);
-
-	bitops_unlock(flags);
-}
-
-static inline void clear_bit(unsigned long nr, volatile unsigned long *m)
-{
-	unsigned long temp, flags;
-	m += nr >> 5;
-
-	if (__builtin_constant_p(nr))
-		nr &= 0x1f;
-
-	bitops_lock(flags);
-
-	temp = *m;
-	*m = temp & ~(1UL << nr);
-
-	bitops_unlock(flags);
-}
-
-static inline void change_bit(unsigned long nr, volatile unsigned long *m)
-{
-	unsigned long temp, flags;
-	m += nr >> 5;
-
-	if (__builtin_constant_p(nr))
-		nr &= 0x1f;
-
-	bitops_lock(flags);
-
-	temp = *m;
-	*m = temp ^ (1UL << nr);
-
-	bitops_unlock(flags);
-}
-
-static inline int test_and_set_bit(unsigned long nr, volatile unsigned long *m)
-{
-	unsigned long old, flags;
-	m += nr >> 5;
-
-	if (__builtin_constant_p(nr))
-		nr &= 0x1f;
-
-	/*
-	 * spin lock/unlock provide the needed smp_mb() before/after
-	 */
-	bitops_lock(flags);
-
-	old = *m;
-	*m = old | (1 << nr);
-
-	bitops_unlock(flags);
-
-	return (old & (1 << nr)) != 0;
-}
-
-static inline int
-test_and_clear_bit(unsigned long nr, volatile unsigned long *m)
-{
-	unsigned long old, flags;
-	m += nr >> 5;
-
-	if (__builtin_constant_p(nr))
-		nr &= 0x1f;
-
-	bitops_lock(flags);
-
-	old = *m;
-	*m = old & ~(1 << nr);
-
-	bitops_unlock(flags);
-
-	return (old & (1 << nr)) != 0;
+#define BIT_OP(op, c_op, asm_op)					\
+static inline void op##_bit(unsigned long nr, volatile unsigned long *m)\
+{									\
+	unsigned long temp, flags;					\
+	m += nr >> 5;							\
+									\
+	/*								\
+	 * spin lock/unlock provide the needed smp_mb() before/after	\
+	 */								\
+	bitops_lock(flags);						\
+									\
+	temp = *m;							\
+	*m = temp c_op (1UL << (nr & 0x1f));					\
+									\
+	bitops_unlock(flags);						\
 }
 
-static inline int
-test_and_change_bit(unsigned long nr, volatile unsigned long *m)
-{
-	unsigned long old, flags;
-	m += nr >> 5;
-
-	if (__builtin_constant_p(nr))
-		nr &= 0x1f;
-
-	bitops_lock(flags);
-
-	old = *m;
-	*m = old ^ (1 << nr);
-
-	bitops_unlock(flags);
-
-	return (old & (1 << nr)) != 0;
+#define TEST_N_BIT_OP(op, c_op, asm_op)					\
+static inline int test_and_##op##_bit(unsigned long nr, volatile unsigned long *m)\
+{									\
+	unsigned long old, flags;					\
+	m += nr >> 5;							\
+									\
+	bitops_lock(flags);						\
+									\
+	old = *m;							\
+	*m = old c_op (1UL << (nr & 0x1f));				\
+									\
+	bitops_unlock(flags);						\
+									\
+	return (old & (1UL << (nr & 0x1f))) != 0;			\
 }
 
 #endif /* CONFIG_ARC_HAS_LLSC */
@@ -322,86 +160,45 @@ test_and_change_bit(unsigned long nr, vo
  * Non atomic variants
  **************************************/
 
-static inline void __set_bit(unsigned long nr, volatile unsigned long *m)
-{
-	unsigned long temp;
-	m += nr >> 5;
-
-	if (__builtin_constant_p(nr))
-		nr &= 0x1f;
-
-	temp = *m;
-	*m = temp | (1UL << nr);
-}
-
-static inline void __clear_bit(unsigned long nr, volatile unsigned long *m)
-{
-	unsigned long temp;
-	m += nr >> 5;
-
-	if (__builtin_constant_p(nr))
-		nr &= 0x1f;
-
-	temp = *m;
-	*m = temp & ~(1UL << nr);
-}
-
-static inline void __change_bit(unsigned long nr, volatile unsigned long *m)
-{
-	unsigned long temp;
-	m += nr >> 5;
-
-	if (__builtin_constant_p(nr))
-		nr &= 0x1f;
-
-	temp = *m;
-	*m = temp ^ (1UL << nr);
-}
-
-static inline int
-__test_and_set_bit(unsigned long nr, volatile unsigned long *m)
-{
-	unsigned long old;
-	m += nr >> 5;
-
-	if (__builtin_constant_p(nr))
-		nr &= 0x1f;
-
-	old = *m;
-	*m = old | (1 << nr);
-
-	return (old & (1 << nr)) != 0;
+#define __BIT_OP(op, c_op, asm_op)					\
+static inline void __##op##_bit(unsigned long nr, volatile unsigned long *m)	\
+{									\
+	unsigned long temp;						\
+	m += nr >> 5;							\
+									\
+	temp = *m;							\
+	*m = temp c_op (1UL << (nr & 0x1f));				\
 }
 
-static inline int
-__test_and_clear_bit(unsigned long nr, volatile unsigned long *m)
-{
-	unsigned long old;
-	m += nr >> 5;
-
-	if (__builtin_constant_p(nr))
-		nr &= 0x1f;
-
-	old = *m;
-	*m = old & ~(1 << nr);
-
-	return (old & (1 << nr)) != 0;
+#define __TEST_N_BIT_OP(op, c_op, asm_op)				\
+static inline int __test_and_##op##_bit(unsigned long nr, volatile unsigned long *m)\
+{									\
+	unsigned long old;						\
+	m += nr >> 5;							\
+									\
+	old = *m;							\
+	*m = old c_op (1UL << (nr & 0x1f));				\
+									\
+	return (old & (1UL << (nr & 0x1f))) != 0;			\
 }
 
-static inline int
-__test_and_change_bit(unsigned long nr, volatile unsigned long *m)
-{
-	unsigned long old;
-	m += nr >> 5;
-
-	if (__builtin_constant_p(nr))
-		nr &= 0x1f;
-
-	old = *m;
-	*m = old ^ (1 << nr);
+#define BIT_OPS(op, c_op, asm_op)					\
+									\
+	/* set_bit(), clear_bit(), change_bit() */			\
+	BIT_OP(op, c_op, asm_op)					\
+									\
+	/* test_and_set_bit(), test_and_clear_bit(), test_and_change_bit() */\
+	TEST_N_BIT_OP(op, c_op, asm_op)					\
+									\
+	/* __set_bit(), __clear_bit(), __change_bit() */		\
+	__BIT_OP(op, c_op, asm_op)					\
+									\
+	/* __test_and_set_bit(), __test_and_clear_bit(), __test_and_change_bit() */\
+	__TEST_N_BIT_OP(op, c_op, asm_op)
 
-	return (old & (1 << nr)) != 0;
-}
+BIT_OPS(set, |, bset)
+BIT_OPS(clear, & ~, bclr)
+BIT_OPS(change, ^, bxor)
 
 /*
  * This routine doesn't need to be atomic.
@@ -413,10 +210,7 @@ test_bit(unsigned int nr, const volatile
 
 	addr += nr >> 5;
 
-	if (__builtin_constant_p(nr))
-		nr &= 0x1f;
-
-	mask = 1 << nr;
+	mask = 1UL << (nr & 0x1f);
 
 	return ((mask & *addr) != 0);
 }
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/arc/include/asm/ptrace.h linux-libre-4.1.5-gnu/arch/arc/include/asm/ptrace.h
--- linux-libre-4.1.4-gnu/arch/arc/include/asm/ptrace.h	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/arc/include/asm/ptrace.h	2015-08-10 15:22:34.000000000 -0400
@@ -63,7 +63,7 @@ struct callee_regs {
 	long r25, r24, r23, r22, r21, r20, r19, r18, r17, r16, r15, r14, r13;
 };
 
-#define instruction_pointer(regs)	((regs)->ret)
+#define instruction_pointer(regs)	(unsigned long)((regs)->ret)
 #define profile_pc(regs)		instruction_pointer(regs)
 
 /* return 1 if user mode or 0 if kernel mode */
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/arc/Makefile linux-libre-4.1.5-gnu/arch/arc/Makefile
--- linux-libre-4.1.4-gnu/arch/arc/Makefile	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/arc/Makefile	2015-08-10 15:22:34.000000000 -0400
@@ -43,7 +43,8 @@ endif
 
 ifndef CONFIG_CC_OPTIMIZE_FOR_SIZE
 # Generic build system uses -O2, we want -O3
-cflags-y  += -O3
+# Note: No need to add to cflags-y as that happens anyways
+ARCH_CFLAGS += -O3
 endif
 
 # small data is default for elf32 tool-chain. If not usable, disable it
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/arm/boot/dts/am57xx-beagle-x15.dts linux-libre-4.1.5-gnu/arch/arm/boot/dts/am57xx-beagle-x15.dts
--- linux-libre-4.1.4-gnu/arch/arm/boot/dts/am57xx-beagle-x15.dts	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/arm/boot/dts/am57xx-beagle-x15.dts	2015-08-10 15:22:34.000000000 -0400
@@ -544,6 +544,10 @@
 	phy-supply = <&ldousb_reg>;
 };
 
+&usb2_phy2 {
+	phy-supply = <&ldousb_reg>;
+};
+
 &usb1 {
 	dr_mode = "host";
 	pinctrl-names = "default";
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/arm/boot/dts/dra72-evm.dts linux-libre-4.1.5-gnu/arch/arm/boot/dts/dra72-evm.dts
--- linux-libre-4.1.4-gnu/arch/arm/boot/dts/dra72-evm.dts	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/arm/boot/dts/dra72-evm.dts	2015-08-10 15:22:34.000000000 -0400
@@ -497,9 +497,10 @@
 
 &dcan1 {
 	status = "ok";
-	pinctrl-names = "default", "sleep";
-	pinctrl-0 = <&dcan1_pins_default>;
+	pinctrl-names = "default", "sleep", "active";
+	pinctrl-0 = <&dcan1_pins_sleep>;
 	pinctrl-1 = <&dcan1_pins_sleep>;
+	pinctrl-2 = <&dcan1_pins_default>;
 };
 
 &qspi {
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/arm/boot/dts/dra7-evm.dts linux-libre-4.1.5-gnu/arch/arm/boot/dts/dra7-evm.dts
--- linux-libre-4.1.4-gnu/arch/arm/boot/dts/dra7-evm.dts	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/arm/boot/dts/dra7-evm.dts	2015-08-10 15:22:34.000000000 -0400
@@ -686,7 +686,8 @@
 
 &dcan1 {
 	status = "ok";
-	pinctrl-names = "default", "sleep";
-	pinctrl-0 = <&dcan1_pins_default>;
+	pinctrl-names = "default", "sleep", "active";
+	pinctrl-0 = <&dcan1_pins_sleep>;
 	pinctrl-1 = <&dcan1_pins_sleep>;
+	pinctrl-2 = <&dcan1_pins_default>;
 };
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/arm/mach-imx/gpc.c linux-libre-4.1.5-gnu/arch/arm/mach-imx/gpc.c
--- linux-libre-4.1.4-gnu/arch/arm/mach-imx/gpc.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/arm/mach-imx/gpc.c	2015-08-10 15:22:34.000000000 -0400
@@ -291,8 +291,6 @@ void __init imx_gpc_check_dt(void)
 	}
 }
 
-#ifdef CONFIG_PM_GENERIC_DOMAINS
-
 static void _imx6q_pm_pu_power_off(struct generic_pm_domain *genpd)
 {
 	int iso, iso2sw;
@@ -399,7 +397,6 @@ static struct genpd_onecell_data imx_gpc
 static int imx_gpc_genpd_init(struct device *dev, struct regulator *pu_reg)
 {
 	struct clk *clk;
-	bool is_off;
 	int i;
 
 	imx6q_pu_domain.reg = pu_reg;
@@ -416,18 +413,13 @@ static int imx_gpc_genpd_init(struct dev
 	}
 	imx6q_pu_domain.num_clks = i;
 
-	is_off = IS_ENABLED(CONFIG_PM);
-	if (is_off) {
-		_imx6q_pm_pu_power_off(&imx6q_pu_domain.base);
-	} else {
-		/*
-		 * Enable power if compiled without CONFIG_PM in case the
-		 * bootloader disabled it.
-		 */
-		imx6q_pm_pu_power_on(&imx6q_pu_domain.base);
-	}
+	/* Enable power always in case bootloader disabled it. */
+	imx6q_pm_pu_power_on(&imx6q_pu_domain.base);
 
-	pm_genpd_init(&imx6q_pu_domain.base, NULL, is_off);
+	if (!IS_ENABLED(CONFIG_PM_GENERIC_DOMAINS))
+		return 0;
+
+	pm_genpd_init(&imx6q_pu_domain.base, NULL, false);
 	return of_genpd_add_provider_onecell(dev->of_node,
 					     &imx_gpc_onecell_data);
 
@@ -437,13 +429,6 @@ clk_err:
 	return -EINVAL;
 }
 
-#else
-static inline int imx_gpc_genpd_init(struct device *dev, struct regulator *reg)
-{
-	return 0;
-}
-#endif /* CONFIG_PM_GENERIC_DOMAINS */
-
 static int imx_gpc_probe(struct platform_device *pdev)
 {
 	struct regulator *pu_reg;
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/arm/mach-pxa/capc7117.c linux-libre-4.1.5-gnu/arch/arm/mach-pxa/capc7117.c
--- linux-libre-4.1.4-gnu/arch/arm/mach-pxa/capc7117.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/arm/mach-pxa/capc7117.c	2015-08-10 15:22:34.000000000 -0400
@@ -24,6 +24,7 @@
 #include <linux/ata_platform.h>
 #include <linux/serial_8250.h>
 #include <linux/gpio.h>
+#include <linux/regulator/machine.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -144,6 +145,8 @@ static void __init capc7117_init(void)
 
 	capc7117_uarts_init();
 	capc7117_ide_init();
+
+	regulator_has_full_constraints();
 }
 
 MACHINE_START(CAPC7117,
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/arm/mach-pxa/cm-x2xx.c linux-libre-4.1.5-gnu/arch/arm/mach-pxa/cm-x2xx.c
--- linux-libre-4.1.4-gnu/arch/arm/mach-pxa/cm-x2xx.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/arm/mach-pxa/cm-x2xx.c	2015-08-10 15:22:34.000000000 -0400
@@ -13,6 +13,7 @@
 #include <linux/syscore_ops.h>
 #include <linux/irq.h>
 #include <linux/gpio.h>
+#include <linux/regulator/machine.h>
 
 #include <linux/dm9000.h>
 #include <linux/leds.h>
@@ -466,6 +467,8 @@ static void __init cmx2xx_init(void)
 	cmx2xx_init_ac97();
 	cmx2xx_init_touchscreen();
 	cmx2xx_init_leds();
+
+	regulator_has_full_constraints();
 }
 
 static void __init cmx2xx_init_irq(void)
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/arm/mach-pxa/cm-x300.c linux-libre-4.1.5-gnu/arch/arm/mach-pxa/cm-x300.c
--- linux-libre-4.1.4-gnu/arch/arm/mach-pxa/cm-x300.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/arm/mach-pxa/cm-x300.c	2015-08-10 15:22:34.000000000 -0400
@@ -835,6 +835,8 @@ static void __init cm_x300_init(void)
 	cm_x300_init_ac97();
 	cm_x300_init_wi2wi();
 	cm_x300_init_bl();
+
+	regulator_has_full_constraints();
 }
 
 static void __init cm_x300_fixup(struct tag *tags, char **cmdline)
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/arm/mach-pxa/colibri-pxa270.c linux-libre-4.1.5-gnu/arch/arm/mach-pxa/colibri-pxa270.c
--- linux-libre-4.1.4-gnu/arch/arm/mach-pxa/colibri-pxa270.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/arm/mach-pxa/colibri-pxa270.c	2015-08-10 15:22:34.000000000 -0400
@@ -18,6 +18,7 @@
 #include <linux/mtd/partitions.h>
 #include <linux/mtd/physmap.h>
 #include <linux/platform_device.h>
+#include <linux/regulator/machine.h>
 #include <linux/ucb1400.h>
 
 #include <asm/mach/arch.h>
@@ -294,6 +295,8 @@ static void __init colibri_pxa270_init(v
 		printk(KERN_ERR "Illegal colibri_pxa270_baseboard type %d\n",
 				colibri_pxa270_baseboard);
 	}
+
+	regulator_has_full_constraints();
 }
 
 /* The "Income s.r.o. SH-Dmaster PXA270 SBC" board can be booted either
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/arm/mach-pxa/em-x270.c linux-libre-4.1.5-gnu/arch/arm/mach-pxa/em-x270.c
--- linux-libre-4.1.4-gnu/arch/arm/mach-pxa/em-x270.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/arm/mach-pxa/em-x270.c	2015-08-10 15:22:34.000000000 -0400
@@ -1306,6 +1306,8 @@ static void __init em_x270_init(void)
 	em_x270_init_i2c();
 	em_x270_init_camera();
 	em_x270_userspace_consumers_init();
+
+	regulator_has_full_constraints();
 }
 
 MACHINE_START(EM_X270, "Compulab EM-X270")
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/arm/mach-pxa/icontrol.c linux-libre-4.1.5-gnu/arch/arm/mach-pxa/icontrol.c
--- linux-libre-4.1.4-gnu/arch/arm/mach-pxa/icontrol.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/arm/mach-pxa/icontrol.c	2015-08-10 15:22:34.000000000 -0400
@@ -26,6 +26,7 @@
 #include <linux/spi/spi.h>
 #include <linux/spi/pxa2xx_spi.h>
 #include <linux/can/platform/mcp251x.h>
+#include <linux/regulator/machine.h>
 
 #include "generic.h"
 
@@ -185,6 +186,8 @@ static void __init icontrol_init(void)
 	mxm_8x10_mmc_init();
 
 	icontrol_can_init();
+
+	regulator_has_full_constraints();
 }
 
 MACHINE_START(ICONTROL, "iControl/SafeTcam boards using Embedian MXM-8x10 CoM")
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/arm/mach-pxa/trizeps4.c linux-libre-4.1.5-gnu/arch/arm/mach-pxa/trizeps4.c
--- linux-libre-4.1.4-gnu/arch/arm/mach-pxa/trizeps4.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/arm/mach-pxa/trizeps4.c	2015-08-10 15:22:34.000000000 -0400
@@ -26,6 +26,7 @@
 #include <linux/dm9000.h>
 #include <linux/mtd/physmap.h>
 #include <linux/mtd/partitions.h>
+#include <linux/regulator/machine.h>
 #include <linux/i2c/pxa-i2c.h>
 
 #include <asm/types.h>
@@ -534,6 +535,8 @@ static void __init trizeps4_init(void)
 
 	BCR_writew(trizeps_conxs_bcr);
 	board_backlight_power(1);
+
+	regulator_has_full_constraints();
 }
 
 static void __init trizeps4_map_io(void)
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/arm/mach-pxa/vpac270.c linux-libre-4.1.5-gnu/arch/arm/mach-pxa/vpac270.c
--- linux-libre-4.1.4-gnu/arch/arm/mach-pxa/vpac270.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/arm/mach-pxa/vpac270.c	2015-08-10 15:22:34.000000000 -0400
@@ -24,6 +24,7 @@
 #include <linux/dm9000.h>
 #include <linux/ucb1400.h>
 #include <linux/ata_platform.h>
+#include <linux/regulator/machine.h>
 #include <linux/regulator/max1586.h>
 #include <linux/i2c/pxa-i2c.h>
 
@@ -711,6 +712,8 @@ static void __init vpac270_init(void)
 	vpac270_ts_init();
 	vpac270_rtc_init();
 	vpac270_ide_init();
+
+	regulator_has_full_constraints();
 }
 
 MACHINE_START(VPAC270, "Voipac PXA270")
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/arm/mach-pxa/zeus.c linux-libre-4.1.5-gnu/arch/arm/mach-pxa/zeus.c
--- linux-libre-4.1.4-gnu/arch/arm/mach-pxa/zeus.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/arm/mach-pxa/zeus.c	2015-08-10 15:22:34.000000000 -0400
@@ -868,6 +868,8 @@ static void __init zeus_init(void)
 	i2c_register_board_info(0, ARRAY_AND_SIZE(zeus_i2c_devices));
 	pxa2xx_set_spi_info(3, &pxa2xx_spi_ssp3_master_info);
 	spi_register_board_info(zeus_spi_board_info, ARRAY_SIZE(zeus_spi_board_info));
+
+	regulator_has_full_constraints();
 }
 
 static struct map_desc zeus_io_desc[] __initdata = {
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/arm/mm/dma-mapping.c linux-libre-4.1.5-gnu/arch/arm/mm/dma-mapping.c
--- linux-libre-4.1.4-gnu/arch/arm/mm/dma-mapping.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/arm/mm/dma-mapping.c	2015-08-10 15:22:34.000000000 -0400
@@ -1953,7 +1953,7 @@ static int extend_iommu_mapping(struct d
 {
 	int next_bitmap;
 
-	if (mapping->nr_bitmaps > mapping->extensions)
+	if (mapping->nr_bitmaps >= mapping->extensions)
 		return -EINVAL;
 
 	next_bitmap = mapping->nr_bitmaps;
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/arm64/kernel/efi.c linux-libre-4.1.5-gnu/arch/arm64/kernel/efi.c
--- linux-libre-4.1.4-gnu/arch/arm64/kernel/efi.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/arm64/kernel/efi.c	2015-08-10 15:22:34.000000000 -0400
@@ -122,12 +122,12 @@ static int __init uefi_init(void)
 
 	/* Show what we know for posterity */
 	c16 = early_memremap(efi_to_phys(efi.systab->fw_vendor),
-			     sizeof(vendor));
+			     sizeof(vendor) * sizeof(efi_char16_t));
 	if (c16) {
 		for (i = 0; i < (int) sizeof(vendor) - 1 && *c16; ++i)
 			vendor[i] = c16[i];
 		vendor[i] = '\0';
-		early_memunmap(c16, sizeof(vendor));
+		early_memunmap(c16, sizeof(vendor) * sizeof(efi_char16_t));
 	}
 
 	pr_info("EFI v%u.%.02u by %s\n",
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/avr32/mach-at32ap/clock.c linux-libre-4.1.5-gnu/arch/avr32/mach-at32ap/clock.c
--- linux-libre-4.1.4-gnu/arch/avr32/mach-at32ap/clock.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/avr32/mach-at32ap/clock.c	2015-08-10 15:22:34.000000000 -0400
@@ -80,6 +80,9 @@ int clk_enable(struct clk *clk)
 {
 	unsigned long flags;
 
+	if (!clk)
+		return 0;
+
 	spin_lock_irqsave(&clk_lock, flags);
 	__clk_enable(clk);
 	spin_unlock_irqrestore(&clk_lock, flags);
@@ -106,6 +109,9 @@ void clk_disable(struct clk *clk)
 {
 	unsigned long flags;
 
+	if (IS_ERR_OR_NULL(clk))
+		return;
+
 	spin_lock_irqsave(&clk_lock, flags);
 	__clk_disable(clk);
 	spin_unlock_irqrestore(&clk_lock, flags);
@@ -117,6 +123,9 @@ unsigned long clk_get_rate(struct clk *c
 	unsigned long flags;
 	unsigned long rate;
 
+	if (!clk)
+		return 0;
+
 	spin_lock_irqsave(&clk_lock, flags);
 	rate = clk->get_rate(clk);
 	spin_unlock_irqrestore(&clk_lock, flags);
@@ -129,6 +138,9 @@ long clk_round_rate(struct clk *clk, uns
 {
 	unsigned long flags, actual_rate;
 
+	if (!clk)
+		return 0;
+
 	if (!clk->set_rate)
 		return -ENOSYS;
 
@@ -145,6 +157,9 @@ int clk_set_rate(struct clk *clk, unsign
 	unsigned long flags;
 	long ret;
 
+	if (!clk)
+		return 0;
+
 	if (!clk->set_rate)
 		return -ENOSYS;
 
@@ -161,6 +176,9 @@ int clk_set_parent(struct clk *clk, stru
 	unsigned long flags;
 	int ret;
 
+	if (!clk)
+		return 0;
+
 	if (!clk->set_parent)
 		return -ENOSYS;
 
@@ -174,7 +192,7 @@ EXPORT_SYMBOL(clk_set_parent);
 
 struct clk *clk_get_parent(struct clk *clk)
 {
-	return clk->parent;
+	return !clk ? NULL : clk->parent;
 }
 EXPORT_SYMBOL(clk_get_parent);
 
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/mips/include/asm/fpu.h linux-libre-4.1.5-gnu/arch/mips/include/asm/fpu.h
--- linux-libre-4.1.4-gnu/arch/mips/include/asm/fpu.h	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/mips/include/asm/fpu.h	2015-08-10 15:22:34.000000000 -0400
@@ -74,7 +74,7 @@ static inline int __enable_fpu(enum fpu_
 		goto fr_common;
 
 	case FPU_64BIT:
-#if !(defined(CONFIG_CPU_MIPS32_R2) || defined(CONFIG_CPU_MIPS32_R6) \
+#if !(defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR6) \
       || defined(CONFIG_64BIT))
 		/* we only have a 32-bit FPU */
 		return SIGFPE;
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/mips/include/asm/smp.h linux-libre-4.1.5-gnu/arch/mips/include/asm/smp.h
--- linux-libre-4.1.4-gnu/arch/mips/include/asm/smp.h	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/mips/include/asm/smp.h	2015-08-10 15:22:34.000000000 -0400
@@ -23,6 +23,7 @@
 extern int smp_num_siblings;
 extern cpumask_t cpu_sibling_map[];
 extern cpumask_t cpu_core_map[];
+extern cpumask_t cpu_foreign_map;
 
 #define raw_smp_processor_id() (current_thread_info()->cpu)
 
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/mips/Kconfig linux-libre-4.1.5-gnu/arch/mips/Kconfig
--- linux-libre-4.1.4-gnu/arch/mips/Kconfig	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/mips/Kconfig	2015-08-10 15:22:34.000000000 -0400
@@ -1417,6 +1417,7 @@ config CPU_MIPS64_R6
 	select CPU_SUPPORTS_HIGHMEM
 	select CPU_SUPPORTS_MSA
 	select GENERIC_CSUM
+	select MIPS_O32_FP64_SUPPORT if MIPS32_O32
 	help
 	  Choose this option to build a kernel for release 6 or later of the
 	  MIPS64 architecture.  New MIPS processors, starting with the Warrior
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/mips/kernel/smp.c linux-libre-4.1.5-gnu/arch/mips/kernel/smp.c
--- linux-libre-4.1.4-gnu/arch/mips/kernel/smp.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/mips/kernel/smp.c	2015-08-10 15:22:34.000000000 -0400
@@ -63,6 +63,13 @@ EXPORT_SYMBOL(cpu_sibling_map);
 cpumask_t cpu_core_map[NR_CPUS] __read_mostly;
 EXPORT_SYMBOL(cpu_core_map);
 
+/*
+ * A logcal cpu mask containing only one VPE per core to
+ * reduce the number of IPIs on large MT systems.
+ */
+cpumask_t cpu_foreign_map __read_mostly;
+EXPORT_SYMBOL(cpu_foreign_map);
+
 /* representing cpus for which sibling maps can be computed */
 static cpumask_t cpu_sibling_setup_map;
 
@@ -103,6 +110,29 @@ static inline void set_cpu_core_map(int
 	}
 }
 
+/*
+ * Calculate a new cpu_foreign_map mask whenever a
+ * new cpu appears or disappears.
+ */
+static inline void calculate_cpu_foreign_map(void)
+{
+	int i, k, core_present;
+	cpumask_t temp_foreign_map;
+
+	/* Re-calculate the mask */
+	for_each_online_cpu(i) {
+		core_present = 0;
+		for_each_cpu(k, &temp_foreign_map)
+			if (cpu_data[i].package == cpu_data[k].package &&
+			    cpu_data[i].core == cpu_data[k].core)
+				core_present = 1;
+		if (!core_present)
+			cpumask_set_cpu(i, &temp_foreign_map);
+	}
+
+	cpumask_copy(&cpu_foreign_map, &temp_foreign_map);
+}
+
 struct plat_smp_ops *mp_ops;
 EXPORT_SYMBOL(mp_ops);
 
@@ -146,6 +176,8 @@ asmlinkage void start_secondary(void)
 	set_cpu_sibling_map(cpu);
 	set_cpu_core_map(cpu);
 
+	calculate_cpu_foreign_map();
+
 	cpumask_set_cpu(cpu, &cpu_callin_map);
 
 	synchronise_count_slave(cpu);
@@ -173,9 +205,18 @@ void __irq_entry smp_call_function_inter
 static void stop_this_cpu(void *dummy)
 {
 	/*
-	 * Remove this CPU:
+	 * Remove this CPU. Be a bit slow here and
+	 * set the bits for every online CPU so we don't miss
+	 * any IPI whilst taking this VPE down.
 	 */
+
+	cpumask_copy(&cpu_foreign_map, cpu_online_mask);
+
+	/* Make it visible to every other CPU */
+	smp_mb();
+
 	set_cpu_online(smp_processor_id(), false);
+	calculate_cpu_foreign_map();
 	local_irq_disable();
 	while (1);
 }
@@ -197,6 +238,7 @@ void __init smp_prepare_cpus(unsigned in
 	mp_ops->prepare_cpus(max_cpus);
 	set_cpu_sibling_map(0);
 	set_cpu_core_map(0);
+	calculate_cpu_foreign_map();
 #ifndef CONFIG_HOTPLUG_CPU
 	init_cpu_present(cpu_possible_mask);
 #endif
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/mips/math-emu/cp1emu.c linux-libre-4.1.5-gnu/arch/mips/math-emu/cp1emu.c
--- linux-libre-4.1.4-gnu/arch/mips/math-emu/cp1emu.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/mips/math-emu/cp1emu.c	2015-08-10 15:22:34.000000000 -0400
@@ -451,7 +451,7 @@ static int isBranchInstr(struct pt_regs
 			/* Fall through */
 		case jr_op:
 			/* For R6, JR already emulated in jalr_op */
-			if (NO_R6EMU && insn.r_format.opcode == jr_op)
+			if (NO_R6EMU && insn.r_format.func == jr_op)
 				break;
 			*contpc = regs->regs[insn.r_format.rs];
 			return 1;
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/mips/mm/c-r4k.c linux-libre-4.1.5-gnu/arch/mips/mm/c-r4k.c
--- linux-libre-4.1.4-gnu/arch/mips/mm/c-r4k.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/mips/mm/c-r4k.c	2015-08-10 15:22:34.000000000 -0400
@@ -37,6 +37,7 @@
 #include <asm/cacheflush.h> /* for run_uncached() */
 #include <asm/traps.h>
 #include <asm/dma-coherence.h>
+#include <asm/mips-cm.h>
 
 /*
  * Special Variant of smp_call_function for use by cache functions:
@@ -51,9 +52,16 @@ static inline void r4k_on_each_cpu(void
 {
 	preempt_disable();
 
-#ifndef CONFIG_MIPS_MT_SMP
-	smp_call_function(func, info, 1);
-#endif
+	/*
+	 * The Coherent Manager propagates address-based cache ops to other
+	 * cores but not index-based ops. However, r4k_on_each_cpu is used
+	 * in both cases so there is no easy way to tell what kind of op is
+	 * executed to the other cores. The best we can probably do is
+	 * to restrict that call when a CM is not present because both
+	 * CM-based SMP protocols (CMP & CPS) restrict index-based cache ops.
+	 */
+	if (!mips_cm_present())
+		smp_call_function_many(&cpu_foreign_map, func, info, 1);
 	func(info);
 	preempt_enable();
 }
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/parisc/include/asm/pgalloc.h linux-libre-4.1.5-gnu/arch/parisc/include/asm/pgalloc.h
--- linux-libre-4.1.4-gnu/arch/parisc/include/asm/pgalloc.h	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/parisc/include/asm/pgalloc.h	2015-08-10 15:22:34.000000000 -0400
@@ -72,7 +72,7 @@ static inline pmd_t *pmd_alloc_one(struc
 
 static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
 {
-	if(pmd_flag(*pmd) & PxD_FLAG_ATTACHED)
+	if (pmd_flag(*pmd) & PxD_FLAG_ATTACHED) {
 		/*
 		 * This is the permanent pmd attached to the pgd;
 		 * cannot free it.
@@ -81,6 +81,7 @@ static inline void pmd_free(struct mm_st
 		 */
 		mm_inc_nr_pmds(mm);
 		return;
+	}
 	free_pages((unsigned long)pmd, PMD_ORDER);
 }
 
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/parisc/include/asm/pgtable.h linux-libre-4.1.5-gnu/arch/parisc/include/asm/pgtable.h
--- linux-libre-4.1.4-gnu/arch/parisc/include/asm/pgtable.h	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/parisc/include/asm/pgtable.h	2015-08-10 15:22:34.000000000 -0400
@@ -16,7 +16,7 @@
 #include <asm/processor.h>
 #include <asm/cache.h>
 
-extern spinlock_t pa_dbit_lock;
+extern spinlock_t pa_tlb_lock;
 
 /*
  * kern_addr_valid(ADDR) tests if ADDR is pointing to valid kernel
@@ -33,6 +33,19 @@ extern spinlock_t pa_dbit_lock;
  */
 #define kern_addr_valid(addr)	(1)
 
+/* Purge data and instruction TLB entries.  Must be called holding
+ * the pa_tlb_lock.  The TLB purge instructions are slow on SMP
+ * machines since the purge must be broadcast to all CPUs.
+ */
+
+static inline void purge_tlb_entries(struct mm_struct *mm, unsigned long addr)
+{
+	mtsp(mm->context, 1);
+	pdtlb(addr);
+	if (unlikely(split_tlb))
+		pitlb(addr);
+}
+
 /* Certain architectures need to do special things when PTEs
  * within a page table are directly modified.  Thus, the following
  * hook is made available.
@@ -42,15 +55,20 @@ extern spinlock_t pa_dbit_lock;
                 *(pteptr) = (pteval);                           \
         } while(0)
 
-extern void purge_tlb_entries(struct mm_struct *, unsigned long);
+#define pte_inserted(x)						\
+	((pte_val(x) & (_PAGE_PRESENT|_PAGE_ACCESSED))		\
+	 == (_PAGE_PRESENT|_PAGE_ACCESSED))
 
-#define set_pte_at(mm, addr, ptep, pteval)                      \
-	do {                                                    \
+#define set_pte_at(mm, addr, ptep, pteval)			\
+	do {							\
+		pte_t old_pte;					\
 		unsigned long flags;				\
-		spin_lock_irqsave(&pa_dbit_lock, flags);	\
-		set_pte(ptep, pteval);                          \
-		purge_tlb_entries(mm, addr);                    \
-		spin_unlock_irqrestore(&pa_dbit_lock, flags);	\
+		spin_lock_irqsave(&pa_tlb_lock, flags);		\
+		old_pte = *ptep;				\
+		set_pte(ptep, pteval);				\
+		if (pte_inserted(old_pte))			\
+			purge_tlb_entries(mm, addr);		\
+		spin_unlock_irqrestore(&pa_tlb_lock, flags);	\
 	} while (0)
 
 #endif /* !__ASSEMBLY__ */
@@ -268,7 +286,7 @@ extern unsigned long *empty_zero_page;
 
 #define pte_none(x)     (pte_val(x) == 0)
 #define pte_present(x)	(pte_val(x) & _PAGE_PRESENT)
-#define pte_clear(mm,addr,xp)	do { pte_val(*(xp)) = 0; } while (0)
+#define pte_clear(mm, addr, xp)  set_pte_at(mm, addr, xp, __pte(0))
 
 #define pmd_flag(x)	(pmd_val(x) & PxD_FLAG_MASK)
 #define pmd_address(x)	((unsigned long)(pmd_val(x) &~ PxD_FLAG_MASK) << PxD_VALUE_SHIFT)
@@ -435,15 +453,15 @@ static inline int ptep_test_and_clear_yo
 	if (!pte_young(*ptep))
 		return 0;
 
-	spin_lock_irqsave(&pa_dbit_lock, flags);
+	spin_lock_irqsave(&pa_tlb_lock, flags);
 	pte = *ptep;
 	if (!pte_young(pte)) {
-		spin_unlock_irqrestore(&pa_dbit_lock, flags);
+		spin_unlock_irqrestore(&pa_tlb_lock, flags);
 		return 0;
 	}
 	set_pte(ptep, pte_mkold(pte));
 	purge_tlb_entries(vma->vm_mm, addr);
-	spin_unlock_irqrestore(&pa_dbit_lock, flags);
+	spin_unlock_irqrestore(&pa_tlb_lock, flags);
 	return 1;
 }
 
@@ -453,11 +471,12 @@ static inline pte_t ptep_get_and_clear(s
 	pte_t old_pte;
 	unsigned long flags;
 
-	spin_lock_irqsave(&pa_dbit_lock, flags);
+	spin_lock_irqsave(&pa_tlb_lock, flags);
 	old_pte = *ptep;
-	pte_clear(mm,addr,ptep);
-	purge_tlb_entries(mm, addr);
-	spin_unlock_irqrestore(&pa_dbit_lock, flags);
+	set_pte(ptep, __pte(0));
+	if (pte_inserted(old_pte))
+		purge_tlb_entries(mm, addr);
+	spin_unlock_irqrestore(&pa_tlb_lock, flags);
 
 	return old_pte;
 }
@@ -465,10 +484,10 @@ static inline pte_t ptep_get_and_clear(s
 static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
 {
 	unsigned long flags;
-	spin_lock_irqsave(&pa_dbit_lock, flags);
+	spin_lock_irqsave(&pa_tlb_lock, flags);
 	set_pte(ptep, pte_wrprotect(*ptep));
 	purge_tlb_entries(mm, addr);
-	spin_unlock_irqrestore(&pa_dbit_lock, flags);
+	spin_unlock_irqrestore(&pa_tlb_lock, flags);
 }
 
 #define pte_same(A,B)	(pte_val(A) == pte_val(B))
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/parisc/include/asm/tlbflush.h linux-libre-4.1.5-gnu/arch/parisc/include/asm/tlbflush.h
--- linux-libre-4.1.4-gnu/arch/parisc/include/asm/tlbflush.h	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/parisc/include/asm/tlbflush.h	2015-08-10 15:22:34.000000000 -0400
@@ -13,6 +13,9 @@
  * active at any one time on the Merced bus.  This tlb purge
  * synchronisation is fairly lightweight and harmless so we activate
  * it on all systems not just the N class.
+
+ * It is also used to ensure PTE updates are atomic and consistent
+ * with the TLB.
  */
 extern spinlock_t pa_tlb_lock;
 
@@ -24,20 +27,24 @@ extern void flush_tlb_all_local(void *);
 
 #define smp_flush_tlb_all()	flush_tlb_all()
 
+int __flush_tlb_range(unsigned long sid,
+	unsigned long start, unsigned long end);
+
+#define flush_tlb_range(vma, start, end) \
+	__flush_tlb_range((vma)->vm_mm->context, start, end)
+
+#define flush_tlb_kernel_range(start, end) \
+	__flush_tlb_range(0, start, end)
+
 /*
  * flush_tlb_mm()
  *
- * XXX This code is NOT valid for HP-UX compatibility processes,
- * (although it will probably work 99% of the time). HP-UX
- * processes are free to play with the space id's and save them
- * over long periods of time, etc. so we have to preserve the
- * space and just flush the entire tlb. We need to check the
- * personality in order to do that, but the personality is not
- * currently being set correctly.
- *
- * Of course, Linux processes could do the same thing, but
- * we don't support that (and the compilers, dynamic linker,
- * etc. do not do that).
+ * The code to switch to a new context is NOT valid for processes
+ * which play with the space id's.  Thus, we have to preserve the
+ * space and just flush the entire tlb.  However, the compilers,
+ * dynamic linker, etc, do not manipulate space id's, so there
+ * could be a significant performance benefit in switching contexts
+ * and not flushing the whole tlb.
  */
 
 static inline void flush_tlb_mm(struct mm_struct *mm)
@@ -45,10 +52,18 @@ static inline void flush_tlb_mm(struct m
 	BUG_ON(mm == &init_mm); /* Should never happen */
 
 #if 1 || defined(CONFIG_SMP)
+	/* Except for very small threads, flushing the whole TLB is
+	 * faster than using __flush_tlb_range.  The pdtlb and pitlb
+	 * instructions are very slow because of the TLB broadcast.
+	 * It might be faster to do local range flushes on all CPUs
+	 * on PA 2.0 systems.
+	 */
 	flush_tlb_all();
 #else
 	/* FIXME: currently broken, causing space id and protection ids
-	 *  to go out of sync, resulting in faults on userspace accesses.
+	 * to go out of sync, resulting in faults on userspace accesses.
+	 * This approach needs further investigation since running many
+	 * small applications (e.g., GCC testsuite) is faster on HP-UX.
 	 */
 	if (mm) {
 		if (mm->context != 0)
@@ -65,22 +80,12 @@ static inline void flush_tlb_page(struct
 {
 	unsigned long flags, sid;
 
-	/* For one page, it's not worth testing the split_tlb variable */
-
-	mb();
 	sid = vma->vm_mm->context;
 	purge_tlb_start(flags);
 	mtsp(sid, 1);
 	pdtlb(addr);
-	pitlb(addr);
+	if (unlikely(split_tlb))
+		pitlb(addr);
 	purge_tlb_end(flags);
 }
-
-void __flush_tlb_range(unsigned long sid,
-	unsigned long start, unsigned long end);
-
-#define flush_tlb_range(vma,start,end) __flush_tlb_range((vma)->vm_mm->context,start,end)
-
-#define flush_tlb_kernel_range(start, end) __flush_tlb_range(0,start,end)
-
 #endif
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/parisc/kernel/cache.c linux-libre-4.1.5-gnu/arch/parisc/kernel/cache.c
--- linux-libre-4.1.4-gnu/arch/parisc/kernel/cache.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/parisc/kernel/cache.c	2015-08-10 15:22:34.000000000 -0400
@@ -342,12 +342,15 @@ EXPORT_SYMBOL(flush_data_cache_local);
 EXPORT_SYMBOL(flush_kernel_icache_range_asm);
 
 #define FLUSH_THRESHOLD 0x80000 /* 0.5MB */
-int parisc_cache_flush_threshold __read_mostly = FLUSH_THRESHOLD;
+static unsigned long parisc_cache_flush_threshold __read_mostly = FLUSH_THRESHOLD;
+
+#define FLUSH_TLB_THRESHOLD (2*1024*1024) /* 2MB initial TLB threshold */
+static unsigned long parisc_tlb_flush_threshold __read_mostly = FLUSH_TLB_THRESHOLD;
 
 void __init parisc_setup_cache_timing(void)
 {
 	unsigned long rangetime, alltime;
-	unsigned long size;
+	unsigned long size, start;
 
 	alltime = mfctl(16);
 	flush_data_cache();
@@ -364,14 +367,43 @@ void __init parisc_setup_cache_timing(vo
 	/* Racy, but if we see an intermediate value, it's ok too... */
 	parisc_cache_flush_threshold = size * alltime / rangetime;
 
-	parisc_cache_flush_threshold = (parisc_cache_flush_threshold + L1_CACHE_BYTES - 1) &~ (L1_CACHE_BYTES - 1); 
+	parisc_cache_flush_threshold = L1_CACHE_ALIGN(parisc_cache_flush_threshold);
 	if (!parisc_cache_flush_threshold)
 		parisc_cache_flush_threshold = FLUSH_THRESHOLD;
 
 	if (parisc_cache_flush_threshold > cache_info.dc_size)
 		parisc_cache_flush_threshold = cache_info.dc_size;
 
-	printk(KERN_INFO "Setting cache flush threshold to %x (%d CPUs online)\n", parisc_cache_flush_threshold, num_online_cpus());
+	printk(KERN_INFO "Setting cache flush threshold to %lu kB\n",
+		parisc_cache_flush_threshold/1024);
+
+	/* calculate TLB flush threshold */
+
+	alltime = mfctl(16);
+	flush_tlb_all();
+	alltime = mfctl(16) - alltime;
+
+	size = PAGE_SIZE;
+	start = (unsigned long) _text;
+	rangetime = mfctl(16);
+	while (start < (unsigned long) _end) {
+		flush_tlb_kernel_range(start, start + PAGE_SIZE);
+		start += PAGE_SIZE;
+		size += PAGE_SIZE;
+	}
+	rangetime = mfctl(16) - rangetime;
+
+	printk(KERN_DEBUG "Whole TLB flush %lu cycles, flushing %lu bytes %lu cycles\n",
+		alltime, size, rangetime);
+
+	parisc_tlb_flush_threshold = size * alltime / rangetime;
+	parisc_tlb_flush_threshold *= num_online_cpus();
+	parisc_tlb_flush_threshold = PAGE_ALIGN(parisc_tlb_flush_threshold);
+	if (!parisc_tlb_flush_threshold)
+		parisc_tlb_flush_threshold = FLUSH_TLB_THRESHOLD;
+
+	printk(KERN_INFO "Setting TLB flush threshold to %lu kB\n",
+		parisc_tlb_flush_threshold/1024);
 }
 
 extern void purge_kernel_dcache_page_asm(unsigned long);
@@ -403,48 +435,45 @@ void copy_user_page(void *vto, void *vfr
 }
 EXPORT_SYMBOL(copy_user_page);
 
-void purge_tlb_entries(struct mm_struct *mm, unsigned long addr)
-{
-	unsigned long flags;
-
-	/* Note: purge_tlb_entries can be called at startup with
-	   no context.  */
-
-	purge_tlb_start(flags);
-	mtsp(mm->context, 1);
-	pdtlb(addr);
-	pitlb(addr);
-	purge_tlb_end(flags);
-}
-EXPORT_SYMBOL(purge_tlb_entries);
-
-void __flush_tlb_range(unsigned long sid, unsigned long start,
-		       unsigned long end)
+/* __flush_tlb_range()
+ *
+ * returns 1 if all TLBs were flushed.
+ */
+int __flush_tlb_range(unsigned long sid, unsigned long start,
+		      unsigned long end)
 {
-	unsigned long npages;
+	unsigned long flags, size;
 
-	npages = ((end - (start & PAGE_MASK)) + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
-	if (npages >= 512)  /* 2MB of space: arbitrary, should be tuned */
+	size = (end - start);
+	if (size >= parisc_tlb_flush_threshold) {
 		flush_tlb_all();
-	else {
-		unsigned long flags;
+		return 1;
+	}
+
+	/* Purge TLB entries for small ranges using the pdtlb and
+	   pitlb instructions.  These instructions execute locally
+	   but cause a purge request to be broadcast to other TLBs.  */
+	if (likely(!split_tlb)) {
+		while (start < end) {
+			purge_tlb_start(flags);
+			mtsp(sid, 1);
+			pdtlb(start);
+			purge_tlb_end(flags);
+			start += PAGE_SIZE;
+		}
+		return 0;
+	}
 
+	/* split TLB case */
+	while (start < end) {
 		purge_tlb_start(flags);
 		mtsp(sid, 1);
-		if (split_tlb) {
-			while (npages--) {
-				pdtlb(start);
-				pitlb(start);
-				start += PAGE_SIZE;
-			}
-		} else {
-			while (npages--) {
-				pdtlb(start);
-				start += PAGE_SIZE;
-			}
-		}
+		pdtlb(start);
+		pitlb(start);
 		purge_tlb_end(flags);
+		start += PAGE_SIZE;
 	}
+	return 0;
 }
 
 static void cacheflush_h_tmp_function(void *dummy)
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/parisc/kernel/entry.S linux-libre-4.1.5-gnu/arch/parisc/kernel/entry.S
--- linux-libre-4.1.4-gnu/arch/parisc/kernel/entry.S	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/parisc/kernel/entry.S	2015-08-10 15:22:34.000000000 -0400
@@ -45,7 +45,7 @@
 	.level 2.0
 #endif
 
-	.import         pa_dbit_lock,data
+	.import		pa_tlb_lock,data
 
 	/* space_to_prot macro creates a prot id from a space id */
 
@@ -420,8 +420,8 @@
 	SHLREG		%r9,PxD_VALUE_SHIFT,\pmd
 	extru		\va,31-PAGE_SHIFT,ASM_BITS_PER_PTE,\index
 	dep		%r0,31,PAGE_SHIFT,\pmd  /* clear offset */
-	shladd		\index,BITS_PER_PTE_ENTRY,\pmd,\pmd
-	LDREG		%r0(\pmd),\pte		/* pmd is now pte */
+	shladd		\index,BITS_PER_PTE_ENTRY,\pmd,\pmd /* pmd is now pte */
+	LDREG		%r0(\pmd),\pte
 	bb,>=,n		\pte,_PAGE_PRESENT_BIT,\fault
 	.endm
 
@@ -453,57 +453,53 @@
 	L2_ptep		\pgd,\pte,\index,\va,\fault
 	.endm
 
-	/* Acquire pa_dbit_lock lock. */
-	.macro		dbit_lock	spc,tmp,tmp1
+	/* Acquire pa_tlb_lock lock and recheck page is still present. */
+	.macro		tlb_lock	spc,ptp,pte,tmp,tmp1,fault
 #ifdef CONFIG_SMP
 	cmpib,COND(=),n	0,\spc,2f
-	load32		PA(pa_dbit_lock),\tmp
+	load32		PA(pa_tlb_lock),\tmp
 1:	LDCW		0(\tmp),\tmp1
 	cmpib,COND(=)	0,\tmp1,1b
 	nop
+	LDREG		0(\ptp),\pte
+	bb,<,n		\pte,_PAGE_PRESENT_BIT,2f
+	b		\fault
+	stw		 \spc,0(\tmp)
 2:
 #endif
 	.endm
 
-	/* Release pa_dbit_lock lock without reloading lock address. */
-	.macro		dbit_unlock0	spc,tmp
+	/* Release pa_tlb_lock lock without reloading lock address. */
+	.macro		tlb_unlock0	spc,tmp
 #ifdef CONFIG_SMP
 	or,COND(=)	%r0,\spc,%r0
 	stw             \spc,0(\tmp)
 #endif
 	.endm
 
-	/* Release pa_dbit_lock lock. */
-	.macro		dbit_unlock1	spc,tmp
+	/* Release pa_tlb_lock lock. */
+	.macro		tlb_unlock1	spc,tmp
 #ifdef CONFIG_SMP
-	load32		PA(pa_dbit_lock),\tmp
-	dbit_unlock0	\spc,\tmp
+	load32		PA(pa_tlb_lock),\tmp
+	tlb_unlock0	\spc,\tmp
 #endif
 	.endm
 
 	/* Set the _PAGE_ACCESSED bit of the PTE.  Be clever and
 	 * don't needlessly dirty the cache line if it was already set */
-	.macro		update_ptep	spc,ptep,pte,tmp,tmp1
-#ifdef CONFIG_SMP
-	or,COND(=)	%r0,\spc,%r0
-	LDREG		0(\ptep),\pte
-#endif
+	.macro		update_accessed	ptp,pte,tmp,tmp1
 	ldi		_PAGE_ACCESSED,\tmp1
 	or		\tmp1,\pte,\tmp
 	and,COND(<>)	\tmp1,\pte,%r0
-	STREG		\tmp,0(\ptep)
+	STREG		\tmp,0(\ptp)
 	.endm
 
 	/* Set the dirty bit (and accessed bit).  No need to be
 	 * clever, this is only used from the dirty fault */
-	.macro		update_dirty	spc,ptep,pte,tmp
-#ifdef CONFIG_SMP
-	or,COND(=)	%r0,\spc,%r0
-	LDREG		0(\ptep),\pte
-#endif
+	.macro		update_dirty	ptp,pte,tmp
 	ldi		_PAGE_ACCESSED|_PAGE_DIRTY,\tmp
 	or		\tmp,\pte,\pte
-	STREG		\pte,0(\ptep)
+	STREG		\pte,0(\ptp)
 	.endm
 
 	/* bitshift difference between a PFN (based on kernel's PAGE_SIZE)
@@ -1148,14 +1144,14 @@ dtlb_miss_20w:
 
 	L3_ptep		ptp,pte,t0,va,dtlb_check_alias_20w
 
-	dbit_lock	spc,t0,t1
-	update_ptep	spc,ptp,pte,t0,t1
+	tlb_lock	spc,ptp,pte,t0,t1,dtlb_check_alias_20w
+	update_accessed	ptp,pte,t0,t1
 
 	make_insert_tlb	spc,pte,prot
 	
 	idtlbt          pte,prot
-	dbit_unlock1	spc,t0
 
+	tlb_unlock1	spc,t0
 	rfir
 	nop
 
@@ -1174,14 +1170,14 @@ nadtlb_miss_20w:
 
 	L3_ptep		ptp,pte,t0,va,nadtlb_check_alias_20w
 
-	dbit_lock	spc,t0,t1
-	update_ptep	spc,ptp,pte,t0,t1
+	tlb_lock	spc,ptp,pte,t0,t1,nadtlb_check_alias_20w
+	update_accessed	ptp,pte,t0,t1
 
 	make_insert_tlb	spc,pte,prot
 
 	idtlbt          pte,prot
-	dbit_unlock1	spc,t0
 
+	tlb_unlock1	spc,t0
 	rfir
 	nop
 
@@ -1202,20 +1198,20 @@ dtlb_miss_11:
 
 	L2_ptep		ptp,pte,t0,va,dtlb_check_alias_11
 
-	dbit_lock	spc,t0,t1
-	update_ptep	spc,ptp,pte,t0,t1
+	tlb_lock	spc,ptp,pte,t0,t1,dtlb_check_alias_11
+	update_accessed	ptp,pte,t0,t1
 
 	make_insert_tlb_11	spc,pte,prot
 
-	mfsp		%sr1,t0  /* Save sr1 so we can use it in tlb inserts */
+	mfsp		%sr1,t1  /* Save sr1 so we can use it in tlb inserts */
 	mtsp		spc,%sr1
 
 	idtlba		pte,(%sr1,va)
 	idtlbp		prot,(%sr1,va)
 
-	mtsp		t0, %sr1	/* Restore sr1 */
-	dbit_unlock1	spc,t0
+	mtsp		t1, %sr1	/* Restore sr1 */
 
+	tlb_unlock1	spc,t0
 	rfir
 	nop
 
@@ -1235,21 +1231,20 @@ nadtlb_miss_11:
 
 	L2_ptep		ptp,pte,t0,va,nadtlb_check_alias_11
 
-	dbit_lock	spc,t0,t1
-	update_ptep	spc,ptp,pte,t0,t1
+	tlb_lock	spc,ptp,pte,t0,t1,nadtlb_check_alias_11
+	update_accessed	ptp,pte,t0,t1
 
 	make_insert_tlb_11	spc,pte,prot
 
-
-	mfsp		%sr1,t0  /* Save sr1 so we can use it in tlb inserts */
+	mfsp		%sr1,t1  /* Save sr1 so we can use it in tlb inserts */
 	mtsp		spc,%sr1
 
 	idtlba		pte,(%sr1,va)
 	idtlbp		prot,(%sr1,va)
 
-	mtsp		t0, %sr1	/* Restore sr1 */
-	dbit_unlock1	spc,t0
+	mtsp		t1, %sr1	/* Restore sr1 */
 
+	tlb_unlock1	spc,t0
 	rfir
 	nop
 
@@ -1269,16 +1264,16 @@ dtlb_miss_20:
 
 	L2_ptep		ptp,pte,t0,va,dtlb_check_alias_20
 
-	dbit_lock	spc,t0,t1
-	update_ptep	spc,ptp,pte,t0,t1
+	tlb_lock	spc,ptp,pte,t0,t1,dtlb_check_alias_20
+	update_accessed	ptp,pte,t0,t1
 
 	make_insert_tlb	spc,pte,prot
 
-	f_extend	pte,t0
+	f_extend	pte,t1
 
 	idtlbt          pte,prot
-	dbit_unlock1	spc,t0
 
+	tlb_unlock1	spc,t0
 	rfir
 	nop
 
@@ -1297,16 +1292,16 @@ nadtlb_miss_20:
 
 	L2_ptep		ptp,pte,t0,va,nadtlb_check_alias_20
 
-	dbit_lock	spc,t0,t1
-	update_ptep	spc,ptp,pte,t0,t1
+	tlb_lock	spc,ptp,pte,t0,t1,nadtlb_check_alias_20
+	update_accessed	ptp,pte,t0,t1
 
 	make_insert_tlb	spc,pte,prot
 
-	f_extend	pte,t0
+	f_extend	pte,t1
 	
-        idtlbt          pte,prot
-	dbit_unlock1	spc,t0
+	idtlbt		pte,prot
 
+	tlb_unlock1	spc,t0
 	rfir
 	nop
 
@@ -1406,14 +1401,14 @@ itlb_miss_20w:
 
 	L3_ptep		ptp,pte,t0,va,itlb_fault
 
-	dbit_lock	spc,t0,t1
-	update_ptep	spc,ptp,pte,t0,t1
+	tlb_lock	spc,ptp,pte,t0,t1,itlb_fault
+	update_accessed	ptp,pte,t0,t1
 
 	make_insert_tlb	spc,pte,prot
 	
 	iitlbt          pte,prot
-	dbit_unlock1	spc,t0
 
+	tlb_unlock1	spc,t0
 	rfir
 	nop
 
@@ -1430,14 +1425,14 @@ naitlb_miss_20w:
 
 	L3_ptep		ptp,pte,t0,va,naitlb_check_alias_20w
 
-	dbit_lock	spc,t0,t1
-	update_ptep	spc,ptp,pte,t0,t1
+	tlb_lock	spc,ptp,pte,t0,t1,naitlb_check_alias_20w
+	update_accessed	ptp,pte,t0,t1
 
 	make_insert_tlb	spc,pte,prot
 
 	iitlbt          pte,prot
-	dbit_unlock1	spc,t0
 
+	tlb_unlock1	spc,t0
 	rfir
 	nop
 
@@ -1458,20 +1453,20 @@ itlb_miss_11:
 
 	L2_ptep		ptp,pte,t0,va,itlb_fault
 
-	dbit_lock	spc,t0,t1
-	update_ptep	spc,ptp,pte,t0,t1
+	tlb_lock	spc,ptp,pte,t0,t1,itlb_fault
+	update_accessed	ptp,pte,t0,t1
 
 	make_insert_tlb_11	spc,pte,prot
 
-	mfsp		%sr1,t0  /* Save sr1 so we can use it in tlb inserts */
+	mfsp		%sr1,t1  /* Save sr1 so we can use it in tlb inserts */
 	mtsp		spc,%sr1
 
 	iitlba		pte,(%sr1,va)
 	iitlbp		prot,(%sr1,va)
 
-	mtsp		t0, %sr1	/* Restore sr1 */
-	dbit_unlock1	spc,t0
+	mtsp		t1, %sr1	/* Restore sr1 */
 
+	tlb_unlock1	spc,t0
 	rfir
 	nop
 
@@ -1482,20 +1477,20 @@ naitlb_miss_11:
 
 	L2_ptep		ptp,pte,t0,va,naitlb_check_alias_11
 
-	dbit_lock	spc,t0,t1
-	update_ptep	spc,ptp,pte,t0,t1
+	tlb_lock	spc,ptp,pte,t0,t1,naitlb_check_alias_11
+	update_accessed	ptp,pte,t0,t1
 
 	make_insert_tlb_11	spc,pte,prot
 
-	mfsp		%sr1,t0  /* Save sr1 so we can use it in tlb inserts */
+	mfsp		%sr1,t1  /* Save sr1 so we can use it in tlb inserts */
 	mtsp		spc,%sr1
 
 	iitlba		pte,(%sr1,va)
 	iitlbp		prot,(%sr1,va)
 
-	mtsp		t0, %sr1	/* Restore sr1 */
-	dbit_unlock1	spc,t0
+	mtsp		t1, %sr1	/* Restore sr1 */
 
+	tlb_unlock1	spc,t0
 	rfir
 	nop
 
@@ -1516,16 +1511,16 @@ itlb_miss_20:
 
 	L2_ptep		ptp,pte,t0,va,itlb_fault
 
-	dbit_lock	spc,t0,t1
-	update_ptep	spc,ptp,pte,t0,t1
+	tlb_lock	spc,ptp,pte,t0,t1,itlb_fault
+	update_accessed	ptp,pte,t0,t1
 
 	make_insert_tlb	spc,pte,prot
 
-	f_extend	pte,t0	
+	f_extend	pte,t1
 
 	iitlbt          pte,prot
-	dbit_unlock1	spc,t0
 
+	tlb_unlock1	spc,t0
 	rfir
 	nop
 
@@ -1536,16 +1531,16 @@ naitlb_miss_20:
 
 	L2_ptep		ptp,pte,t0,va,naitlb_check_alias_20
 
-	dbit_lock	spc,t0,t1
-	update_ptep	spc,ptp,pte,t0,t1
+	tlb_lock	spc,ptp,pte,t0,t1,naitlb_check_alias_20
+	update_accessed	ptp,pte,t0,t1
 
 	make_insert_tlb	spc,pte,prot
 
-	f_extend	pte,t0
+	f_extend	pte,t1
 
 	iitlbt          pte,prot
-	dbit_unlock1	spc,t0
 
+	tlb_unlock1	spc,t0
 	rfir
 	nop
 
@@ -1568,14 +1563,14 @@ dbit_trap_20w:
 
 	L3_ptep		ptp,pte,t0,va,dbit_fault
 
-	dbit_lock	spc,t0,t1
-	update_dirty	spc,ptp,pte,t1
+	tlb_lock	spc,ptp,pte,t0,t1,dbit_fault
+	update_dirty	ptp,pte,t1
 
 	make_insert_tlb	spc,pte,prot
 		
 	idtlbt          pte,prot
-	dbit_unlock0	spc,t0
 
+	tlb_unlock0	spc,t0
 	rfir
 	nop
 #else
@@ -1588,8 +1583,8 @@ dbit_trap_11:
 
 	L2_ptep		ptp,pte,t0,va,dbit_fault
 
-	dbit_lock	spc,t0,t1
-	update_dirty	spc,ptp,pte,t1
+	tlb_lock	spc,ptp,pte,t0,t1,dbit_fault
+	update_dirty	ptp,pte,t1
 
 	make_insert_tlb_11	spc,pte,prot
 
@@ -1600,8 +1595,8 @@ dbit_trap_11:
 	idtlbp		prot,(%sr1,va)
 
 	mtsp            t1, %sr1     /* Restore sr1 */
-	dbit_unlock0	spc,t0
 
+	tlb_unlock0	spc,t0
 	rfir
 	nop
 
@@ -1612,16 +1607,16 @@ dbit_trap_20:
 
 	L2_ptep		ptp,pte,t0,va,dbit_fault
 
-	dbit_lock	spc,t0,t1
-	update_dirty	spc,ptp,pte,t1
+	tlb_lock	spc,ptp,pte,t0,t1,dbit_fault
+	update_dirty	ptp,pte,t1
 
 	make_insert_tlb	spc,pte,prot
 
 	f_extend	pte,t1
 	
-        idtlbt          pte,prot
-	dbit_unlock0	spc,t0
+	idtlbt		pte,prot
 
+	tlb_unlock0	spc,t0
 	rfir
 	nop
 #endif
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/parisc/kernel/traps.c linux-libre-4.1.5-gnu/arch/parisc/kernel/traps.c
--- linux-libre-4.1.4-gnu/arch/parisc/kernel/traps.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/parisc/kernel/traps.c	2015-08-10 15:22:34.000000000 -0400
@@ -43,10 +43,6 @@
 
 #include "../math-emu/math-emu.h"	/* for handle_fpe() */
 
-#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK)
-DEFINE_SPINLOCK(pa_dbit_lock);
-#endif
-
 static void parisc_show_stack(struct task_struct *task, unsigned long *sp,
 	struct pt_regs *regs);
 
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/powerpc/kernel/idle_power7.S linux-libre-4.1.5-gnu/arch/powerpc/kernel/idle_power7.S
--- linux-libre-4.1.4-gnu/arch/powerpc/kernel/idle_power7.S	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/powerpc/kernel/idle_power7.S	2015-08-10 15:22:34.000000000 -0400
@@ -52,6 +52,22 @@
 	.text
 
 /*
+ * Used by threads when the lock bit of core_idle_state is set.
+ * Threads will spin in HMT_LOW until the lock bit is cleared.
+ * r14 - pointer to core_idle_state
+ * r15 - used to load contents of core_idle_state
+ */
+
+core_idle_lock_held:
+	HMT_LOW
+3:	lwz	r15,0(r14)
+	andi.   r15,r15,PNV_CORE_IDLE_LOCK_BIT
+	bne	3b
+	HMT_MEDIUM
+	lwarx	r15,0,r14
+	blr
+
+/*
  * Pass requested state in r3:
  *	r3 - PNV_THREAD_NAP/SLEEP/WINKLE
  *
@@ -150,6 +166,10 @@ power7_enter_nap_mode:
 	ld	r14,PACA_CORE_IDLE_STATE_PTR(r13)
 lwarx_loop1:
 	lwarx	r15,0,r14
+
+	andi.   r9,r15,PNV_CORE_IDLE_LOCK_BIT
+	bnel	core_idle_lock_held
+
 	andc	r15,r15,r7			/* Clear thread bit */
 
 	andi.	r15,r15,PNV_CORE_IDLE_THREAD_BITS
@@ -294,7 +314,7 @@ lwarx_loop2:
 	 * workaround undo code or resyncing timebase or restoring context
 	 * In either case loop until the lock bit is cleared.
 	 */
-	bne	core_idle_lock_held
+	bnel	core_idle_lock_held
 
 	cmpwi	cr2,r15,0
 	lbz	r4,PACA_SUBCORE_SIBLING_MASK(r13)
@@ -319,15 +339,6 @@ lwarx_loop2:
 	isync
 	b	common_exit
 
-core_idle_lock_held:
-	HMT_LOW
-core_idle_lock_loop:
-	lwz	r15,0(14)
-	andi.   r9,r15,PNV_CORE_IDLE_LOCK_BIT
-	bne	core_idle_lock_loop
-	HMT_MEDIUM
-	b	lwarx_loop2
-
 first_thread_in_subcore:
 	/* First thread in subcore to wakeup */
 	ori	r15,r15,PNV_CORE_IDLE_LOCK_BIT
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/s390/include/asm/ctl_reg.h linux-libre-4.1.5-gnu/arch/s390/include/asm/ctl_reg.h
--- linux-libre-4.1.4-gnu/arch/s390/include/asm/ctl_reg.h	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/s390/include/asm/ctl_reg.h	2015-08-10 15:22:34.000000000 -0400
@@ -57,7 +57,10 @@ union ctlreg0 {
 		unsigned long lap  : 1; /* Low-address-protection control */
 		unsigned long	   : 4;
 		unsigned long edat : 1; /* Enhanced-DAT-enablement control */
-		unsigned long	   : 23;
+		unsigned long	   : 4;
+		unsigned long afp  : 1; /* AFP-register control */
+		unsigned long vx   : 1; /* Vector enablement control */
+		unsigned long	   : 17;
 	};
 };
 
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/s390/kernel/cache.c linux-libre-4.1.5-gnu/arch/s390/kernel/cache.c
--- linux-libre-4.1.4-gnu/arch/s390/kernel/cache.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/s390/kernel/cache.c	2015-08-10 15:22:34.000000000 -0400
@@ -138,6 +138,8 @@ int init_cache_level(unsigned int cpu)
 	union cache_topology ct;
 	enum cache_type ctype;
 
+	if (!test_facility(34))
+		return -EOPNOTSUPP;
 	if (!this_cpu_ci)
 		return -EINVAL;
 	ct.raw = ecag(EXTRACT_TOPOLOGY, 0, 0);
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/s390/kernel/nmi.c linux-libre-4.1.5-gnu/arch/s390/kernel/nmi.c
--- linux-libre-4.1.4-gnu/arch/s390/kernel/nmi.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/s390/kernel/nmi.c	2015-08-10 15:22:34.000000000 -0400
@@ -21,6 +21,7 @@
 #include <asm/nmi.h>
 #include <asm/crw.h>
 #include <asm/switch_to.h>
+#include <asm/ctl_reg.h>
 
 struct mcck_struct {
 	int kill_task;
@@ -129,26 +130,30 @@ static int notrace s390_revalidate_regis
 	} else
 		asm volatile("lfpc 0(%0)" : : "a" (fpt_creg_save_area));
 
-	asm volatile(
-		"	ld	0,0(%0)\n"
-		"	ld	1,8(%0)\n"
-		"	ld	2,16(%0)\n"
-		"	ld	3,24(%0)\n"
-		"	ld	4,32(%0)\n"
-		"	ld	5,40(%0)\n"
-		"	ld	6,48(%0)\n"
-		"	ld	7,56(%0)\n"
-		"	ld	8,64(%0)\n"
-		"	ld	9,72(%0)\n"
-		"	ld	10,80(%0)\n"
-		"	ld	11,88(%0)\n"
-		"	ld	12,96(%0)\n"
-		"	ld	13,104(%0)\n"
-		"	ld	14,112(%0)\n"
-		"	ld	15,120(%0)\n"
-		: : "a" (fpt_save_area));
-	/* Revalidate vector registers */
-	if (MACHINE_HAS_VX && current->thread.vxrs) {
+	if (!MACHINE_HAS_VX) {
+		/* Revalidate floating point registers */
+		asm volatile(
+			"	ld	0,0(%0)\n"
+			"	ld	1,8(%0)\n"
+			"	ld	2,16(%0)\n"
+			"	ld	3,24(%0)\n"
+			"	ld	4,32(%0)\n"
+			"	ld	5,40(%0)\n"
+			"	ld	6,48(%0)\n"
+			"	ld	7,56(%0)\n"
+			"	ld	8,64(%0)\n"
+			"	ld	9,72(%0)\n"
+			"	ld	10,80(%0)\n"
+			"	ld	11,88(%0)\n"
+			"	ld	12,96(%0)\n"
+			"	ld	13,104(%0)\n"
+			"	ld	14,112(%0)\n"
+			"	ld	15,120(%0)\n"
+			: : "a" (fpt_save_area));
+	} else {
+		/* Revalidate vector registers */
+		union ctlreg0 cr0;
+
 		if (!mci->vr) {
 			/*
 			 * Vector registers can't be restored and therefore
@@ -156,8 +161,12 @@ static int notrace s390_revalidate_regis
 			 */
 			kill_task = 1;
 		}
+		cr0.val = S390_lowcore.cregs_save_area[0];
+		cr0.afp = cr0.vx = 1;
+		__ctl_load(cr0.val, 0, 0);
 		restore_vx_regs((__vector128 *)
-				S390_lowcore.vector_save_area_addr);
+				&S390_lowcore.vector_save_area);
+		__ctl_load(S390_lowcore.cregs_save_area[0], 0, 0);
 	}
 	/* Revalidate access registers */
 	asm volatile(
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/s390/kernel/process.c linux-libre-4.1.5-gnu/arch/s390/kernel/process.c
--- linux-libre-4.1.4-gnu/arch/s390/kernel/process.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/s390/kernel/process.c	2015-08-10 15:22:34.000000000 -0400
@@ -163,7 +163,7 @@ int copy_thread(unsigned long clone_flag
 asmlinkage void execve_tail(void)
 {
 	current->thread.fp_regs.fpc = 0;
-	asm volatile("sfpc %0,%0" : : "d" (0));
+	asm volatile("sfpc %0" : : "d" (0));
 }
 
 /*
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/s390/kernel/sclp.S linux-libre-4.1.5-gnu/arch/s390/kernel/sclp.S
--- linux-libre-4.1.4-gnu/arch/s390/kernel/sclp.S	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/s390/kernel/sclp.S	2015-08-10 15:22:34.000000000 -0400
@@ -270,6 +270,8 @@ ENTRY(_sclp_print_early)
 	jno	.Lesa2
 	ahi	%r15,-80
 	stmh	%r6,%r15,96(%r15)		# store upper register halves
+	basr	%r13,0
+	lmh	%r0,%r15,.Lzeroes-.(%r13)	# clear upper register halves
 .Lesa2:
 	lr	%r10,%r2			# save string pointer
 	lhi	%r2,0
@@ -291,6 +293,8 @@ ENTRY(_sclp_print_early)
 .Lesa3:
 	lm	%r6,%r15,120(%r15)		# restore registers
 	br	%r14
+.Lzeroes:
+	.fill	64,4,0
 
 .LwritedataS4:
 	.long	0x00760005			# SCLP command for write data
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/s390/net/bpf_jit_comp.c linux-libre-4.1.5-gnu/arch/s390/net/bpf_jit_comp.c
--- linux-libre-4.1.4-gnu/arch/s390/net/bpf_jit_comp.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/s390/net/bpf_jit_comp.c	2015-08-10 15:22:34.000000000 -0400
@@ -415,13 +415,13 @@ static void bpf_jit_prologue(struct bpf_
 		EMIT6_DISP_LH(0xe3000000, 0x0004, REG_SKB_DATA, REG_0,
 			      BPF_REG_1, offsetof(struct sk_buff, data));
 	}
-	/* BPF compatibility: clear A (%b7) and X (%b8) registers */
-	if (REG_SEEN(BPF_REG_7))
-		/* lghi %b7,0 */
-		EMIT4_IMM(0xa7090000, BPF_REG_7, 0);
-	if (REG_SEEN(BPF_REG_8))
-		/* lghi %b8,0 */
-		EMIT4_IMM(0xa7090000, BPF_REG_8, 0);
+	/* BPF compatibility: clear A (%b0) and X (%b7) registers */
+	if (REG_SEEN(BPF_REG_A))
+		/* lghi %ba,0 */
+		EMIT4_IMM(0xa7090000, BPF_REG_A, 0);
+	if (REG_SEEN(BPF_REG_X))
+		/* lghi %bx,0 */
+		EMIT4_IMM(0xa7090000, BPF_REG_X, 0);
 }
 
 /*
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/tile/kernel/setup.c linux-libre-4.1.5-gnu/arch/tile/kernel/setup.c
--- linux-libre-4.1.4-gnu/arch/tile/kernel/setup.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/tile/kernel/setup.c	2015-08-10 15:22:34.000000000 -0400
@@ -1139,7 +1139,7 @@ static void __init load_hv_initrd(void)
 
 void __init free_initrd_mem(unsigned long begin, unsigned long end)
 {
-	free_bootmem(__pa(begin), end - begin);
+	free_bootmem_late(__pa(begin), end - begin);
 }
 
 static int __init setup_initrd(char *str)
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/x86/boot/compressed/eboot.c linux-libre-4.1.5-gnu/arch/x86/boot/compressed/eboot.c
--- linux-libre-4.1.4-gnu/arch/x86/boot/compressed/eboot.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/x86/boot/compressed/eboot.c	2015-08-10 15:22:34.000000000 -0400
@@ -1193,6 +1193,10 @@ static efi_status_t setup_e820(struct bo
 		unsigned int e820_type = 0;
 		unsigned long m = efi->efi_memmap;
 
+#ifdef CONFIG_X86_64
+		m |= (u64)efi->efi_memmap_hi << 32;
+#endif
+
 		d = (efi_memory_desc_t *)(m + (i * efi->efi_memdesc_size));
 		switch (d->type) {
 		case EFI_RESERVED_TYPE:
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/x86/include/asm/kasan.h linux-libre-4.1.5-gnu/arch/x86/include/asm/kasan.h
--- linux-libre-4.1.4-gnu/arch/x86/include/asm/kasan.h	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/x86/include/asm/kasan.h	2015-08-10 15:22:34.000000000 -0400
@@ -14,15 +14,11 @@
 
 #ifndef __ASSEMBLY__
 
-extern pte_t kasan_zero_pte[];
-extern pte_t kasan_zero_pmd[];
-extern pte_t kasan_zero_pud[];
-
 #ifdef CONFIG_KASAN
-void __init kasan_map_early_shadow(pgd_t *pgd);
+void __init kasan_early_init(void);
 void __init kasan_init(void);
 #else
-static inline void kasan_map_early_shadow(pgd_t *pgd) { }
+static inline void kasan_early_init(void) { }
 static inline void kasan_init(void) { }
 #endif
 
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/x86/include/asm/mmu_context.h linux-libre-4.1.5-gnu/arch/x86/include/asm/mmu_context.h
--- linux-libre-4.1.4-gnu/arch/x86/include/asm/mmu_context.h	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/x86/include/asm/mmu_context.h	2015-08-10 15:22:34.000000000 -0400
@@ -23,7 +23,7 @@ extern struct static_key rdpmc_always_av
 
 static inline void load_mm_cr4(struct mm_struct *mm)
 {
-	if (static_key_true(&rdpmc_always_available) ||
+	if (static_key_false(&rdpmc_always_available) ||
 	    atomic_read(&mm->context.perf_rdpmc_allowed))
 		cr4_set_bits(X86_CR4_PCE);
 	else
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/x86/kernel/cpu/perf_event_intel_cqm.c linux-libre-4.1.5-gnu/arch/x86/kernel/cpu/perf_event_intel_cqm.c
--- linux-libre-4.1.4-gnu/arch/x86/kernel/cpu/perf_event_intel_cqm.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/x86/kernel/cpu/perf_event_intel_cqm.c	2015-08-10 15:22:34.000000000 -0400
@@ -934,6 +934,14 @@ static u64 intel_cqm_event_count(struct
 		return 0;
 
 	/*
+	 * Getting up-to-date values requires an SMP IPI which is not
+	 * possible if we're being called in interrupt context. Return
+	 * the cached values instead.
+	 */
+	if (unlikely(in_interrupt()))
+		goto out;
+
+	/*
 	 * Notice that we don't perform the reading of an RMID
 	 * atomically, because we can't hold a spin lock across the
 	 * IPIs.
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/x86/kernel/head64.c linux-libre-4.1.5-gnu/arch/x86/kernel/head64.c
--- linux-libre-4.1.4-gnu/arch/x86/kernel/head64.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/x86/kernel/head64.c	2015-08-10 15:22:34.000000000 -0400
@@ -161,11 +161,12 @@ asmlinkage __visible void __init x86_64_
 	/* Kill off the identity-map trampoline */
 	reset_early_page_tables();
 
-	kasan_map_early_shadow(early_level4_pgt);
-
-	/* clear bss before set_intr_gate with early_idt_handler */
 	clear_bss();
 
+	clear_page(init_level4_pgt);
+
+	kasan_early_init();
+
 	for (i = 0; i < NUM_EXCEPTION_VECTORS; i++)
 		set_intr_gate(i, early_idt_handler_array[i]);
 	load_idt((const struct desc_ptr *)&idt_descr);
@@ -177,12 +178,9 @@ asmlinkage __visible void __init x86_64_
 	 */
 	load_ucode_bsp();
 
-	clear_page(init_level4_pgt);
 	/* set init_level4_pgt kernel high mapping*/
 	init_level4_pgt[511] = early_level4_pgt[511];
 
-	kasan_map_early_shadow(init_level4_pgt);
-
 	x86_64_start_reservations(real_mode_data);
 }
 
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/x86/kernel/head_64.S linux-libre-4.1.5-gnu/arch/x86/kernel/head_64.S
--- linux-libre-4.1.4-gnu/arch/x86/kernel/head_64.S	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/x86/kernel/head_64.S	2015-08-10 15:22:34.000000000 -0400
@@ -516,38 +516,9 @@ ENTRY(phys_base)
 	/* This must match the first entry in level2_kernel_pgt */
 	.quad   0x0000000000000000
 
-#ifdef CONFIG_KASAN
-#define FILL(VAL, COUNT)				\
-	.rept (COUNT) ;					\
-	.quad	(VAL) ;					\
-	.endr
-
-NEXT_PAGE(kasan_zero_pte)
-	FILL(kasan_zero_page - __START_KERNEL_map + _KERNPG_TABLE, 512)
-NEXT_PAGE(kasan_zero_pmd)
-	FILL(kasan_zero_pte - __START_KERNEL_map + _KERNPG_TABLE, 512)
-NEXT_PAGE(kasan_zero_pud)
-	FILL(kasan_zero_pmd - __START_KERNEL_map + _KERNPG_TABLE, 512)
-
-#undef FILL
-#endif
-
-
 #include "../../x86/xen/xen-head.S"
 	
 	__PAGE_ALIGNED_BSS
 NEXT_PAGE(empty_zero_page)
 	.skip PAGE_SIZE
 
-#ifdef CONFIG_KASAN
-/*
- * This page used as early shadow. We don't use empty_zero_page
- * at early stages, stack instrumentation could write some garbage
- * to this page.
- * Latter we reuse it as zero shadow for large ranges of memory
- * that allowed to access, but not instrumented by kasan
- * (vmalloc/vmemmap ...).
- */
-NEXT_PAGE(kasan_zero_page)
-	.skip PAGE_SIZE
-#endif
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/x86/mm/kasan_init_64.c linux-libre-4.1.5-gnu/arch/x86/mm/kasan_init_64.c
--- linux-libre-4.1.4-gnu/arch/x86/mm/kasan_init_64.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/x86/mm/kasan_init_64.c	2015-08-10 15:22:34.000000000 -0400
@@ -11,7 +11,19 @@
 extern pgd_t early_level4_pgt[PTRS_PER_PGD];
 extern struct range pfn_mapped[E820_X_MAX];
 
-extern unsigned char kasan_zero_page[PAGE_SIZE];
+static pud_t kasan_zero_pud[PTRS_PER_PUD] __page_aligned_bss;
+static pmd_t kasan_zero_pmd[PTRS_PER_PMD] __page_aligned_bss;
+static pte_t kasan_zero_pte[PTRS_PER_PTE] __page_aligned_bss;
+
+/*
+ * This page used as early shadow. We don't use empty_zero_page
+ * at early stages, stack instrumentation could write some garbage
+ * to this page.
+ * Latter we reuse it as zero shadow for large ranges of memory
+ * that allowed to access, but not instrumented by kasan
+ * (vmalloc/vmemmap ...).
+ */
+static unsigned char kasan_zero_page[PAGE_SIZE] __page_aligned_bss;
 
 static int __init map_range(struct range *range)
 {
@@ -36,7 +48,7 @@ static void __init clear_pgds(unsigned l
 		pgd_clear(pgd_offset_k(start));
 }
 
-void __init kasan_map_early_shadow(pgd_t *pgd)
+static void __init kasan_map_early_shadow(pgd_t *pgd)
 {
 	int i;
 	unsigned long start = KASAN_SHADOW_START;
@@ -73,7 +85,7 @@ static int __init zero_pmd_populate(pud_
 	while (IS_ALIGNED(addr, PMD_SIZE) && addr + PMD_SIZE <= end) {
 		WARN_ON(!pmd_none(*pmd));
 		set_pmd(pmd, __pmd(__pa_nodebug(kasan_zero_pte)
-					| __PAGE_KERNEL_RO));
+					| _KERNPG_TABLE));
 		addr += PMD_SIZE;
 		pmd = pmd_offset(pud, addr);
 	}
@@ -99,7 +111,7 @@ static int __init zero_pud_populate(pgd_
 	while (IS_ALIGNED(addr, PUD_SIZE) && addr + PUD_SIZE <= end) {
 		WARN_ON(!pud_none(*pud));
 		set_pud(pud, __pud(__pa_nodebug(kasan_zero_pmd)
-					| __PAGE_KERNEL_RO));
+					| _KERNPG_TABLE));
 		addr += PUD_SIZE;
 		pud = pud_offset(pgd, addr);
 	}
@@ -124,7 +136,7 @@ static int __init zero_pgd_populate(unsi
 	while (IS_ALIGNED(addr, PGDIR_SIZE) && addr + PGDIR_SIZE <= end) {
 		WARN_ON(!pgd_none(*pgd));
 		set_pgd(pgd, __pgd(__pa_nodebug(kasan_zero_pud)
-					| __PAGE_KERNEL_RO));
+					| _KERNPG_TABLE));
 		addr += PGDIR_SIZE;
 		pgd = pgd_offset_k(addr);
 	}
@@ -166,6 +178,26 @@ static struct notifier_block kasan_die_n
 };
 #endif
 
+void __init kasan_early_init(void)
+{
+	int i;
+	pteval_t pte_val = __pa_nodebug(kasan_zero_page) | __PAGE_KERNEL;
+	pmdval_t pmd_val = __pa_nodebug(kasan_zero_pte) | _KERNPG_TABLE;
+	pudval_t pud_val = __pa_nodebug(kasan_zero_pmd) | _KERNPG_TABLE;
+
+	for (i = 0; i < PTRS_PER_PTE; i++)
+		kasan_zero_pte[i] = __pte(pte_val);
+
+	for (i = 0; i < PTRS_PER_PMD; i++)
+		kasan_zero_pmd[i] = __pmd(pmd_val);
+
+	for (i = 0; i < PTRS_PER_PUD; i++)
+		kasan_zero_pud[i] = __pud(pud_val);
+
+	kasan_map_early_shadow(early_level4_pgt);
+	kasan_map_early_shadow(init_level4_pgt);
+}
+
 void __init kasan_init(void)
 {
 	int i;
@@ -176,6 +208,7 @@ void __init kasan_init(void)
 
 	memcpy(early_level4_pgt, init_level4_pgt, sizeof(early_level4_pgt));
 	load_cr3(early_level4_pgt);
+	__flush_tlb_all();
 
 	clear_pgds(KASAN_SHADOW_START, KASAN_SHADOW_END);
 
@@ -202,5 +235,6 @@ void __init kasan_init(void)
 	memset(kasan_zero_page, 0, PAGE_SIZE);
 
 	load_cr3(init_level4_pgt);
+	__flush_tlb_all();
 	init_task.kasan_depth = 0;
 }
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/x86/mm/tlb.c linux-libre-4.1.5-gnu/arch/x86/mm/tlb.c
--- linux-libre-4.1.4-gnu/arch/x86/mm/tlb.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/x86/mm/tlb.c	2015-08-10 15:22:34.000000000 -0400
@@ -117,7 +117,7 @@ static void flush_tlb_func(void *info)
 		} else {
 			unsigned long addr;
 			unsigned long nr_pages =
-				f->flush_end - f->flush_start / PAGE_SIZE;
+				(f->flush_end - f->flush_start) / PAGE_SIZE;
 			addr = f->flush_start;
 			while (addr < f->flush_end) {
 				__flush_tlb_single(addr);
diff -druNp --no-dereference linux-libre-4.1.4-gnu/arch/x86/platform/efi/efi.c linux-libre-4.1.5-gnu/arch/x86/platform/efi/efi.c
--- linux-libre-4.1.4-gnu/arch/x86/platform/efi/efi.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/arch/x86/platform/efi/efi.c	2015-08-10 15:22:34.000000000 -0400
@@ -946,6 +946,11 @@ u64 efi_mem_attributes(unsigned long phy
 
 static int __init arch_parse_efi_cmdline(char *str)
 {
+	if (!str) {
+		pr_warn("need at least one option\n");
+		return -EINVAL;
+	}
+
 	if (parse_option_str(str, "old_map"))
 		set_bit(EFI_OLD_MEMMAP, &efi.flags);
 	if (parse_option_str(str, "debug"))
diff -druNp --no-dereference linux-libre-4.1.4-gnu/block/bio-integrity.c linux-libre-4.1.5-gnu/block/bio-integrity.c
--- linux-libre-4.1.4-gnu/block/bio-integrity.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/block/bio-integrity.c	2015-08-10 15:22:34.000000000 -0400
@@ -51,7 +51,7 @@ struct bio_integrity_payload *bio_integr
 	unsigned long idx = BIO_POOL_NONE;
 	unsigned inline_vecs;
 
-	if (!bs) {
+	if (!bs || !bs->bio_integrity_pool) {
 		bip = kmalloc(sizeof(struct bio_integrity_payload) +
 			      sizeof(struct bio_vec) * nr_vecs, gfp_mask);
 		inline_vecs = nr_vecs;
@@ -104,7 +104,7 @@ void bio_integrity_free(struct bio *bio)
 		kfree(page_address(bip->bip_vec->bv_page) +
 		      bip->bip_vec->bv_offset);
 
-	if (bs) {
+	if (bs && bs->bio_integrity_pool) {
 		if (bip->bip_slab != BIO_POOL_NONE)
 			bvec_free(bs->bvec_integrity_pool, bip->bip_vec,
 				  bip->bip_slab);
diff -druNp --no-dereference linux-libre-4.1.4-gnu/block/blk-cgroup.c linux-libre-4.1.5-gnu/block/blk-cgroup.c
--- linux-libre-4.1.4-gnu/block/blk-cgroup.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/block/blk-cgroup.c	2015-08-10 15:22:34.000000000 -0400
@@ -716,8 +716,12 @@ int blkg_conf_prep(struct blkcg *blkcg,
 		return -EINVAL;
 
 	disk = get_gendisk(MKDEV(major, minor), &part);
-	if (!disk || part)
+	if (!disk)
+		return -EINVAL;
+	if (part) {
+		put_disk(disk);
 		return -EINVAL;
+	}
 
 	rcu_read_lock();
 	spin_lock_irq(disk->queue->queue_lock);
diff -druNp --no-dereference linux-libre-4.1.4-gnu/block/blk-mq.c linux-libre-4.1.5-gnu/block/blk-mq.c
--- linux-libre-4.1.4-gnu/block/blk-mq.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/block/blk-mq.c	2015-08-10 15:22:34.000000000 -0400
@@ -1968,7 +1968,7 @@ struct request_queue *blk_mq_init_alloca
 		goto err_hctxs;
 
 	setup_timer(&q->timeout, blk_mq_rq_timer, (unsigned long) q);
-	blk_queue_rq_timeout(q, set->timeout ? set->timeout : 30000);
+	blk_queue_rq_timeout(q, set->timeout ? set->timeout : 30 * HZ);
 
 	q->nr_queues = nr_cpu_ids;
 	q->nr_hw_queues = set->nr_hw_queues;
diff -druNp --no-dereference linux-libre-4.1.4-gnu/Documentation/hwmon/nct7904 linux-libre-4.1.5-gnu/Documentation/hwmon/nct7904
--- linux-libre-4.1.4-gnu/Documentation/hwmon/nct7904	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/Documentation/hwmon/nct7904	2015-08-10 15:22:34.000000000 -0400
@@ -35,11 +35,11 @@ temp1_input		Local temperature (1/1000 d
 temp[2-9]_input		CPU temperatures (1/1000 degree,
 			0.125 degree resolution)
 
-fan[1-4]_mode		R/W, 0/1 for manual or SmartFan mode
+pwm[1-4]_enable		R/W, 1/2 for manual or SmartFan mode
 			Setting SmartFan mode is supported only if it has been
 			previously configured by BIOS (or configuration EEPROM)
 
-fan[1-4]_pwm		R/O in SmartFan mode, R/W in manual control mode
+pwm[1-4]		R/O in SmartFan mode, R/W in manual control mode
 
 The driver checks sensor control registers and does not export the sensors
 that are not enabled. Anyway, a sensor that is enabled may actually be not
diff -druNp --no-dereference linux-libre-4.1.4-gnu/Documentation/kbuild/makefiles.txt linux-libre-4.1.5-gnu/Documentation/kbuild/makefiles.txt
--- linux-libre-4.1.4-gnu/Documentation/kbuild/makefiles.txt	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/Documentation/kbuild/makefiles.txt	2015-08-10 15:22:34.000000000 -0400
@@ -952,6 +952,14 @@ When kbuild executes, the following step
 	$(KBUILD_ARFLAGS) set by the top level Makefile to "D" (deterministic
 	mode) if this option is supported by $(AR).
 
+    ARCH_CPPFLAGS, ARCH_AFLAGS, ARCH_CFLAGS   Overrides the kbuild defaults
+
+	These variables are appended to the KBUILD_CPPFLAGS,
+	KBUILD_AFLAGS, and KBUILD_CFLAGS, respectively, after the
+	top-level Makefile has set any other flags. This provides a
+	means for an architecture to override the defaults.
+
+
 --- 6.2 Add prerequisites to archheaders:
 
 	The archheaders: rule is used to generate header files that
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/ata/libata-pmp.c linux-libre-4.1.5-gnu/drivers/ata/libata-pmp.c
--- linux-libre-4.1.4-gnu/drivers/ata/libata-pmp.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/ata/libata-pmp.c	2015-08-10 15:22:34.000000000 -0400
@@ -460,6 +460,13 @@ static void sata_pmp_quirks(struct ata_p
 				       ATA_LFLAG_NO_SRST |
 				       ATA_LFLAG_ASSUME_ATA;
 		}
+	} else if (vendor == 0x11ab && devid == 0x4140) {
+		/* Marvell 4140 quirks */
+		ata_for_each_link(link, ap, EDGE) {
+			/* port 4 is for SEMB device and it doesn't like SRST */
+			if (link->pmp == 4)
+				link->flags |= ATA_LFLAG_DISABLED;
+		}
 	}
 }
 
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/clk/st/clk-flexgen.c linux-libre-4.1.5-gnu/drivers/clk/st/clk-flexgen.c
--- linux-libre-4.1.4-gnu/drivers/clk/st/clk-flexgen.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/clk/st/clk-flexgen.c	2015-08-10 15:22:34.000000000 -0400
@@ -303,6 +303,8 @@ void __init st_of_flexgen_setup(struct d
 	if (!rlock)
 		goto err;
 
+	spin_lock_init(rlock);
+
 	for (i = 0; i < clk_data->clk_num; i++) {
 		struct clk *clk;
 		const char *clk_name;
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/clk/st/clkgen-fsyn.c linux-libre-4.1.5-gnu/drivers/clk/st/clkgen-fsyn.c
--- linux-libre-4.1.4-gnu/drivers/clk/st/clkgen-fsyn.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/clk/st/clkgen-fsyn.c	2015-08-10 15:22:34.000000000 -0400
@@ -340,7 +340,7 @@ static const struct clkgen_quadfs_data s
 		    CLKGEN_FIELD(0x30c, 0xf, 20),
 		    CLKGEN_FIELD(0x310, 0xf, 20) },
 	.lockstatus_present = true,
-	.lock_status = CLKGEN_FIELD(0x2A0, 0x1, 24),
+	.lock_status = CLKGEN_FIELD(0x2f0, 0x1, 24),
 	.powerup_polarity = 1,
 	.standby_polarity = 1,
 	.pll_ops	= &st_quadfs_pll_c32_ops,
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/clk/st/clkgen-mux.c linux-libre-4.1.5-gnu/drivers/clk/st/clkgen-mux.c
--- linux-libre-4.1.4-gnu/drivers/clk/st/clkgen-mux.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/clk/st/clkgen-mux.c	2015-08-10 15:22:34.000000000 -0400
@@ -582,7 +582,7 @@ static struct clkgen_mux_data stih416_a9
 };
 static struct clkgen_mux_data stih407_a9_mux_data = {
 	.offset = 0x1a4,
-	.shift = 1,
+	.shift = 0,
 	.width = 2,
 };
 
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/cpufreq/intel_pstate.c linux-libre-4.1.5-gnu/drivers/cpufreq/intel_pstate.c
--- linux-libre-4.1.4-gnu/drivers/cpufreq/intel_pstate.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/cpufreq/intel_pstate.c	2015-08-10 15:22:34.000000000 -0400
@@ -678,6 +678,7 @@ static struct cpu_defaults knl_params =
 		.get_max = core_get_max_pstate,
 		.get_min = core_get_min_pstate,
 		.get_turbo = knl_get_turbo_pstate,
+		.get_scaling = core_get_scaling,
 		.set = core_set_pstate,
 	},
 };
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/crypto/omap-des.c linux-libre-4.1.5-gnu/drivers/crypto/omap-des.c
--- linux-libre-4.1.4-gnu/drivers/crypto/omap-des.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/crypto/omap-des.c	2015-08-10 15:22:34.000000000 -0400
@@ -536,9 +536,6 @@ static int omap_des_crypt_dma_stop(struc
 	dmaengine_terminate_all(dd->dma_lch_in);
 	dmaengine_terminate_all(dd->dma_lch_out);
 
-	dma_unmap_sg(dd->dev, dd->in_sg, dd->in_sg_len, DMA_TO_DEVICE);
-	dma_unmap_sg(dd->dev, dd->out_sg, dd->out_sg_len, DMA_FROM_DEVICE);
-
 	return err;
 }
 
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/firmware/efi/cper.c linux-libre-4.1.5-gnu/drivers/firmware/efi/cper.c
--- linux-libre-4.1.4-gnu/drivers/firmware/efi/cper.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/firmware/efi/cper.c	2015-08-10 15:22:34.000000000 -0400
@@ -305,10 +305,17 @@ const char *cper_mem_err_unpack(struct t
 	return ret;
 }
 
-static void cper_print_mem(const char *pfx, const struct cper_sec_mem_err *mem)
+static void cper_print_mem(const char *pfx, const struct cper_sec_mem_err *mem,
+	int len)
 {
 	struct cper_mem_err_compact cmem;
 
+	/* Don't trust UEFI 2.1/2.2 structure with bad validation bits */
+	if (len == sizeof(struct cper_sec_mem_err_old) &&
+	    (mem->validation_bits & ~(CPER_MEM_VALID_RANK_NUMBER - 1))) {
+		pr_err(FW_WARN "valid bits set for fields beyond structure\n");
+		return;
+	}
 	if (mem->validation_bits & CPER_MEM_VALID_ERROR_STATUS)
 		printk("%s""error_status: 0x%016llx\n", pfx, mem->error_status);
 	if (mem->validation_bits & CPER_MEM_VALID_PA)
@@ -405,8 +412,10 @@ static void cper_estatus_print_section(
 	} else if (!uuid_le_cmp(*sec_type, CPER_SEC_PLATFORM_MEM)) {
 		struct cper_sec_mem_err *mem_err = (void *)(gdata + 1);
 		printk("%s""section_type: memory error\n", newpfx);
-		if (gdata->error_data_length >= sizeof(*mem_err))
-			cper_print_mem(newpfx, mem_err);
+		if (gdata->error_data_length >=
+		    sizeof(struct cper_sec_mem_err_old))
+			cper_print_mem(newpfx, mem_err,
+				       gdata->error_data_length);
 		else
 			goto err_section_too_small;
 	} else if (!uuid_le_cmp(*sec_type, CPER_SEC_PCIE)) {
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/firmware/efi/efi.c linux-libre-4.1.5-gnu/drivers/firmware/efi/efi.c
--- linux-libre-4.1.4-gnu/drivers/firmware/efi/efi.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/firmware/efi/efi.c	2015-08-10 15:22:34.000000000 -0400
@@ -57,6 +57,11 @@ bool efi_runtime_disabled(void)
 
 static int __init parse_efi_cmdline(char *str)
 {
+	if (!str) {
+		pr_warn("need at least one option\n");
+		return -EINVAL;
+	}
+
 	if (parse_option_str(str, "noruntime"))
 		disable_runtime = true;
 
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/gpu/drm/nouveau/nouveau_drm.c linux-libre-4.1.5-gnu/drivers/gpu/drm/nouveau/nouveau_drm.c
--- linux-libre-4.1.4-gnu/drivers/gpu/drm/nouveau/nouveau_drm.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/gpu/drm/nouveau/nouveau_drm.c	2015-08-10 15:22:34.000000000 -0400
@@ -863,8 +863,10 @@ nouveau_drm_preclose(struct drm_device *
 
 	pm_runtime_get_sync(dev->dev);
 
+	mutex_lock(&cli->mutex);
 	if (cli->abi16)
 		nouveau_abi16_fini(cli->abi16);
+	mutex_unlock(&cli->mutex);
 
 	mutex_lock(&drm->client.mutex);
 	list_del(&cli->head);
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/gpu/drm/nouveau/nv04_fbcon.c linux-libre-4.1.5-gnu/drivers/gpu/drm/nouveau/nv04_fbcon.c
--- linux-libre-4.1.4-gnu/drivers/gpu/drm/nouveau/nv04_fbcon.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/gpu/drm/nouveau/nv04_fbcon.c	2015-08-10 15:22:34.000000000 -0400
@@ -203,7 +203,7 @@ nv04_fbcon_accel_init(struct fb_info *in
 	if (ret)
 		return ret;
 
-	if (RING_SPACE(chan, 49)) {
+	if (RING_SPACE(chan, 49 + (device->info.chipset >= 0x11 ? 4 : 0))) {
 		nouveau_fbcon_gpu_lockup(info);
 		return 0;
 	}
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/gpu/drm/nouveau/nv50_display.c linux-libre-4.1.5-gnu/drivers/gpu/drm/nouveau/nv50_display.c
--- linux-libre-4.1.4-gnu/drivers/gpu/drm/nouveau/nv50_display.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/gpu/drm/nouveau/nv50_display.c	2015-08-10 15:22:34.000000000 -0400
@@ -979,7 +979,7 @@ nv50_crtc_cursor_show_hide(struct nouvea
 {
 	struct nv50_mast *mast = nv50_mast(nv_crtc->base.dev);
 
-	if (show && nv_crtc->cursor.nvbo)
+	if (show && nv_crtc->cursor.nvbo && nv_crtc->base.enabled)
 		nv50_crtc_cursor_show(nv_crtc);
 	else
 		nv50_crtc_cursor_hide(nv_crtc);
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv04.c linux-libre-4.1.5-gnu/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv04.c
--- linux-libre-4.1.4-gnu/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv04.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv04.c	2015-08-10 15:22:34.000000000 -0400
@@ -50,7 +50,12 @@ nv04_instobj_dtor(struct nvkm_object *ob
 {
 	struct nv04_instmem_priv *priv = (void *)nvkm_instmem(object);
 	struct nv04_instobj_priv *node = (void *)object;
+	struct nvkm_subdev *subdev = (void *)priv;
+
+	mutex_lock(&subdev->mutex);
 	nvkm_mm_free(&priv->heap, &node->mem);
+	mutex_unlock(&subdev->mutex);
+
 	nvkm_instobj_destroy(&node->base);
 }
 
@@ -62,6 +67,7 @@ nv04_instobj_ctor(struct nvkm_object *pa
 	struct nv04_instmem_priv *priv = (void *)nvkm_instmem(parent);
 	struct nv04_instobj_priv *node;
 	struct nvkm_instobj_args *args = data;
+	struct nvkm_subdev *subdev = (void *)priv;
 	int ret;
 
 	if (!args->align)
@@ -72,8 +78,10 @@ nv04_instobj_ctor(struct nvkm_object *pa
 	if (ret)
 		return ret;
 
+	mutex_lock(&subdev->mutex);
 	ret = nvkm_mm_head(&priv->heap, 0, 1, args->size, args->size,
 			   args->align, &node->mem);
+	mutex_unlock(&subdev->mutex);
 	if (ret)
 		return ret;
 
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/hid/hid-cp2112.c linux-libre-4.1.5-gnu/drivers/hid/hid-cp2112.c
--- linux-libre-4.1.4-gnu/drivers/hid/hid-cp2112.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/hid/hid-cp2112.c	2015-08-10 15:22:34.000000000 -0400
@@ -356,6 +356,8 @@ static int cp2112_read(struct cp2112_dev
 	struct cp2112_force_read_report report;
 	int ret;
 
+	if (size > sizeof(dev->read_data))
+		size = sizeof(dev->read_data);
 	report.report = CP2112_DATA_READ_FORCE_SEND;
 	report.length = cpu_to_be16(size);
 
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/hwmon/nct7802.c linux-libre-4.1.5-gnu/drivers/hwmon/nct7802.c
--- linux-libre-4.1.4-gnu/drivers/hwmon/nct7802.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/hwmon/nct7802.c	2015-08-10 15:22:34.000000000 -0400
@@ -195,7 +195,7 @@ abort:
 }
 
 static int nct7802_write_voltage(struct nct7802_data *data, int nr, int index,
-				 unsigned int voltage)
+				 unsigned long voltage)
 {
 	int shift = 8 - REG_VOLTAGE_LIMIT_MSB_SHIFT[index - 1][nr];
 	int err;
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/hwmon/nct7904.c linux-libre-4.1.5-gnu/drivers/hwmon/nct7904.c
--- linux-libre-4.1.4-gnu/drivers/hwmon/nct7904.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/hwmon/nct7904.c	2015-08-10 15:22:34.000000000 -0400
@@ -412,8 +412,9 @@ static ssize_t show_pwm(struct device *d
 	return sprintf(buf, "%d\n", val);
 }
 
-static ssize_t store_mode(struct device *dev, struct device_attribute *devattr,
-			  const char *buf, size_t count)
+static ssize_t store_enable(struct device *dev,
+			    struct device_attribute *devattr,
+			    const char *buf, size_t count)
 {
 	int index = to_sensor_dev_attr(devattr)->index;
 	struct nct7904_data *data = dev_get_drvdata(dev);
@@ -422,18 +423,18 @@ static ssize_t store_mode(struct device
 
 	if (kstrtoul(buf, 10, &val) < 0)
 		return -EINVAL;
-	if (val > 1 || (val && !data->fan_mode[index]))
+	if (val < 1 || val > 2 || (val == 2 && !data->fan_mode[index]))
 		return -EINVAL;
 
 	ret = nct7904_write_reg(data, BANK_3, FANCTL1_FMR_REG + index,
-				val ? data->fan_mode[index] : 0);
+				val == 2 ? data->fan_mode[index] : 0);
 
 	return ret ? ret : count;
 }
 
-/* Return 0 for manual mode or 1 for SmartFan mode */
-static ssize_t show_mode(struct device *dev,
-			 struct device_attribute *devattr, char *buf)
+/* Return 1 for manual mode or 2 for SmartFan mode */
+static ssize_t show_enable(struct device *dev,
+			   struct device_attribute *devattr, char *buf)
 {
 	int index = to_sensor_dev_attr(devattr)->index;
 	struct nct7904_data *data = dev_get_drvdata(dev);
@@ -443,36 +444,36 @@ static ssize_t show_mode(struct device *
 	if (val < 0)
 		return val;
 
-	return sprintf(buf, "%d\n", val ? 1 : 0);
+	return sprintf(buf, "%d\n", val ? 2 : 1);
 }
 
 /* 2 attributes per channel: pwm and mode */
-static SENSOR_DEVICE_ATTR(fan1_pwm, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR,
 			show_pwm, store_pwm, 0);
-static SENSOR_DEVICE_ATTR(fan1_mode, S_IRUGO | S_IWUSR,
-			show_mode, store_mode, 0);
-static SENSOR_DEVICE_ATTR(fan2_pwm, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
+			show_enable, store_enable, 0);
+static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR,
 			show_pwm, store_pwm, 1);
-static SENSOR_DEVICE_ATTR(fan2_mode, S_IRUGO | S_IWUSR,
-			show_mode, store_mode, 1);
-static SENSOR_DEVICE_ATTR(fan3_pwm, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR,
+			show_enable, store_enable, 1);
+static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR,
 			show_pwm, store_pwm, 2);
-static SENSOR_DEVICE_ATTR(fan3_mode, S_IRUGO | S_IWUSR,
-			show_mode, store_mode, 2);
-static SENSOR_DEVICE_ATTR(fan4_pwm, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR,
+			show_enable, store_enable, 2);
+static SENSOR_DEVICE_ATTR(pwm4, S_IRUGO | S_IWUSR,
 			show_pwm, store_pwm, 3);
-static SENSOR_DEVICE_ATTR(fan4_mode, S_IRUGO | S_IWUSR,
-			show_mode, store_mode, 3);
+static SENSOR_DEVICE_ATTR(pwm4_enable, S_IRUGO | S_IWUSR,
+			show_enable, store_enable, 3);
 
 static struct attribute *nct7904_fanctl_attrs[] = {
-	&sensor_dev_attr_fan1_pwm.dev_attr.attr,
-	&sensor_dev_attr_fan1_mode.dev_attr.attr,
-	&sensor_dev_attr_fan2_pwm.dev_attr.attr,
-	&sensor_dev_attr_fan2_mode.dev_attr.attr,
-	&sensor_dev_attr_fan3_pwm.dev_attr.attr,
-	&sensor_dev_attr_fan3_mode.dev_attr.attr,
-	&sensor_dev_attr_fan4_pwm.dev_attr.attr,
-	&sensor_dev_attr_fan4_mode.dev_attr.attr,
+	&sensor_dev_attr_pwm1.dev_attr.attr,
+	&sensor_dev_attr_pwm1_enable.dev_attr.attr,
+	&sensor_dev_attr_pwm2.dev_attr.attr,
+	&sensor_dev_attr_pwm2_enable.dev_attr.attr,
+	&sensor_dev_attr_pwm3.dev_attr.attr,
+	&sensor_dev_attr_pwm3_enable.dev_attr.attr,
+	&sensor_dev_attr_pwm4.dev_attr.attr,
+	&sensor_dev_attr_pwm4_enable.dev_attr.attr,
 	NULL
 };
 
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/infiniband/ulp/ipoib/ipoib_verbs.c linux-libre-4.1.5-gnu/drivers/infiniband/ulp/ipoib/ipoib_verbs.c
--- linux-libre-4.1.4-gnu/drivers/infiniband/ulp/ipoib/ipoib_verbs.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/infiniband/ulp/ipoib/ipoib_verbs.c	2015-08-10 15:22:34.000000000 -0400
@@ -176,7 +176,8 @@ int ipoib_transport_dev_init(struct net_
 		else
 			size += ipoib_recvq_size * ipoib_max_conn_qp;
 	} else
-		goto out_free_wq;
+		if (ret != -ENOSYS)
+			goto out_free_wq;
 
 	priv->recv_cq = ib_create_cq(priv->ca, ipoib_ib_completion, NULL, dev, size, 0);
 	if (IS_ERR(priv->recv_cq)) {
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/input/mouse/synaptics.c linux-libre-4.1.5-gnu/drivers/input/mouse/synaptics.c
--- linux-libre-4.1.4-gnu/drivers/input/mouse/synaptics.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/input/mouse/synaptics.c	2015-08-10 15:22:34.000000000 -0400
@@ -1199,7 +1199,7 @@ static void set_input_params(struct psmo
 					ABS_MT_POSITION_Y);
 		/* Image sensors can report per-contact pressure */
 		input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
-		input_mt_init_slots(dev, 3, INPUT_MT_POINTER | INPUT_MT_TRACK);
+		input_mt_init_slots(dev, 2, INPUT_MT_POINTER | INPUT_MT_TRACK);
 
 		/* Image sensors can signal 4 and 5 finger clicks */
 		__set_bit(BTN_TOOL_QUADTAP, dev->keybit);
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/input/touchscreen/usbtouchscreen.c linux-libre-4.1.5-gnu/drivers/input/touchscreen/usbtouchscreen.c
--- linux-libre-4.1.4-gnu/drivers/input/touchscreen/usbtouchscreen.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/input/touchscreen/usbtouchscreen.c	2015-08-10 15:22:34.000000000 -0400
@@ -627,6 +627,9 @@ static int dmc_tsc10_init(struct usbtouc
 		goto err_out;
 	}
 
+	/* TSC-25 data sheet specifies a delay after the RESET command */
+	msleep(150);
+
 	/* set coordinate output rate */
 	buf[0] = buf[1] = 0xFF;
 	ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/iommu/intel-iommu.c linux-libre-4.1.5-gnu/drivers/iommu/intel-iommu.c
--- linux-libre-4.1.4-gnu/drivers/iommu/intel-iommu.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/iommu/intel-iommu.c	2015-08-10 15:22:34.000000000 -0400
@@ -1756,8 +1756,9 @@ static int domain_init(struct dmar_domai
 
 static void domain_exit(struct dmar_domain *domain)
 {
+	struct dmar_drhd_unit *drhd;
+	struct intel_iommu *iommu;
 	struct page *freelist = NULL;
-	int i;
 
 	/* Domain 0 is reserved, so dont process it */
 	if (!domain)
@@ -1777,8 +1778,10 @@ static void domain_exit(struct dmar_doma
 
 	/* clear attached or cached domains */
 	rcu_read_lock();
-	for_each_set_bit(i, domain->iommu_bmp, g_num_of_iommus)
-		iommu_detach_domain(domain, g_iommus[i]);
+	for_each_active_iommu(iommu, drhd)
+		if (domain_type_is_vm(domain) ||
+		    test_bit(iommu->seq_id, domain->iommu_bmp))
+			iommu_detach_domain(domain, iommu);
 	rcu_read_unlock();
 
 	dma_free_pagelist(freelist);
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/irqchip/irq-gic-v3-its.c linux-libre-4.1.5-gnu/drivers/irqchip/irq-gic-v3-its.c
--- linux-libre-4.1.4-gnu/drivers/irqchip/irq-gic-v3-its.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/irqchip/irq-gic-v3-its.c	2015-08-10 15:22:34.000000000 -0400
@@ -75,6 +75,13 @@ struct its_node {
 
 #define ITS_ITT_ALIGN		SZ_256
 
+struct event_lpi_map {
+	unsigned long		*lpi_map;
+	u16			*col_map;
+	irq_hw_number_t		lpi_base;
+	int			nr_lpis;
+};
+
 /*
  * The ITS view of a device - belongs to an ITS, a collection, owns an
  * interrupt translation table, and a list of interrupts.
@@ -82,11 +89,8 @@ struct its_node {
 struct its_device {
 	struct list_head	entry;
 	struct its_node		*its;
-	struct its_collection	*collection;
+	struct event_lpi_map	event_map;
 	void			*itt;
-	unsigned long		*lpi_map;
-	irq_hw_number_t		lpi_base;
-	int			nr_lpis;
 	u32			nr_ites;
 	u32			device_id;
 };
@@ -99,6 +103,14 @@ static struct rdists *gic_rdists;
 #define gic_data_rdist()		(raw_cpu_ptr(gic_rdists->rdist))
 #define gic_data_rdist_rd_base()	(gic_data_rdist()->rd_base)
 
+static struct its_collection *dev_event_to_col(struct its_device *its_dev,
+					       u32 event)
+{
+	struct its_node *its = its_dev->its;
+
+	return its->collections + its_dev->event_map.col_map[event];
+}
+
 /*
  * ITS command descriptors - parameters to be encoded in a command
  * block.
@@ -134,7 +146,7 @@ struct its_cmd_desc {
 		struct {
 			struct its_device *dev;
 			struct its_collection *col;
-			u32 id;
+			u32 event_id;
 		} its_movi_cmd;
 
 		struct {
@@ -241,7 +253,7 @@ static struct its_collection *its_build_
 
 	its_fixup_cmd(cmd);
 
-	return desc->its_mapd_cmd.dev->collection;
+	return NULL;
 }
 
 static struct its_collection *its_build_mapc_cmd(struct its_cmd_block *cmd,
@@ -260,52 +272,72 @@ static struct its_collection *its_build_
 static struct its_collection *its_build_mapvi_cmd(struct its_cmd_block *cmd,
 						  struct its_cmd_desc *desc)
 {
+	struct its_collection *col;
+
+	col = dev_event_to_col(desc->its_mapvi_cmd.dev,
+			       desc->its_mapvi_cmd.event_id);
+
 	its_encode_cmd(cmd, GITS_CMD_MAPVI);
 	its_encode_devid(cmd, desc->its_mapvi_cmd.dev->device_id);
 	its_encode_event_id(cmd, desc->its_mapvi_cmd.event_id);
 	its_encode_phys_id(cmd, desc->its_mapvi_cmd.phys_id);
-	its_encode_collection(cmd, desc->its_mapvi_cmd.dev->collection->col_id);
+	its_encode_collection(cmd, col->col_id);
 
 	its_fixup_cmd(cmd);
 
-	return desc->its_mapvi_cmd.dev->collection;
+	return col;
 }
 
 static struct its_collection *its_build_movi_cmd(struct its_cmd_block *cmd,
 						 struct its_cmd_desc *desc)
 {
+	struct its_collection *col;
+
+	col = dev_event_to_col(desc->its_movi_cmd.dev,
+			       desc->its_movi_cmd.event_id);
+
 	its_encode_cmd(cmd, GITS_CMD_MOVI);
 	its_encode_devid(cmd, desc->its_movi_cmd.dev->device_id);
-	its_encode_event_id(cmd, desc->its_movi_cmd.id);
+	its_encode_event_id(cmd, desc->its_movi_cmd.event_id);
 	its_encode_collection(cmd, desc->its_movi_cmd.col->col_id);
 
 	its_fixup_cmd(cmd);
 
-	return desc->its_movi_cmd.dev->collection;
+	return col;
 }
 
 static struct its_collection *its_build_discard_cmd(struct its_cmd_block *cmd,
 						    struct its_cmd_desc *desc)
 {
+	struct its_collection *col;
+
+	col = dev_event_to_col(desc->its_discard_cmd.dev,
+			       desc->its_discard_cmd.event_id);
+
 	its_encode_cmd(cmd, GITS_CMD_DISCARD);
 	its_encode_devid(cmd, desc->its_discard_cmd.dev->device_id);
 	its_encode_event_id(cmd, desc->its_discard_cmd.event_id);
 
 	its_fixup_cmd(cmd);
 
-	return desc->its_discard_cmd.dev->collection;
+	return col;
 }
 
 static struct its_collection *its_build_inv_cmd(struct its_cmd_block *cmd,
 						struct its_cmd_desc *desc)
 {
+	struct its_collection *col;
+
+	col = dev_event_to_col(desc->its_inv_cmd.dev,
+			       desc->its_inv_cmd.event_id);
+
 	its_encode_cmd(cmd, GITS_CMD_INV);
 	its_encode_devid(cmd, desc->its_inv_cmd.dev->device_id);
 	its_encode_event_id(cmd, desc->its_inv_cmd.event_id);
 
 	its_fixup_cmd(cmd);
 
-	return desc->its_inv_cmd.dev->collection;
+	return col;
 }
 
 static struct its_collection *its_build_invall_cmd(struct its_cmd_block *cmd,
@@ -497,7 +529,7 @@ static void its_send_movi(struct its_dev
 
 	desc.its_movi_cmd.dev = dev;
 	desc.its_movi_cmd.col = col;
-	desc.its_movi_cmd.id = id;
+	desc.its_movi_cmd.event_id = id;
 
 	its_send_single_command(dev->its, its_build_movi_cmd, &desc);
 }
@@ -528,7 +560,7 @@ static void its_send_invall(struct its_n
 static inline u32 its_get_event_id(struct irq_data *d)
 {
 	struct its_device *its_dev = irq_data_get_irq_chip_data(d);
-	return d->hwirq - its_dev->lpi_base;
+	return d->hwirq - its_dev->event_map.lpi_base;
 }
 
 static void lpi_set_config(struct irq_data *d, bool enable)
@@ -583,7 +615,7 @@ static int its_set_affinity(struct irq_d
 
 	target_col = &its_dev->its->collections[cpu];
 	its_send_movi(its_dev, target_col, id);
-	its_dev->collection = target_col;
+	its_dev->event_map.col_map[id] = cpu;
 
 	return IRQ_SET_MASK_OK_DONE;
 }
@@ -713,8 +745,10 @@ out:
 	return bitmap;
 }
 
-static void its_lpi_free(unsigned long *bitmap, int base, int nr_ids)
+static void its_lpi_free(struct event_lpi_map *map)
 {
+	int base = map->lpi_base;
+	int nr_ids = map->nr_lpis;
 	int lpi;
 
 	spin_lock(&lpi_lock);
@@ -731,7 +765,8 @@ static void its_lpi_free(unsigned long *
 
 	spin_unlock(&lpi_lock);
 
-	kfree(bitmap);
+	kfree(map->lpi_map);
+	kfree(map->col_map);
 }
 
 /*
@@ -1099,11 +1134,11 @@ static struct its_device *its_create_dev
 	struct its_device *dev;
 	unsigned long *lpi_map;
 	unsigned long flags;
+	u16 *col_map = NULL;
 	void *itt;
 	int lpi_base;
 	int nr_lpis;
 	int nr_ites;
-	int cpu;
 	int sz;
 
 	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
@@ -1117,20 +1152,24 @@ static struct its_device *its_create_dev
 	sz = max(sz, ITS_ITT_ALIGN) + ITS_ITT_ALIGN - 1;
 	itt = kzalloc(sz, GFP_KERNEL);
 	lpi_map = its_lpi_alloc_chunks(nvecs, &lpi_base, &nr_lpis);
+	if (lpi_map)
+		col_map = kzalloc(sizeof(*col_map) * nr_lpis, GFP_KERNEL);
 
-	if (!dev || !itt || !lpi_map) {
+	if (!dev || !itt || !lpi_map || !col_map) {
 		kfree(dev);
 		kfree(itt);
 		kfree(lpi_map);
+		kfree(col_map);
 		return NULL;
 	}
 
 	dev->its = its;
 	dev->itt = itt;
 	dev->nr_ites = nr_ites;
-	dev->lpi_map = lpi_map;
-	dev->lpi_base = lpi_base;
-	dev->nr_lpis = nr_lpis;
+	dev->event_map.lpi_map = lpi_map;
+	dev->event_map.col_map = col_map;
+	dev->event_map.lpi_base = lpi_base;
+	dev->event_map.nr_lpis = nr_lpis;
 	dev->device_id = dev_id;
 	INIT_LIST_HEAD(&dev->entry);
 
@@ -1138,10 +1177,6 @@ static struct its_device *its_create_dev
 	list_add(&dev->entry, &its->its_device_list);
 	raw_spin_unlock_irqrestore(&its->lock, flags);
 
-	/* Bind the device to the first possible CPU */
-	cpu = cpumask_first(cpu_online_mask);
-	dev->collection = &its->collections[cpu];
-
 	/* Map device to its ITT */
 	its_send_mapd(dev, 1);
 
@@ -1163,12 +1198,13 @@ static int its_alloc_device_irq(struct i
 {
 	int idx;
 
-	idx = find_first_zero_bit(dev->lpi_map, dev->nr_lpis);
-	if (idx == dev->nr_lpis)
+	idx = find_first_zero_bit(dev->event_map.lpi_map,
+				  dev->event_map.nr_lpis);
+	if (idx == dev->event_map.nr_lpis)
 		return -ENOSPC;
 
-	*hwirq = dev->lpi_base + idx;
-	set_bit(idx, dev->lpi_map);
+	*hwirq = dev->event_map.lpi_base + idx;
+	set_bit(idx, dev->event_map.lpi_map);
 
 	return 0;
 }
@@ -1288,7 +1324,8 @@ static int its_irq_domain_alloc(struct i
 		irq_domain_set_hwirq_and_chip(domain, virq + i,
 					      hwirq, &its_irq_chip, its_dev);
 		dev_dbg(info->scratchpad[1].ptr, "ID:%d pID:%d vID:%d\n",
-			(int)(hwirq - its_dev->lpi_base), (int)hwirq, virq + i);
+			(int)(hwirq - its_dev->event_map.lpi_base),
+			(int)hwirq, virq + i);
 	}
 
 	return 0;
@@ -1300,6 +1337,9 @@ static void its_irq_domain_activate(stru
 	struct its_device *its_dev = irq_data_get_irq_chip_data(d);
 	u32 event = its_get_event_id(d);
 
+	/* Bind the LPI to the first possible CPU */
+	its_dev->event_map.col_map[event] = cpumask_first(cpu_online_mask);
+
 	/* Map the GIC IRQ and event to the device */
 	its_send_mapvi(its_dev, d->hwirq, event);
 }
@@ -1327,17 +1367,16 @@ static void its_irq_domain_free(struct i
 		u32 event = its_get_event_id(data);
 
 		/* Mark interrupt index as unused */
-		clear_bit(event, its_dev->lpi_map);
+		clear_bit(event, its_dev->event_map.lpi_map);
 
 		/* Nuke the entry in the domain */
 		irq_domain_reset_irq_data(data);
 	}
 
 	/* If all interrupts have been freed, start mopping the floor */
-	if (bitmap_empty(its_dev->lpi_map, its_dev->nr_lpis)) {
-		its_lpi_free(its_dev->lpi_map,
-			     its_dev->lpi_base,
-			     its_dev->nr_lpis);
+	if (bitmap_empty(its_dev->event_map.lpi_map,
+			 its_dev->event_map.nr_lpis)) {
+		its_lpi_free(&its_dev->event_map);
 
 		/* Unmap device/itt */
 		its_send_mapd(its_dev, 0);
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/md/dm.c linux-libre-4.1.5-gnu/drivers/md/dm.c
--- linux-libre-4.1.4-gnu/drivers/md/dm.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/md/dm.c	2015-08-10 15:22:34.000000000 -0400
@@ -1053,13 +1053,10 @@ static struct dm_rq_target_io *tio_from_
  */
 static void rq_completed(struct mapped_device *md, int rw, bool run_queue)
 {
-	int nr_requests_pending;
-
 	atomic_dec(&md->pending[rw]);
 
 	/* nudge anyone waiting on suspend queue */
-	nr_requests_pending = md_in_flight(md);
-	if (!nr_requests_pending)
+	if (!md_in_flight(md))
 		wake_up(&md->wait);
 
 	/*
@@ -1071,8 +1068,7 @@ static void rq_completed(struct mapped_d
 	if (run_queue) {
 		if (md->queue->mq_ops)
 			blk_mq_run_hw_queues(md->queue, true);
-		else if (!nr_requests_pending ||
-			 (nr_requests_pending >= md->queue->nr_congestion_on))
+		else
 			blk_run_queue_async(md->queue);
 	}
 
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/md/raid1.c linux-libre-4.1.5-gnu/drivers/md/raid1.c
--- linux-libre-4.1.4-gnu/drivers/md/raid1.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/md/raid1.c	2015-08-10 15:22:34.000000000 -0400
@@ -336,7 +336,7 @@ static void raid1_end_read_request(struc
 		spin_lock_irqsave(&conf->device_lock, flags);
 		if (r1_bio->mddev->degraded == conf->raid_disks ||
 		    (r1_bio->mddev->degraded == conf->raid_disks-1 &&
-		     !test_bit(Faulty, &conf->mirrors[mirror].rdev->flags)))
+		     test_bit(In_sync, &conf->mirrors[mirror].rdev->flags)))
 			uptodate = 1;
 		spin_unlock_irqrestore(&conf->device_lock, flags);
 	}
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/misc/cxl/context.c linux-libre-4.1.5-gnu/drivers/misc/cxl/context.c
--- linux-libre-4.1.4-gnu/drivers/misc/cxl/context.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/misc/cxl/context.c	2015-08-10 15:22:34.000000000 -0400
@@ -113,11 +113,11 @@ static int cxl_mmap_fault(struct vm_area
 
 	if (ctx->afu->current_mode == CXL_MODE_DEDICATED) {
 		area = ctx->afu->psn_phys;
-		if (offset > ctx->afu->adapter->ps_size)
+		if (offset >= ctx->afu->adapter->ps_size)
 			return VM_FAULT_SIGBUS;
 	} else {
 		area = ctx->psn_phys;
-		if (offset > ctx->psn_size)
+		if (offset >= ctx->psn_size)
 			return VM_FAULT_SIGBUS;
 	}
 
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/misc/cxl/main.c linux-libre-4.1.5-gnu/drivers/misc/cxl/main.c
--- linux-libre-4.1.4-gnu/drivers/misc/cxl/main.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/misc/cxl/main.c	2015-08-10 15:22:34.000000000 -0400
@@ -73,7 +73,7 @@ static inline void cxl_slbia_core(struct
 		spin_lock(&adapter->afu_list_lock);
 		for (slice = 0; slice < adapter->slices; slice++) {
 			afu = adapter->afu[slice];
-			if (!afu->enabled)
+			if (!afu || !afu->enabled)
 				continue;
 			rcu_read_lock();
 			idr_for_each_entry(&afu->contexts_idr, ctx, id)
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/misc/mei/main.c linux-libre-4.1.5-gnu/drivers/misc/mei/main.c
--- linux-libre-4.1.4-gnu/drivers/misc/mei/main.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/misc/mei/main.c	2015-08-10 15:22:34.000000000 -0400
@@ -685,7 +685,7 @@ int mei_register(struct mei_device *dev,
 	/* Fill in the data structures */
 	devno = MKDEV(MAJOR(mei_devt), dev->minor);
 	cdev_init(&dev->cdev, &mei_fops);
-	dev->cdev.owner = mei_fops.owner;
+	dev->cdev.owner = parent->driver->owner;
 
 	/* Add the device */
 	ret = cdev_add(&dev->cdev, devno, 1);
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/mmc/host/omap_hsmmc.c linux-libre-4.1.5-gnu/drivers/mmc/host/omap_hsmmc.c
--- linux-libre-4.1.4-gnu/drivers/mmc/host/omap_hsmmc.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/mmc/host/omap_hsmmc.c	2015-08-10 15:22:34.000000000 -0400
@@ -1062,6 +1062,10 @@ static void omap_hsmmc_do_irq(struct oma
 
 		if (status & (CTO_EN | CCRC_EN))
 			end_cmd = 1;
+		if (host->data || host->response_busy) {
+			end_trans = !end_cmd;
+			host->response_busy = 0;
+		}
 		if (status & (CTO_EN | DTO_EN))
 			hsmmc_command_incomplete(host, -ETIMEDOUT, end_cmd);
 		else if (status & (CCRC_EN | DCRC_EN))
@@ -1081,10 +1085,6 @@ static void omap_hsmmc_do_irq(struct oma
 			}
 			dev_dbg(mmc_dev(host->mmc), "AC12 err: 0x%x\n", ac12);
 		}
-		if (host->data || host->response_busy) {
-			end_trans = !end_cmd;
-			host->response_busy = 0;
-		}
 	}
 
 	OMAP_HSMMC_WRITE(host->base, STAT, status);
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/mmc/host/sdhci.c linux-libre-4.1.5-gnu/drivers/mmc/host/sdhci.c
--- linux-libre-4.1.4-gnu/drivers/mmc/host/sdhci.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/mmc/host/sdhci.c	2015-08-10 15:22:34.000000000 -0400
@@ -3037,8 +3037,11 @@ int sdhci_add_host(struct sdhci_host *ho
 						      GFP_KERNEL);
 		host->align_buffer = kmalloc(host->align_buffer_sz, GFP_KERNEL);
 		if (!host->adma_table || !host->align_buffer) {
-			dma_free_coherent(mmc_dev(mmc), host->adma_table_sz,
-					  host->adma_table, host->adma_addr);
+			if (host->adma_table)
+				dma_free_coherent(mmc_dev(mmc),
+						  host->adma_table_sz,
+						  host->adma_table,
+						  host->adma_addr);
 			kfree(host->align_buffer);
 			pr_warn("%s: Unable to allocate ADMA buffers - falling back to standard DMA\n",
 				mmc_hostname(mmc));
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/mmc/host/sdhci-esdhc.h linux-libre-4.1.5-gnu/drivers/mmc/host/sdhci-esdhc.h
--- linux-libre-4.1.4-gnu/drivers/mmc/host/sdhci-esdhc.h	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/mmc/host/sdhci-esdhc.h	2015-08-10 15:22:34.000000000 -0400
@@ -45,6 +45,6 @@
 #define ESDHC_DMA_SYSCTL	0x40c
 #define ESDHC_DMA_SNOOP		0x00000040
 
-#define ESDHC_HOST_CONTROL_RES	0x05
+#define ESDHC_HOST_CONTROL_RES	0x01
 
 #endif /* _DRIVERS_MMC_SDHCI_ESDHC_H */
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/mmc/host/sdhci-pxav3.c linux-libre-4.1.5-gnu/drivers/mmc/host/sdhci-pxav3.c
--- linux-libre-4.1.4-gnu/drivers/mmc/host/sdhci-pxav3.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/mmc/host/sdhci-pxav3.c	2015-08-10 15:22:34.000000000 -0400
@@ -411,6 +411,7 @@ static int sdhci_pxav3_probe(struct plat
 			goto err_of_parse;
 		sdhci_get_of_property(pdev);
 		pdata = pxav3_get_mmc_pdata(dev);
+		pdev->dev.platform_data = pdata;
 	} else if (pdata) {
 		/* on-chip device */
 		if (pdata->flags & PXA_FLAG_CARD_PERMANENT)
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/net/can/c_can/c_can.c linux-libre-4.1.5-gnu/drivers/net/can/c_can/c_can.c
--- linux-libre-4.1.4-gnu/drivers/net/can/c_can/c_can.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/net/can/c_can/c_can.c	2015-08-10 15:22:34.000000000 -0400
@@ -592,6 +592,7 @@ static int c_can_start(struct net_device
 {
 	struct c_can_priv *priv = netdev_priv(dev);
 	int err;
+	struct pinctrl *p;
 
 	/* basic c_can configuration */
 	err = c_can_chip_config(dev);
@@ -604,8 +605,13 @@ static int c_can_start(struct net_device
 
 	priv->can.state = CAN_STATE_ERROR_ACTIVE;
 
-	/* activate pins */
-	pinctrl_pm_select_default_state(dev->dev.parent);
+	/* Attempt to use "active" if available else use "default" */
+	p = pinctrl_get_select(priv->device, "active");
+	if (!IS_ERR(p))
+		pinctrl_put(p);
+	else
+		pinctrl_pm_select_default_state(priv->device);
+
 	return 0;
 }
 
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/net/can/dev.c linux-libre-4.1.5-gnu/drivers/net/can/dev.c
--- linux-libre-4.1.4-gnu/drivers/net/can/dev.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/net/can/dev.c	2015-08-10 15:22:34.000000000 -0400
@@ -440,9 +440,6 @@ unsigned int can_get_echo_skb(struct net
 		struct can_frame *cf = (struct can_frame *)skb->data;
 		u8 dlc = cf->can_dlc;
 
-		if (!(skb->tstamp.tv64))
-			__net_timestamp(skb);
-
 		netif_rx(priv->echo_skb[idx]);
 		priv->echo_skb[idx] = NULL;
 
@@ -578,7 +575,6 @@ struct sk_buff *alloc_can_skb(struct net
 	if (unlikely(!skb))
 		return NULL;
 
-	__net_timestamp(skb);
 	skb->protocol = htons(ETH_P_CAN);
 	skb->pkt_type = PACKET_BROADCAST;
 	skb->ip_summed = CHECKSUM_UNNECESSARY;
@@ -589,6 +585,7 @@ struct sk_buff *alloc_can_skb(struct net
 
 	can_skb_reserve(skb);
 	can_skb_prv(skb)->ifindex = dev->ifindex;
+	can_skb_prv(skb)->skbcnt = 0;
 
 	*cf = (struct can_frame *)skb_put(skb, sizeof(struct can_frame));
 	memset(*cf, 0, sizeof(struct can_frame));
@@ -607,7 +604,6 @@ struct sk_buff *alloc_canfd_skb(struct n
 	if (unlikely(!skb))
 		return NULL;
 
-	__net_timestamp(skb);
 	skb->protocol = htons(ETH_P_CANFD);
 	skb->pkt_type = PACKET_BROADCAST;
 	skb->ip_summed = CHECKSUM_UNNECESSARY;
@@ -618,6 +614,7 @@ struct sk_buff *alloc_canfd_skb(struct n
 
 	can_skb_reserve(skb);
 	can_skb_prv(skb)->ifindex = dev->ifindex;
+	can_skb_prv(skb)->skbcnt = 0;
 
 	*cfd = (struct canfd_frame *)skb_put(skb, sizeof(struct canfd_frame));
 	memset(*cfd, 0, sizeof(struct canfd_frame));
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/net/can/rcar_can.c linux-libre-4.1.5-gnu/drivers/net/can/rcar_can.c
--- linux-libre-4.1.4-gnu/drivers/net/can/rcar_can.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/net/can/rcar_can.c	2015-08-10 15:22:34.000000000 -0400
@@ -526,7 +526,7 @@ static int rcar_can_open(struct net_devi
 	napi_enable(&priv->napi);
 	err = request_irq(ndev->irq, rcar_can_interrupt, 0, ndev->name, ndev);
 	if (err) {
-		netdev_err(ndev, "error requesting interrupt %x\n", ndev->irq);
+		netdev_err(ndev, "error requesting interrupt %d\n", ndev->irq);
 		goto out_close;
 	}
 	can_led_event(ndev, CAN_LED_EVENT_OPEN);
@@ -758,8 +758,9 @@ static int rcar_can_probe(struct platfor
 	}
 
 	irq = platform_get_irq(pdev, 0);
-	if (!irq) {
+	if (irq < 0) {
 		dev_err(&pdev->dev, "No IRQ resource\n");
+		err = irq;
 		goto fail;
 	}
 
@@ -823,7 +824,7 @@ static int rcar_can_probe(struct platfor
 
 	devm_can_led_init(ndev);
 
-	dev_info(&pdev->dev, "device registered (reg_base=%p, irq=%u)\n",
+	dev_info(&pdev->dev, "device registered (regs @ %p, IRQ%d)\n",
 		 priv->regs, ndev->irq);
 
 	return 0;
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/net/can/slcan.c linux-libre-4.1.5-gnu/drivers/net/can/slcan.c
--- linux-libre-4.1.4-gnu/drivers/net/can/slcan.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/net/can/slcan.c	2015-08-10 15:22:34.000000000 -0400
@@ -207,7 +207,6 @@ static void slc_bump(struct slcan *sl)
 	if (!skb)
 		return;
 
-	__net_timestamp(skb);
 	skb->dev = sl->dev;
 	skb->protocol = htons(ETH_P_CAN);
 	skb->pkt_type = PACKET_BROADCAST;
@@ -215,6 +214,7 @@ static void slc_bump(struct slcan *sl)
 
 	can_skb_reserve(skb);
 	can_skb_prv(skb)->ifindex = sl->dev->ifindex;
+	can_skb_prv(skb)->skbcnt = 0;
 
 	memcpy(skb_put(skb, sizeof(struct can_frame)),
 	       &cf, sizeof(struct can_frame));
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/net/can/spi/mcp251x.c linux-libre-4.1.5-gnu/drivers/net/can/spi/mcp251x.c
--- linux-libre-4.1.4-gnu/drivers/net/can/spi/mcp251x.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/net/can/spi/mcp251x.c	2015-08-10 15:22:34.000000000 -0400
@@ -1221,17 +1221,16 @@ static int __maybe_unused mcp251x_can_re
 	struct spi_device *spi = to_spi_device(dev);
 	struct mcp251x_priv *priv = spi_get_drvdata(spi);
 
-	if (priv->after_suspend & AFTER_SUSPEND_POWER) {
+	if (priv->after_suspend & AFTER_SUSPEND_POWER)
 		mcp251x_power_enable(priv->power, 1);
+
+	if (priv->after_suspend & AFTER_SUSPEND_UP) {
+		mcp251x_power_enable(priv->transceiver, 1);
 		queue_work(priv->wq, &priv->restart_work);
 	} else {
-		if (priv->after_suspend & AFTER_SUSPEND_UP) {
-			mcp251x_power_enable(priv->transceiver, 1);
-			queue_work(priv->wq, &priv->restart_work);
-		} else {
-			priv->after_suspend = 0;
-		}
+		priv->after_suspend = 0;
 	}
+
 	priv->force_quit = 0;
 	enable_irq(spi->irq);
 	return 0;
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/net/can/vcan.c linux-libre-4.1.5-gnu/drivers/net/can/vcan.c
--- linux-libre-4.1.4-gnu/drivers/net/can/vcan.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/net/can/vcan.c	2015-08-10 15:22:34.000000000 -0400
@@ -78,9 +78,6 @@ static void vcan_rx(struct sk_buff *skb,
 	skb->dev       = dev;
 	skb->ip_summed = CHECKSUM_UNNECESSARY;
 
-	if (!(skb->tstamp.tv64))
-		__net_timestamp(skb);
-
 	netif_rx_ni(skb);
 }
 
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/net/wireless/iwlwifi/iwl-nvm-parse.c linux-libre-4.1.5-gnu/drivers/net/wireless/iwlwifi/iwl-nvm-parse.c
--- linux-libre-4.1.4-gnu/drivers/net/wireless/iwlwifi/iwl-nvm-parse.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/net/wireless/iwlwifi/iwl-nvm-parse.c	2015-08-10 15:22:34.000000000 -0400
@@ -540,13 +540,11 @@ static void iwl_set_hw_address_family_80
 		hw_addr = (const u8 *)(mac_override +
 				 MAC_ADDRESS_OVERRIDE_FAMILY_8000);
 
-		/* The byte order is little endian 16 bit, meaning 214365 */
-		data->hw_addr[0] = hw_addr[1];
-		data->hw_addr[1] = hw_addr[0];
-		data->hw_addr[2] = hw_addr[3];
-		data->hw_addr[3] = hw_addr[2];
-		data->hw_addr[4] = hw_addr[5];
-		data->hw_addr[5] = hw_addr[4];
+		/*
+		 * Store the MAC address from MAO section.
+		 * No byte swapping is required in MAO section
+		 */
+		memcpy(data->hw_addr, hw_addr, ETH_ALEN);
 
 		/*
 		 * Force the use of the OTP MAC address in case of reserved MAC
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/net/wireless/iwlwifi/mvm/tx.c linux-libre-4.1.5-gnu/drivers/net/wireless/iwlwifi/mvm/tx.c
--- linux-libre-4.1.4-gnu/drivers/net/wireless/iwlwifi/mvm/tx.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/net/wireless/iwlwifi/mvm/tx.c	2015-08-10 15:22:34.000000000 -0400
@@ -225,7 +225,7 @@ void iwl_mvm_set_tx_cmd_rate(struct iwl_
 
 	if (info->band == IEEE80211_BAND_2GHZ &&
 	    !iwl_mvm_bt_coex_is_shared_ant_avail(mvm))
-		rate_flags = BIT(mvm->cfg->non_shared_ant) << RATE_MCS_ANT_POS;
+		rate_flags = mvm->cfg->non_shared_ant << RATE_MCS_ANT_POS;
 	else
 		rate_flags =
 			BIT(mvm->mgmt_last_antenna_idx) << RATE_MCS_ANT_POS;
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/net/wireless/iwlwifi/pcie/trans.c linux-libre-4.1.5-gnu/drivers/net/wireless/iwlwifi/pcie/trans.c
--- linux-libre-4.1.4-gnu/drivers/net/wireless/iwlwifi/pcie/trans.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/net/wireless/iwlwifi/pcie/trans.c	2015-08-10 15:22:34.000000000 -0400
@@ -2515,6 +2515,12 @@ struct iwl_trans *iwl_trans_pcie_alloc(s
 		trans->hw_rev = (trans->hw_rev & 0xfff0) |
 				(CSR_HW_REV_STEP(trans->hw_rev << 2) << 2);
 
+		ret = iwl_pcie_prepare_card_hw(trans);
+		if (ret) {
+			IWL_WARN(trans, "Exit HW not ready\n");
+			goto out_pci_disable_msi;
+		}
+
 		/*
 		 * in-order to recognize C step driver should read chip version
 		 * id located at the AUX bus MISC address space.
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/pinctrl/freescale/pinctrl-imx1-core.c linux-libre-4.1.5-gnu/drivers/pinctrl/freescale/pinctrl-imx1-core.c
--- linux-libre-4.1.4-gnu/drivers/pinctrl/freescale/pinctrl-imx1-core.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/pinctrl/freescale/pinctrl-imx1-core.c	2015-08-10 15:22:34.000000000 -0400
@@ -403,14 +403,13 @@ static int imx1_pinconf_set(struct pinct
 			     unsigned num_configs)
 {
 	struct imx1_pinctrl *ipctl = pinctrl_dev_get_drvdata(pctldev);
-	const struct imx1_pinctrl_soc_info *info = ipctl->info;
 	int i;
 
 	for (i = 0; i != num_configs; ++i) {
 		imx1_write_bit(ipctl, pin_id, configs[i] & 0x01, MX1_PUEN);
 
 		dev_dbg(ipctl->dev, "pinconf set pullup pin %s\n",
-			info->pins[pin_id].name);
+			pin_desc_get(pctldev, pin_id)->name);
 	}
 
 	return 0;
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/regulator/s2mps11.c linux-libre-4.1.5-gnu/drivers/regulator/s2mps11.c
--- linux-libre-4.1.4-gnu/drivers/regulator/s2mps11.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/regulator/s2mps11.c	2015-08-10 15:22:34.000000000 -0400
@@ -34,6 +34,8 @@
 #include <linux/mfd/samsung/s2mps14.h>
 #include <linux/mfd/samsung/s2mpu02.h>
 
+/* The highest number of possible regulators for supported devices. */
+#define S2MPS_REGULATOR_MAX		S2MPS13_REGULATOR_MAX
 struct s2mps11_info {
 	unsigned int rdev_num;
 	int ramp_delay2;
@@ -49,7 +51,7 @@ struct s2mps11_info {
 	 * One bit for each S2MPS13/S2MPS14/S2MPU02 regulator whether
 	 * the suspend mode was enabled.
 	 */
-	unsigned long long s2mps14_suspend_state:50;
+	DECLARE_BITMAP(suspend_state, S2MPS_REGULATOR_MAX);
 
 	/* Array of size rdev_num with GPIO-s for external sleep control */
 	int *ext_control_gpio;
@@ -500,7 +502,7 @@ static int s2mps14_regulator_enable(stru
 	switch (s2mps11->dev_type) {
 	case S2MPS13X:
 	case S2MPS14X:
-		if (s2mps11->s2mps14_suspend_state & (1 << rdev_get_id(rdev)))
+		if (test_bit(rdev_get_id(rdev), s2mps11->suspend_state))
 			val = S2MPS14_ENABLE_SUSPEND;
 		else if (gpio_is_valid(s2mps11->ext_control_gpio[rdev_get_id(rdev)]))
 			val = S2MPS14_ENABLE_EXT_CONTROL;
@@ -508,7 +510,7 @@ static int s2mps14_regulator_enable(stru
 			val = rdev->desc->enable_mask;
 		break;
 	case S2MPU02:
-		if (s2mps11->s2mps14_suspend_state & (1 << rdev_get_id(rdev)))
+		if (test_bit(rdev_get_id(rdev), s2mps11->suspend_state))
 			val = S2MPU02_ENABLE_SUSPEND;
 		else
 			val = rdev->desc->enable_mask;
@@ -562,7 +564,7 @@ static int s2mps14_regulator_set_suspend
 	if (ret < 0)
 		return ret;
 
-	s2mps11->s2mps14_suspend_state |= (1 << rdev_get_id(rdev));
+	set_bit(rdev_get_id(rdev), s2mps11->suspend_state);
 	/*
 	 * Don't enable suspend mode if regulator is already disabled because
 	 * this would effectively for a short time turn on the regulator after
@@ -960,18 +962,22 @@ static int s2mps11_pmic_probe(struct pla
 	case S2MPS11X:
 		s2mps11->rdev_num = ARRAY_SIZE(s2mps11_regulators);
 		regulators = s2mps11_regulators;
+		BUILD_BUG_ON(S2MPS_REGULATOR_MAX < s2mps11->rdev_num);
 		break;
 	case S2MPS13X:
 		s2mps11->rdev_num = ARRAY_SIZE(s2mps13_regulators);
 		regulators = s2mps13_regulators;
+		BUILD_BUG_ON(S2MPS_REGULATOR_MAX < s2mps11->rdev_num);
 		break;
 	case S2MPS14X:
 		s2mps11->rdev_num = ARRAY_SIZE(s2mps14_regulators);
 		regulators = s2mps14_regulators;
+		BUILD_BUG_ON(S2MPS_REGULATOR_MAX < s2mps11->rdev_num);
 		break;
 	case S2MPU02:
 		s2mps11->rdev_num = ARRAY_SIZE(s2mpu02_regulators);
 		regulators = s2mpu02_regulators;
+		BUILD_BUG_ON(S2MPS_REGULATOR_MAX < s2mps11->rdev_num);
 		break;
 	default:
 		dev_err(&pdev->dev, "Invalid device type: %u\n",
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/scsi/qla2xxx/qla_dbg.c linux-libre-4.1.5-gnu/drivers/scsi/qla2xxx/qla_dbg.c
--- linux-libre-4.1.4-gnu/drivers/scsi/qla2xxx/qla_dbg.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/scsi/qla2xxx/qla_dbg.c	2015-08-10 15:22:34.000000000 -0400
@@ -68,7 +68,7 @@
  * |                              |                    | 0xd101-0xd1fe	|
  * |                              |                    | 0xd214-0xd2fe	|
  * | Target Mode		  |	  0xe079       |		|
- * | Target Mode Management	  |	  0xf072       | 0xf002		|
+ * | Target Mode Management	  |	  0xf080       | 0xf002		|
  * |                              |                    | 0xf046-0xf049  |
  * | Target Mode Task Management  |	  0x1000b      |		|
  * ----------------------------------------------------------------------
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/scsi/qla2xxx/qla_init.c linux-libre-4.1.5-gnu/drivers/scsi/qla2xxx/qla_init.c
--- linux-libre-4.1.4-gnu/drivers/scsi/qla2xxx/qla_init.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/scsi/qla2xxx/qla_init.c	2015-08-10 15:22:34.000000000 -0400
@@ -2924,6 +2924,7 @@ qla2x00_rport_del(void *data)
 	struct fc_rport *rport;
 	scsi_qla_host_t *vha = fcport->vha;
 	unsigned long flags;
+	unsigned long vha_flags;
 
 	spin_lock_irqsave(fcport->vha->host->host_lock, flags);
 	rport = fcport->drport ? fcport->drport: fcport->rport;
@@ -2935,7 +2936,9 @@ qla2x00_rport_del(void *data)
 		 * Release the target mode FC NEXUS in qla_target.c code
 		 * if target mod is enabled.
 		 */
+		spin_lock_irqsave(&vha->hw->hardware_lock, vha_flags);
 		qlt_fc_port_deleted(vha, fcport);
+		spin_unlock_irqrestore(&vha->hw->hardware_lock, vha_flags);
 	}
 }
 
@@ -3303,6 +3306,7 @@ qla2x00_reg_remote_port(scsi_qla_host_t
 	 * Create target mode FC NEXUS in qla_target.c if target mode is
 	 * enabled..
 	 */
+
 	qlt_fc_port_added(vha, fcport);
 
 	spin_lock_irqsave(fcport->vha->host->host_lock, flags);
@@ -3460,20 +3464,43 @@ qla2x00_configure_fabric(scsi_qla_host_t
 			if ((fcport->flags & FCF_FABRIC_DEVICE) == 0)
 				continue;
 
-			if (fcport->scan_state == QLA_FCPORT_SCAN &&
-			    atomic_read(&fcport->state) == FCS_ONLINE) {
-				qla2x00_mark_device_lost(vha, fcport,
-				    ql2xplogiabsentdevice, 0);
-				if (fcport->loop_id != FC_NO_LOOP_ID &&
-				    (fcport->flags & FCF_FCP2_DEVICE) == 0 &&
-				    fcport->port_type != FCT_INITIATOR &&
-				    fcport->port_type != FCT_BROADCAST) {
-					ha->isp_ops->fabric_logout(vha,
-					    fcport->loop_id,
-					    fcport->d_id.b.domain,
-					    fcport->d_id.b.area,
-					    fcport->d_id.b.al_pa);
-					qla2x00_clear_loop_id(fcport);
+			if (fcport->scan_state == QLA_FCPORT_SCAN) {
+				if (qla_ini_mode_enabled(base_vha) &&
+				    atomic_read(&fcport->state) == FCS_ONLINE) {
+					qla2x00_mark_device_lost(vha, fcport,
+					    ql2xplogiabsentdevice, 0);
+					if (fcport->loop_id != FC_NO_LOOP_ID &&
+					    (fcport->flags & FCF_FCP2_DEVICE) == 0 &&
+					    fcport->port_type != FCT_INITIATOR &&
+					    fcport->port_type != FCT_BROADCAST) {
+						ha->isp_ops->fabric_logout(vha,
+						    fcport->loop_id,
+						    fcport->d_id.b.domain,
+						    fcport->d_id.b.area,
+						    fcport->d_id.b.al_pa);
+						qla2x00_clear_loop_id(fcport);
+					}
+				} else if (!qla_ini_mode_enabled(base_vha)) {
+					/*
+					 * In target mode, explicitly kill
+					 * sessions and log out of devices
+					 * that are gone, so that we don't
+					 * end up with an initiator using the
+					 * wrong ACL (if the fabric recycles
+					 * an FC address and we have a stale
+					 * session around) and so that we don't
+					 * report initiators that are no longer
+					 * on the fabric.
+					 */
+					ql_dbg(ql_dbg_tgt_mgt, vha, 0xf077,
+					    "port gone, logging out/killing session: "
+					    "%8phC state 0x%x flags 0x%x fc4_type 0x%x "
+					    "scan_state %d\n",
+					    fcport->port_name,
+					    atomic_read(&fcport->state),
+					    fcport->flags, fcport->fc4_type,
+					    fcport->scan_state);
+					qlt_fc_port_deleted(vha, fcport);
 				}
 			}
 		}
@@ -3494,6 +3521,28 @@ qla2x00_configure_fabric(scsi_qla_host_t
 			    (fcport->flags & FCF_LOGIN_NEEDED) == 0)
 				continue;
 
+			/*
+			 * If we're not an initiator, skip looking for devices
+			 * and logging in.  There's no reason for us to do it,
+			 * and it seems to actively cause problems in target
+			 * mode if we race with the initiator logging into us
+			 * (we might get the "port ID used" status back from
+			 * our login command and log out the initiator, which
+			 * seems to cause havoc).
+			 */
+			if (!qla_ini_mode_enabled(base_vha)) {
+				if (fcport->scan_state == QLA_FCPORT_FOUND) {
+					ql_dbg(ql_dbg_tgt_mgt, vha, 0xf078,
+					    "port %8phC state 0x%x flags 0x%x fc4_type 0x%x "
+					    "scan_state %d (initiator mode disabled; skipping "
+					    "login)\n", fcport->port_name,
+					    atomic_read(&fcport->state),
+					    fcport->flags, fcport->fc4_type,
+					    fcport->scan_state);
+				}
+				continue;
+			}
+
 			if (fcport->loop_id == FC_NO_LOOP_ID) {
 				fcport->loop_id = next_loopid;
 				rval = qla2x00_find_new_loop_id(
@@ -3520,16 +3569,38 @@ qla2x00_configure_fabric(scsi_qla_host_t
 			    test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags))
 				break;
 
-			/* Find a new loop ID to use. */
-			fcport->loop_id = next_loopid;
-			rval = qla2x00_find_new_loop_id(base_vha, fcport);
-			if (rval != QLA_SUCCESS) {
-				/* Ran out of IDs to use */
-				break;
-			}
+			/*
+			 * If we're not an initiator, skip looking for devices
+			 * and logging in.  There's no reason for us to do it,
+			 * and it seems to actively cause problems in target
+			 * mode if we race with the initiator logging into us
+			 * (we might get the "port ID used" status back from
+			 * our login command and log out the initiator, which
+			 * seems to cause havoc).
+			 */
+			if (qla_ini_mode_enabled(base_vha)) {
+				/* Find a new loop ID to use. */
+				fcport->loop_id = next_loopid;
+				rval = qla2x00_find_new_loop_id(base_vha,
+				    fcport);
+				if (rval != QLA_SUCCESS) {
+					/* Ran out of IDs to use */
+					break;
+				}
 
-			/* Login and update database */
-			qla2x00_fabric_dev_login(vha, fcport, &next_loopid);
+				/* Login and update database */
+				qla2x00_fabric_dev_login(vha, fcport,
+				    &next_loopid);
+			} else {
+				ql_dbg(ql_dbg_tgt_mgt, vha, 0xf079,
+					"new port %8phC state 0x%x flags 0x%x fc4_type "
+					"0x%x scan_state %d (initiator mode disabled; "
+					"skipping login)\n",
+					fcport->port_name,
+					atomic_read(&fcport->state),
+					fcport->flags, fcport->fc4_type,
+					fcport->scan_state);
+			}
 
 			list_move_tail(&fcport->list, &vha->vp_fcports);
 		}
@@ -3725,11 +3796,12 @@ qla2x00_find_all_fabric_devs(scsi_qla_ho
 			fcport->fp_speed = new_fcport->fp_speed;
 
 			/*
-			 * If address the same and state FCS_ONLINE, nothing
-			 * changed.
+			 * If address the same and state FCS_ONLINE
+			 * (or in target mode), nothing changed.
 			 */
 			if (fcport->d_id.b24 == new_fcport->d_id.b24 &&
-			    atomic_read(&fcport->state) == FCS_ONLINE) {
+			    (atomic_read(&fcport->state) == FCS_ONLINE ||
+			     !qla_ini_mode_enabled(base_vha))) {
 				break;
 			}
 
@@ -3749,6 +3821,22 @@ qla2x00_find_all_fabric_devs(scsi_qla_ho
 			 * Log it out if still logged in and mark it for
 			 * relogin later.
 			 */
+			if (!qla_ini_mode_enabled(base_vha)) {
+				ql_dbg(ql_dbg_tgt_mgt, vha, 0xf080,
+					 "port changed FC ID, %8phC"
+					 " old %x:%x:%x (loop_id 0x%04x)-> new %x:%x:%x\n",
+					 fcport->port_name,
+					 fcport->d_id.b.domain,
+					 fcport->d_id.b.area,
+					 fcport->d_id.b.al_pa,
+					 fcport->loop_id,
+					 new_fcport->d_id.b.domain,
+					 new_fcport->d_id.b.area,
+					 new_fcport->d_id.b.al_pa);
+				fcport->d_id.b24 = new_fcport->d_id.b24;
+				break;
+			}
+
 			fcport->d_id.b24 = new_fcport->d_id.b24;
 			fcport->flags |= FCF_LOGIN_NEEDED;
 			if (fcport->loop_id != FC_NO_LOOP_ID &&
@@ -3768,6 +3856,7 @@ qla2x00_find_all_fabric_devs(scsi_qla_ho
 		if (found)
 			continue;
 		/* If device was not in our fcports list, then add it. */
+		new_fcport->scan_state = QLA_FCPORT_FOUND;
 		list_add_tail(&new_fcport->list, new_fcports);
 
 		/* Allocate a new replacement fcport. */
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/scsi/qla2xxx/qla_target.c linux-libre-4.1.5-gnu/drivers/scsi/qla2xxx/qla_target.c
--- linux-libre-4.1.4-gnu/drivers/scsi/qla2xxx/qla_target.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/scsi/qla2xxx/qla_target.c	2015-08-10 15:22:34.000000000 -0400
@@ -113,6 +113,7 @@ static void qlt_abort_cmd_on_host_reset(
 static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
 	struct atio_from_isp *atio, uint16_t status, int qfull);
 static void qlt_disable_vha(struct scsi_qla_host *vha);
+static void qlt_clear_tgt_db(struct qla_tgt *tgt);
 /*
  * Global Variables
  */
@@ -431,10 +432,10 @@ static int qlt_reset(struct scsi_qla_hos
 
 	loop_id = le16_to_cpu(n->u.isp24.nport_handle);
 	if (loop_id == 0xFFFF) {
-#if 0 /* FIXME: Re-enable Global event handling.. */
 		/* Global event */
-		atomic_inc(&ha->tgt.qla_tgt->tgt_global_resets_count);
-		qlt_clear_tgt_db(ha->tgt.qla_tgt);
+		atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
+		qlt_clear_tgt_db(vha->vha_tgt.qla_tgt);
+#if 0 /* FIXME: do we need to choose a session here? */
 		if (!list_empty(&ha->tgt.qla_tgt->sess_list)) {
 			sess = list_entry(ha->tgt.qla_tgt->sess_list.next,
 			    typeof(*sess), sess_list_entry);
@@ -782,25 +783,20 @@ void qlt_fc_port_added(struct scsi_qla_h
 
 void qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport)
 {
-	struct qla_hw_data *ha = vha->hw;
 	struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
 	struct qla_tgt_sess *sess;
-	unsigned long flags;
 
 	if (!vha->hw->tgt.tgt_ops)
 		return;
 
-	if (!tgt || (fcport->port_type != FCT_INITIATOR))
+	if (!tgt)
 		return;
 
-	spin_lock_irqsave(&ha->hardware_lock, flags);
 	if (tgt->tgt_stop) {
-		spin_unlock_irqrestore(&ha->hardware_lock, flags);
 		return;
 	}
 	sess = qlt_find_sess_by_port_name(tgt, fcport->port_name);
 	if (!sess) {
-		spin_unlock_irqrestore(&ha->hardware_lock, flags);
 		return;
 	}
 
@@ -808,7 +804,6 @@ void qlt_fc_port_deleted(struct scsi_qla
 
 	sess->local = 1;
 	qlt_schedule_sess_for_deletion(sess, false);
-	spin_unlock_irqrestore(&ha->hardware_lock, flags);
 }
 
 static inline int test_tgt_sess_count(struct qla_tgt *tgt)
@@ -2347,9 +2342,10 @@ int qlt_xmit_response(struct qla_tgt_cmd
 		res = qlt_build_ctio_crc2_pkt(&prm, vha);
 	else
 		res = qlt_24xx_build_ctio_pkt(&prm, vha);
-	if (unlikely(res != 0))
+	if (unlikely(res != 0)) {
+		vha->req->cnt += full_req_cnt;
 		goto out_unmap_unlock;
-
+	}
 
 	pkt = (struct ctio7_to_24xx *)prm.pkt;
 
@@ -2487,8 +2483,11 @@ int qlt_rdy_to_xfer(struct qla_tgt_cmd *
 	else
 		res = qlt_24xx_build_ctio_pkt(&prm, vha);
 
-	if (unlikely(res != 0))
+	if (unlikely(res != 0)) {
+		vha->req->cnt += prm.req_cnt;
 		goto out_unlock_free_unmap;
+	}
+
 	pkt = (struct ctio7_to_24xx *)prm.pkt;
 	pkt->u.status0.flags |= __constant_cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
 	    CTIO7_FLAGS_STATUS_MODE_0);
@@ -2717,7 +2716,7 @@ static int __qlt_send_term_exchange(stru
 static void qlt_send_term_exchange(struct scsi_qla_host *vha,
 	struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked)
 {
-	unsigned long flags;
+	unsigned long flags = 0;
 	int rc;
 
 	if (qlt_issue_marker(vha, ha_locked) < 0)
@@ -2733,17 +2732,18 @@ static void qlt_send_term_exchange(struc
 	rc = __qlt_send_term_exchange(vha, cmd, atio);
 	if (rc == -ENOMEM)
 		qlt_alloc_qfull_cmd(vha, atio, 0, 0);
-	spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
 
 done:
 	if (cmd && ((cmd->state != QLA_TGT_STATE_ABORTED) ||
 	    !cmd->cmd_sent_to_fw)) {
-		if (!ha_locked && !in_interrupt())
-			msleep(250); /* just in case */
-
-		qlt_unmap_sg(vha, cmd);
+		if (cmd->sg_mapped)
+			qlt_unmap_sg(vha, cmd);
 		vha->hw->tgt.tgt_ops->free_cmd(cmd);
 	}
+
+	if (!ha_locked)
+		spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
+
 	return;
 }
 
@@ -3347,6 +3347,11 @@ static struct qla_tgt_cmd *qlt_get_tag(s
 	cmd->loop_id = sess->loop_id;
 	cmd->conf_compl_supported = sess->conf_compl_supported;
 
+	cmd->cmd_flags = 0;
+	cmd->jiffies_at_alloc = get_jiffies_64();
+
+	cmd->reset_count = vha->hw->chip_reset;
+
 	return cmd;
 }
 
@@ -3453,11 +3458,6 @@ static int qlt_handle_cmd_for_atio(struc
 		return -ENOMEM;
 	}
 
-	cmd->cmd_flags = 0;
-	cmd->jiffies_at_alloc = get_jiffies_64();
-
-	cmd->reset_count = vha->hw->chip_reset;
-
 	cmd->cmd_in_wq = 1;
 	cmd->cmd_flags |= BIT_0;
 	INIT_WORK(&cmd->work, qlt_do_work);
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/scsi/scsi_error.c linux-libre-4.1.5-gnu/drivers/scsi/scsi_error.c
--- linux-libre-4.1.4-gnu/drivers/scsi/scsi_error.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/scsi/scsi_error.c	2015-08-10 15:22:34.000000000 -0400
@@ -944,7 +944,7 @@ void scsi_eh_prep_cmnd(struct scsi_cmnd
 			    scmd->sdb.length);
 		scmd->sdb.table.sgl = &ses->sense_sgl;
 		scmd->sc_data_direction = DMA_FROM_DEVICE;
-		scmd->sdb.table.nents = 1;
+		scmd->sdb.table.nents = scmd->sdb.table.orig_nents = 1;
 		scmd->cmnd[0] = REQUEST_SENSE;
 		scmd->cmnd[4] = scmd->sdb.length;
 		scmd->cmd_len = COMMAND_SIZE(scmd->cmnd[0]);
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/scsi/scsi_lib.c linux-libre-4.1.5-gnu/drivers/scsi/scsi_lib.c
--- linux-libre-4.1.4-gnu/drivers/scsi/scsi_lib.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/scsi/scsi_lib.c	2015-08-10 15:22:34.000000000 -0400
@@ -583,7 +583,7 @@ static struct scatterlist *scsi_sg_alloc
 
 static void scsi_free_sgtable(struct scsi_data_buffer *sdb, bool mq)
 {
-	if (mq && sdb->table.nents <= SCSI_MAX_SG_SEGMENTS)
+	if (mq && sdb->table.orig_nents <= SCSI_MAX_SG_SEGMENTS)
 		return;
 	__sg_free_table(&sdb->table, SCSI_MAX_SG_SEGMENTS, mq, scsi_sg_free);
 }
@@ -597,8 +597,8 @@ static int scsi_alloc_sgtable(struct scs
 
 	if (mq) {
 		if (nents <= SCSI_MAX_SG_SEGMENTS) {
-			sdb->table.nents = nents;
-			sg_init_table(sdb->table.sgl, sdb->table.nents);
+			sdb->table.nents = sdb->table.orig_nents = nents;
+			sg_init_table(sdb->table.sgl, nents);
 			return 0;
 		}
 		first_chunk = sdb->table.sgl;
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/scsi/scsi_sysfs.c linux-libre-4.1.5-gnu/drivers/scsi/scsi_sysfs.c
--- linux-libre-4.1.4-gnu/drivers/scsi/scsi_sysfs.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/scsi/scsi_sysfs.c	2015-08-10 15:22:34.000000000 -0400
@@ -859,7 +859,7 @@ sdev_store_queue_depth(struct device *de
 
 	depth = simple_strtoul(buf, NULL, 0);
 
-	if (depth < 1 || depth > sht->can_queue)
+	if (depth < 1 || depth > sdev->host->can_queue)
 		return -EINVAL;
 
 	retval = sht->change_queue_depth(sdev, depth);
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/scsi/st.c linux-libre-4.1.5-gnu/drivers/scsi/st.c
--- linux-libre-4.1.4-gnu/drivers/scsi/st.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/scsi/st.c	2015-08-10 15:22:34.000000000 -0400
@@ -1274,9 +1274,9 @@ static int st_open(struct inode *inode,
 	spin_lock(&st_use_lock);
 	STp->in_use = 0;
 	spin_unlock(&st_use_lock);
-	scsi_tape_put(STp);
 	if (resumed)
 		scsi_autopm_put_device(STp->device);
+	scsi_tape_put(STp);
 	return retval;
 
 }
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/spi/spi-img-spfi.c linux-libre-4.1.5-gnu/drivers/spi/spi-img-spfi.c
--- linux-libre-4.1.4-gnu/drivers/spi/spi-img-spfi.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/spi/spi-img-spfi.c	2015-08-10 15:22:34.000000000 -0400
@@ -40,6 +40,7 @@
 #define SPFI_CONTROL_SOFT_RESET			BIT(11)
 #define SPFI_CONTROL_SEND_DMA			BIT(10)
 #define SPFI_CONTROL_GET_DMA			BIT(9)
+#define SPFI_CONTROL_SE			BIT(8)
 #define SPFI_CONTROL_TMODE_SHIFT		5
 #define SPFI_CONTROL_TMODE_MASK			0x7
 #define SPFI_CONTROL_TMODE_SINGLE		0
@@ -491,6 +492,7 @@ static void img_spfi_config(struct spi_m
 	else if (xfer->tx_nbits == SPI_NBITS_QUAD &&
 		 xfer->rx_nbits == SPI_NBITS_QUAD)
 		val |= SPFI_CONTROL_TMODE_QUAD << SPFI_CONTROL_TMODE_SHIFT;
+	val |= SPFI_CONTROL_SE;
 	spfi_writel(spfi, val, SPFI_CONTROL);
 }
 
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/spi/spi-imx.c linux-libre-4.1.5-gnu/drivers/spi/spi-imx.c
--- linux-libre-4.1.4-gnu/drivers/spi/spi-imx.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/spi/spi-imx.c	2015-08-10 15:22:34.000000000 -0400
@@ -201,8 +201,9 @@ static bool spi_imx_can_dma(struct spi_m
 {
 	struct spi_imx_data *spi_imx = spi_master_get_devdata(master);
 
-	if (spi_imx->dma_is_inited && (transfer->len > spi_imx->rx_wml)
-	    && (transfer->len > spi_imx->tx_wml))
+	if (spi_imx->dma_is_inited
+	    && transfer->len > spi_imx->rx_wml * sizeof(u32)
+	    && transfer->len > spi_imx->tx_wml * sizeof(u32))
 		return true;
 	return false;
 }
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/target/iscsi/iscsi_target.c linux-libre-4.1.5-gnu/drivers/target/iscsi/iscsi_target.c
--- linux-libre-4.1.4-gnu/drivers/target/iscsi/iscsi_target.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/target/iscsi/iscsi_target.c	2015-08-10 15:22:34.000000000 -0400
@@ -4001,7 +4001,13 @@ get_immediate:
 	}
 
 transport_err:
-	iscsit_take_action_for_connection_exit(conn);
+	/*
+	 * Avoid the normal connection failure code-path if this connection
+	 * is still within LOGIN mode, and iscsi_np process context is
+	 * responsible for cleaning up the early connection failure.
+	 */
+	if (conn->conn_state != TARG_CONN_STATE_IN_LOGIN)
+		iscsit_take_action_for_connection_exit(conn);
 out:
 	return 0;
 }
@@ -4093,7 +4099,7 @@ reject:
 
 int iscsi_target_rx_thread(void *arg)
 {
-	int ret;
+	int ret, rc;
 	u8 buffer[ISCSI_HDR_LEN], opcode;
 	u32 checksum = 0, digest = 0;
 	struct iscsi_conn *conn = arg;
@@ -4103,10 +4109,16 @@ int iscsi_target_rx_thread(void *arg)
 	 * connection recovery / failure event can be triggered externally.
 	 */
 	allow_signal(SIGINT);
+	/*
+	 * Wait for iscsi_post_login_handler() to complete before allowing
+	 * incoming iscsi/tcp socket I/O, and/or failing the connection.
+	 */
+	rc = wait_for_completion_interruptible(&conn->rx_login_comp);
+	if (rc < 0)
+		return 0;
 
 	if (conn->conn_transport->transport_type == ISCSI_INFINIBAND) {
 		struct completion comp;
-		int rc;
 
 		init_completion(&comp);
 		rc = wait_for_completion_interruptible(&comp);
@@ -4543,7 +4555,18 @@ static void iscsit_logout_post_handler_c
 	struct iscsi_conn *conn)
 {
 	struct iscsi_session *sess = conn->sess;
-	int sleep = cmpxchg(&conn->tx_thread_active, true, false);
+	int sleep = 1;
+	/*
+	 * Traditional iscsi/tcp will invoke this logic from TX thread
+	 * context during session logout, so clear tx_thread_active and
+	 * sleep if iscsit_close_connection() has not already occured.
+	 *
+	 * Since iser-target invokes this logic from it's own workqueue,
+	 * always sleep waiting for RX/TX thread shutdown to complete
+	 * within iscsit_close_connection().
+	 */
+	if (conn->conn_transport->transport_type == ISCSI_TCP)
+		sleep = cmpxchg(&conn->tx_thread_active, true, false);
 
 	atomic_set(&conn->conn_logout_remove, 0);
 	complete(&conn->conn_logout_comp);
@@ -4557,7 +4580,10 @@ static void iscsit_logout_post_handler_c
 static void iscsit_logout_post_handler_samecid(
 	struct iscsi_conn *conn)
 {
-	int sleep = cmpxchg(&conn->tx_thread_active, true, false);
+	int sleep = 1;
+
+	if (conn->conn_transport->transport_type == ISCSI_TCP)
+		sleep = cmpxchg(&conn->tx_thread_active, true, false);
 
 	atomic_set(&conn->conn_logout_remove, 0);
 	complete(&conn->conn_logout_comp);
@@ -4776,6 +4802,7 @@ int iscsit_release_sessions_for_tpg(stru
 	struct iscsi_session *sess;
 	struct se_portal_group *se_tpg = &tpg->tpg_se_tpg;
 	struct se_session *se_sess, *se_sess_tmp;
+	LIST_HEAD(free_list);
 	int session_count = 0;
 
 	spin_lock_bh(&se_tpg->session_lock);
@@ -4797,14 +4824,17 @@ int iscsit_release_sessions_for_tpg(stru
 		}
 		atomic_set(&sess->session_reinstatement, 1);
 		spin_unlock(&sess->conn_lock);
-		spin_unlock_bh(&se_tpg->session_lock);
 
-		iscsit_free_session(sess);
-		spin_lock_bh(&se_tpg->session_lock);
+		list_move_tail(&se_sess->sess_list, &free_list);
+	}
+	spin_unlock_bh(&se_tpg->session_lock);
+
+	list_for_each_entry_safe(se_sess, se_sess_tmp, &free_list, sess_list) {
+		sess = (struct iscsi_session *)se_sess->fabric_sess_ptr;
 
+		iscsit_free_session(sess);
 		session_count++;
 	}
-	spin_unlock_bh(&se_tpg->session_lock);
 
 	pr_debug("Released %d iSCSI Session(s) from Target Portal"
 			" Group: %hu\n", session_count, tpg->tpgt);
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/target/iscsi/iscsi_target_login.c linux-libre-4.1.5-gnu/drivers/target/iscsi/iscsi_target_login.c
--- linux-libre-4.1.4-gnu/drivers/target/iscsi/iscsi_target_login.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/target/iscsi/iscsi_target_login.c	2015-08-10 15:22:34.000000000 -0400
@@ -82,6 +82,7 @@ static struct iscsi_login *iscsi_login_i
 	init_completion(&conn->conn_logout_comp);
 	init_completion(&conn->rx_half_close_comp);
 	init_completion(&conn->tx_half_close_comp);
+	init_completion(&conn->rx_login_comp);
 	spin_lock_init(&conn->cmd_lock);
 	spin_lock_init(&conn->conn_usage_lock);
 	spin_lock_init(&conn->immed_queue_lock);
@@ -699,7 +700,7 @@ static void iscsi_post_login_start_timer
 		iscsit_start_nopin_timer(conn);
 }
 
-static int iscsit_start_kthreads(struct iscsi_conn *conn)
+int iscsit_start_kthreads(struct iscsi_conn *conn)
 {
 	int ret = 0;
 
@@ -734,6 +735,7 @@ static int iscsit_start_kthreads(struct
 
 	return 0;
 out_tx:
+	send_sig(SIGINT, conn->tx_thread, 1);
 	kthread_stop(conn->tx_thread);
 	conn->tx_thread_active = false;
 out_bitmap:
@@ -744,7 +746,7 @@ out_bitmap:
 	return ret;
 }
 
-int iscsi_post_login_handler(
+void iscsi_post_login_handler(
 	struct iscsi_np *np,
 	struct iscsi_conn *conn,
 	u8 zero_tsih)
@@ -754,7 +756,6 @@ int iscsi_post_login_handler(
 	struct se_session *se_sess = sess->se_sess;
 	struct iscsi_portal_group *tpg = sess->tpg;
 	struct se_portal_group *se_tpg = &tpg->tpg_se_tpg;
-	int rc;
 
 	iscsit_inc_conn_usage_count(conn);
 
@@ -795,10 +796,6 @@ int iscsi_post_login_handler(
 			sess->sess_ops->InitiatorName);
 		spin_unlock_bh(&sess->conn_lock);
 
-		rc = iscsit_start_kthreads(conn);
-		if (rc)
-			return rc;
-
 		iscsi_post_login_start_timers(conn);
 		/*
 		 * Determine CPU mask to ensure connection's RX and TX kthreads
@@ -807,15 +804,20 @@ int iscsi_post_login_handler(
 		iscsit_thread_get_cpumask(conn);
 		conn->conn_rx_reset_cpumask = 1;
 		conn->conn_tx_reset_cpumask = 1;
-
+		/*
+		 * Wakeup the sleeping iscsi_target_rx_thread() now that
+		 * iscsi_conn is in TARG_CONN_STATE_LOGGED_IN state.
+		 */
+		complete(&conn->rx_login_comp);
 		iscsit_dec_conn_usage_count(conn);
+
 		if (stop_timer) {
 			spin_lock_bh(&se_tpg->session_lock);
 			iscsit_stop_time2retain_timer(sess);
 			spin_unlock_bh(&se_tpg->session_lock);
 		}
 		iscsit_dec_session_usage_count(sess);
-		return 0;
+		return;
 	}
 
 	iscsi_set_session_parameters(sess->sess_ops, conn->param_list, 1);
@@ -856,10 +858,6 @@ int iscsi_post_login_handler(
 		" iSCSI Target Portal Group: %hu\n", tpg->nsessions, tpg->tpgt);
 	spin_unlock_bh(&se_tpg->session_lock);
 
-	rc = iscsit_start_kthreads(conn);
-	if (rc)
-		return rc;
-
 	iscsi_post_login_start_timers(conn);
 	/*
 	 * Determine CPU mask to ensure connection's RX and TX kthreads
@@ -868,10 +866,12 @@ int iscsi_post_login_handler(
 	iscsit_thread_get_cpumask(conn);
 	conn->conn_rx_reset_cpumask = 1;
 	conn->conn_tx_reset_cpumask = 1;
-
+	/*
+	 * Wakeup the sleeping iscsi_target_rx_thread() now that
+	 * iscsi_conn is in TARG_CONN_STATE_LOGGED_IN state.
+	 */
+	complete(&conn->rx_login_comp);
 	iscsit_dec_conn_usage_count(conn);
-
-	return 0;
 }
 
 static void iscsi_handle_login_thread_timeout(unsigned long data)
@@ -1436,23 +1436,12 @@ static int __iscsi_target_login_thread(s
 	if (ret < 0)
 		goto new_sess_out;
 
-	if (!conn->sess) {
-		pr_err("struct iscsi_conn session pointer is NULL!\n");
-		goto new_sess_out;
-	}
-
 	iscsi_stop_login_thread_timer(np);
 
-	if (signal_pending(current))
-		goto new_sess_out;
-
 	if (ret == 1) {
 		tpg_np = conn->tpg_np;
 
-		ret = iscsi_post_login_handler(np, conn, zero_tsih);
-		if (ret < 0)
-			goto new_sess_out;
-
+		iscsi_post_login_handler(np, conn, zero_tsih);
 		iscsit_deaccess_np(np, tpg, tpg_np);
 	}
 
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/target/iscsi/iscsi_target_login.h linux-libre-4.1.5-gnu/drivers/target/iscsi/iscsi_target_login.h
--- linux-libre-4.1.4-gnu/drivers/target/iscsi/iscsi_target_login.h	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/target/iscsi/iscsi_target_login.h	2015-08-10 15:22:34.000000000 -0400
@@ -12,7 +12,8 @@ extern int iscsit_accept_np(struct iscsi
 extern int iscsit_get_login_rx(struct iscsi_conn *, struct iscsi_login *);
 extern int iscsit_put_login_tx(struct iscsi_conn *, struct iscsi_login *, u32);
 extern void iscsit_free_conn(struct iscsi_np *, struct iscsi_conn *);
-extern int iscsi_post_login_handler(struct iscsi_np *, struct iscsi_conn *, u8);
+extern int iscsit_start_kthreads(struct iscsi_conn *);
+extern void iscsi_post_login_handler(struct iscsi_np *, struct iscsi_conn *, u8);
 extern void iscsi_target_login_sess_out(struct iscsi_conn *, struct iscsi_np *,
 				bool, bool);
 extern int iscsi_target_login_thread(void *);
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/target/iscsi/iscsi_target_nego.c linux-libre-4.1.5-gnu/drivers/target/iscsi/iscsi_target_nego.c
--- linux-libre-4.1.4-gnu/drivers/target/iscsi/iscsi_target_nego.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/target/iscsi/iscsi_target_nego.c	2015-08-10 15:22:34.000000000 -0400
@@ -17,6 +17,7 @@
  ******************************************************************************/
 
 #include <linux/ctype.h>
+#include <linux/kthread.h>
 #include <scsi/iscsi_proto.h>
 #include <target/target_core_base.h>
 #include <target/target_core_fabric.h>
@@ -361,10 +362,24 @@ static int iscsi_target_do_tx_login_io(s
 		ntohl(login_rsp->statsn), login->rsp_length);
 
 	padding = ((-login->rsp_length) & 3);
+	/*
+	 * Before sending the last login response containing the transition
+	 * bit for full-feature-phase, go ahead and start up TX/RX threads
+	 * now to avoid potential resource allocation failures after the
+	 * final login response has been sent.
+	 */
+	if (login->login_complete) {
+		int rc = iscsit_start_kthreads(conn);
+		if (rc) {
+			iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR,
+					    ISCSI_LOGIN_STATUS_NO_RESOURCES);
+			return -1;
+		}
+	}
 
 	if (conn->conn_transport->iscsit_put_login_tx(conn, login,
 					login->rsp_length + padding) < 0)
-		return -1;
+		goto err;
 
 	login->rsp_length		= 0;
 	mutex_lock(&sess->cmdsn_mutex);
@@ -373,6 +388,23 @@ static int iscsi_target_do_tx_login_io(s
 	mutex_unlock(&sess->cmdsn_mutex);
 
 	return 0;
+
+err:
+	if (login->login_complete) {
+		if (conn->rx_thread && conn->rx_thread_active) {
+			send_sig(SIGINT, conn->rx_thread, 1);
+			kthread_stop(conn->rx_thread);
+		}
+		if (conn->tx_thread && conn->tx_thread_active) {
+			send_sig(SIGINT, conn->tx_thread, 1);
+			kthread_stop(conn->tx_thread);
+		}
+		spin_lock(&iscsit_global->ts_bitmap_lock);
+		bitmap_release_region(iscsit_global->ts_bitmap, conn->bitmap_id,
+				      get_order(1));
+		spin_unlock(&iscsit_global->ts_bitmap_lock);
+	}
+	return -1;
 }
 
 static void iscsi_target_sk_data_ready(struct sock *sk)
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/tty/n_tty.c linux-libre-4.1.5-gnu/drivers/tty/n_tty.c
--- linux-libre-4.1.4-gnu/drivers/tty/n_tty.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/tty/n_tty.c	2015-08-10 15:22:34.000000000 -0400
@@ -1108,19 +1108,29 @@ static void eraser(unsigned char c, stru
  *	Locking: ctrl_lock
  */
 
-static void isig(int sig, struct tty_struct *tty)
+static void __isig(int sig, struct tty_struct *tty)
 {
-	struct n_tty_data *ldata = tty->disc_data;
 	struct pid *tty_pgrp = tty_get_pgrp(tty);
 	if (tty_pgrp) {
 		kill_pgrp(tty_pgrp, sig, 1);
 		put_pid(tty_pgrp);
 	}
+}
 
-	if (!L_NOFLSH(tty)) {
+static void isig(int sig, struct tty_struct *tty)
+{
+	struct n_tty_data *ldata = tty->disc_data;
+
+	if (L_NOFLSH(tty)) {
+		/* signal only */
+		__isig(sig, tty);
+
+	} else { /* signal and flush */
 		up_read(&tty->termios_rwsem);
 		down_write(&tty->termios_rwsem);
 
+		__isig(sig, tty);
+
 		/* clear echo buffer */
 		mutex_lock(&ldata->output_lock);
 		ldata->echo_head = ldata->echo_tail = 0;
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/tty/serial/imx.c linux-libre-4.1.5-gnu/drivers/tty/serial/imx.c
--- linux-libre-4.1.4-gnu/drivers/tty/serial/imx.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/tty/serial/imx.c	2015-08-10 15:22:34.000000000 -0400
@@ -1132,11 +1132,6 @@ static int imx_startup(struct uart_port
 	while (!(readl(sport->port.membase + UCR2) & UCR2_SRST) && (--i > 0))
 		udelay(1);
 
-	/* Can we enable the DMA support? */
-	if (is_imx6q_uart(sport) && !uart_console(port) &&
-	    !sport->dma_is_inited)
-		imx_uart_dma_init(sport);
-
 	spin_lock_irqsave(&sport->port.lock, flags);
 
 	/*
@@ -1145,9 +1140,6 @@ static int imx_startup(struct uart_port
 	writel(USR1_RTSD, sport->port.membase + USR1);
 	writel(USR2_ORE, sport->port.membase + USR2);
 
-	if (sport->dma_is_inited && !sport->dma_is_enabled)
-		imx_enable_dma(sport);
-
 	temp = readl(sport->port.membase + UCR1);
 	temp |= UCR1_RRDYEN | UCR1_RTSDEN | UCR1_UARTEN;
 
@@ -1318,6 +1310,11 @@ imx_set_termios(struct uart_port *port,
 			} else {
 				ucr2 |= UCR2_CTSC;
 			}
+
+			/* Can we enable the DMA support? */
+			if (is_imx6q_uart(sport) && !uart_console(port)
+				&& !sport->dma_is_inited)
+				imx_uart_dma_init(sport);
 		} else {
 			termios->c_cflag &= ~CRTSCTS;
 		}
@@ -1434,6 +1431,8 @@ imx_set_termios(struct uart_port *port,
 	if (UART_ENABLE_MS(&sport->port, termios->c_cflag))
 		imx_enable_ms(&sport->port);
 
+	if (sport->dma_is_inited && !sport->dma_is_enabled)
+		imx_enable_dma(sport);
 	spin_unlock_irqrestore(&sport->port.lock, flags);
 }
 
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/tty/serial/serial_core.c linux-libre-4.1.5-gnu/drivers/tty/serial/serial_core.c
--- linux-libre-4.1.4-gnu/drivers/tty/serial/serial_core.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/tty/serial/serial_core.c	2015-08-10 15:22:34.000000000 -0400
@@ -1409,7 +1409,7 @@ static void uart_close(struct tty_struct
 	mutex_lock(&port->mutex);
 	uart_shutdown(tty, state);
 	tty_port_tty_set(port, NULL);
-	tty->closing = 0;
+
 	spin_lock_irqsave(&port->lock, flags);
 
 	if (port->blocked_open) {
@@ -1435,6 +1435,7 @@ static void uart_close(struct tty_struct
 	mutex_unlock(&port->mutex);
 
 	tty_ldisc_flush(tty);
+	tty->closing = 0;
 }
 
 static void uart_wait_until_sent(struct tty_struct *tty, int timeout)
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/usb/host/xhci.c linux-libre-4.1.5-gnu/drivers/usb/host/xhci.c
--- linux-libre-4.1.4-gnu/drivers/usb/host/xhci.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/usb/host/xhci.c	2015-08-10 15:22:34.000000000 -0400
@@ -3453,6 +3453,9 @@ int xhci_discover_or_reset_device(struct
 			return -EINVAL;
 	}
 
+	if (virt_dev->tt_info)
+		old_active_eps = virt_dev->tt_info->active_eps;
+
 	if (virt_dev->udev != udev) {
 		/* If the virt_dev and the udev does not match, this virt_dev
 		 * may belong to another udev.
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/usb/host/xhci.h linux-libre-4.1.5-gnu/drivers/usb/host/xhci.h
--- linux-libre-4.1.4-gnu/drivers/usb/host/xhci.h	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/usb/host/xhci.h	2015-08-10 15:22:34.000000000 -0400
@@ -285,6 +285,7 @@ struct xhci_op_regs {
 #define XDEV_U0		(0x0 << 5)
 #define XDEV_U2		(0x2 << 5)
 #define XDEV_U3		(0x3 << 5)
+#define XDEV_INACTIVE	(0x6 << 5)
 #define XDEV_RESUME	(0xf << 5)
 /* true: port has power (see HCC_PPC) */
 #define PORT_POWER	(1 << 9)
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/usb/host/xhci-hub.c linux-libre-4.1.5-gnu/drivers/usb/host/xhci-hub.c
--- linux-libre-4.1.4-gnu/drivers/usb/host/xhci-hub.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/usb/host/xhci-hub.c	2015-08-10 15:22:34.000000000 -0400
@@ -484,10 +484,13 @@ static void xhci_hub_report_usb3_link_st
 	u32 pls = status_reg & PORT_PLS_MASK;
 
 	/* resume state is a xHCI internal state.
-	 * Do not report it to usb core.
+	 * Do not report it to usb core, instead, pretend to be U3,
+	 * thus usb core knows it's not ready for transfer
 	 */
-	if (pls == XDEV_RESUME)
+	if (pls == XDEV_RESUME) {
+		*status |= USB_SS_PORT_LS_U3;
 		return;
+	}
 
 	/* When the CAS bit is set then warm reset
 	 * should be performed on port
@@ -588,7 +591,14 @@ static u32 xhci_get_port_status(struct u
 		status |= USB_PORT_STAT_C_RESET << 16;
 	/* USB3.0 only */
 	if (hcd->speed == HCD_USB3) {
-		if ((raw_port_status & PORT_PLC))
+		/* Port link change with port in resume state should not be
+		 * reported to usbcore, as this is an internal state to be
+		 * handled by xhci driver. Reporting PLC to usbcore may
+		 * cause usbcore clearing PLC first and port change event
+		 * irq won't be generated.
+		 */
+		if ((raw_port_status & PORT_PLC) &&
+			(raw_port_status & PORT_PLS_MASK) != XDEV_RESUME)
 			status |= USB_PORT_STAT_C_LINK_STATE << 16;
 		if ((raw_port_status & PORT_WRC))
 			status |= USB_PORT_STAT_C_BH_RESET << 16;
@@ -1120,10 +1130,10 @@ int xhci_bus_suspend(struct usb_hcd *hcd
 	spin_lock_irqsave(&xhci->lock, flags);
 
 	if (hcd->self.root_hub->do_remote_wakeup) {
-		if (bus_state->resuming_ports) {
+		if (bus_state->resuming_ports ||	/* USB2 */
+		    bus_state->port_remote_wakeup) {	/* USB3 */
 			spin_unlock_irqrestore(&xhci->lock, flags);
-			xhci_dbg(xhci, "suspend failed because "
-						"a port is resuming\n");
+			xhci_dbg(xhci, "suspend failed because a port is resuming\n");
 			return -EBUSY;
 		}
 	}
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/usb/host/xhci-ring.c linux-libre-4.1.5-gnu/drivers/usb/host/xhci-ring.c
--- linux-libre-4.1.4-gnu/drivers/usb/host/xhci-ring.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/usb/host/xhci-ring.c	2015-08-10 15:22:34.000000000 -0400
@@ -1546,6 +1546,9 @@ static void handle_port_status(struct xh
 		usb_hcd_resume_root_hub(hcd);
 	}
 
+	if (hcd->speed == HCD_USB3 && (temp & PORT_PLS_MASK) == XDEV_INACTIVE)
+		bus_state->port_remote_wakeup &= ~(1 << faked_port_index);
+
 	if ((temp & PORT_PLC) && (temp & PORT_PLS_MASK) == XDEV_RESUME) {
 		xhci_dbg(xhci, "port resume event for port %d\n", port_id);
 
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/usb/storage/unusual_devs.h linux-libre-4.1.5-gnu/drivers/usb/storage/unusual_devs.h
--- linux-libre-4.1.4-gnu/drivers/usb/storage/unusual_devs.h	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/usb/storage/unusual_devs.h	2015-08-10 15:22:34.000000000 -0400
@@ -2065,6 +2065,18 @@ UNUSUAL_DEV( 0x1908, 0x3335, 0x0200, 0x0
 		USB_SC_DEVICE, USB_PR_DEVICE, NULL,
 		US_FL_NO_READ_DISC_INFO ),
 
+/* Reported by Oliver Neukum <oneukum@suse.com>
+ * This device morphes spontaneously into another device if the access
+ * pattern of Windows isn't followed. Thus writable media would be dirty
+ * if the initial instance is used. So the device is limited to its
+ * virtual CD.
+ * And yes, the concept that BCD goes up to 9 is not heeded */
+UNUSUAL_DEV( 0x19d2, 0x1225, 0x0000, 0xffff,
+		"ZTE,Incorporated",
+		"ZTE WCDMA Technologies MSM",
+		USB_SC_DEVICE, USB_PR_DEVICE, NULL,
+		US_FL_SINGLE_LUN ),
+
 /* Reported by Sven Geggus <sven-usbst@geggus.net>
  * This encrypted pen drive returns bogus data for the initial READ(10).
  */
diff -druNp --no-dereference linux-libre-4.1.4-gnu/drivers/vhost/vhost.c linux-libre-4.1.5-gnu/drivers/vhost/vhost.c
--- linux-libre-4.1.4-gnu/drivers/vhost/vhost.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/drivers/vhost/vhost.c	2015-08-10 15:22:34.000000000 -0400
@@ -886,6 +886,7 @@ long vhost_dev_ioctl(struct vhost_dev *d
 		}
 		if (eventfp != d->log_file) {
 			filep = d->log_file;
+			d->log_file = eventfp;
 			ctx = d->log_ctx;
 			d->log_ctx = eventfp ?
 				eventfd_ctx_fileget(eventfp) : NULL;
diff -druNp --no-dereference linux-libre-4.1.4-gnu/fs/dcache.c linux-libre-4.1.5-gnu/fs/dcache.c
--- linux-libre-4.1.4-gnu/fs/dcache.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/fs/dcache.c	2015-08-10 15:22:34.000000000 -0400
@@ -642,7 +642,7 @@ static inline bool fast_dput(struct dent
 
 	/*
 	 * If we have a d_op->d_delete() operation, we sould not
-	 * let the dentry count go to zero, so use "put__or_lock".
+	 * let the dentry count go to zero, so use "put_or_lock".
 	 */
 	if (unlikely(dentry->d_flags & DCACHE_OP_DELETE))
 		return lockref_put_or_lock(&dentry->d_lockref);
@@ -697,7 +697,7 @@ static inline bool fast_dput(struct dent
 	 */
 	smp_rmb();
 	d_flags = ACCESS_ONCE(dentry->d_flags);
-	d_flags &= DCACHE_REFERENCED | DCACHE_LRU_LIST;
+	d_flags &= DCACHE_REFERENCED | DCACHE_LRU_LIST | DCACHE_DISCONNECTED;
 
 	/* Nothing to do? Dropping the reference was all we needed? */
 	if (d_flags == (DCACHE_REFERENCED | DCACHE_LRU_LIST) && !d_unhashed(dentry))
@@ -776,6 +776,9 @@ repeat:
 	if (unlikely(d_unhashed(dentry)))
 		goto kill_it;
 
+	if (unlikely(dentry->d_flags & DCACHE_DISCONNECTED))
+		goto kill_it;
+
 	if (unlikely(dentry->d_flags & DCACHE_OP_DELETE)) {
 		if (dentry->d_op->d_delete(dentry))
 			goto kill_it;
diff -druNp --no-dereference linux-libre-4.1.4-gnu/fs/namespace.c linux-libre-4.1.5-gnu/fs/namespace.c
--- linux-libre-4.1.4-gnu/fs/namespace.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/fs/namespace.c	2015-08-10 15:22:34.000000000 -0400
@@ -1350,6 +1350,36 @@ enum umount_tree_flags {
 	UMOUNT_PROPAGATE = 2,
 	UMOUNT_CONNECTED = 4,
 };
+
+static bool disconnect_mount(struct mount *mnt, enum umount_tree_flags how)
+{
+	/* Leaving mounts connected is only valid for lazy umounts */
+	if (how & UMOUNT_SYNC)
+		return true;
+
+	/* A mount without a parent has nothing to be connected to */
+	if (!mnt_has_parent(mnt))
+		return true;
+
+	/* Because the reference counting rules change when mounts are
+	 * unmounted and connected, umounted mounts may not be
+	 * connected to mounted mounts.
+	 */
+	if (!(mnt->mnt_parent->mnt.mnt_flags & MNT_UMOUNT))
+		return true;
+
+	/* Has it been requested that the mount remain connected? */
+	if (how & UMOUNT_CONNECTED)
+		return false;
+
+	/* Is the mount locked such that it needs to remain connected? */
+	if (IS_MNT_LOCKED(mnt))
+		return false;
+
+	/* By default disconnect the mount */
+	return true;
+}
+
 /*
  * mount_lock must be held
  * namespace_sem must be held for write
@@ -1387,10 +1417,7 @@ static void umount_tree(struct mount *mn
 		if (how & UMOUNT_SYNC)
 			p->mnt.mnt_flags |= MNT_SYNC_UMOUNT;
 
-		disconnect = !(((how & UMOUNT_CONNECTED) &&
-				mnt_has_parent(p) &&
-				(p->mnt_parent->mnt.mnt_flags & MNT_UMOUNT)) ||
-			       IS_MNT_LOCKED_AND_LAZY(p));
+		disconnect = disconnect_mount(p, how);
 
 		pin_insert_group(&p->mnt_umount, &p->mnt_parent->mnt,
 				 disconnect ? &unmounted : NULL);
@@ -1527,11 +1554,8 @@ void __detach_mounts(struct dentry *dent
 	while (!hlist_empty(&mp->m_list)) {
 		mnt = hlist_entry(mp->m_list.first, struct mount, mnt_mp_list);
 		if (mnt->mnt.mnt_flags & MNT_UMOUNT) {
-			struct mount *p, *tmp;
-			list_for_each_entry_safe(p, tmp, &mnt->mnt_mounts,  mnt_child) {
-				hlist_add_head(&p->mnt_umount.s_list, &unmounted);
-				umount_mnt(p);
-			}
+			hlist_add_head(&mnt->mnt_umount.s_list, &unmounted);
+			umount_mnt(mnt);
 		}
 		else umount_tree(mnt, UMOUNT_CONNECTED);
 	}
diff -druNp --no-dereference linux-libre-4.1.4-gnu/fs/nfs/inode.c linux-libre-4.1.5-gnu/fs/nfs/inode.c
--- linux-libre-4.1.4-gnu/fs/nfs/inode.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/fs/nfs/inode.c	2015-08-10 15:22:34.000000000 -0400
@@ -1242,9 +1242,11 @@ static int nfs_check_inode_attributes(st
 	if (fattr->valid & NFS_ATTR_FATTR_SIZE) {
 		cur_size = i_size_read(inode);
 		new_isize = nfs_size_to_loff_t(fattr->size);
-		if (cur_size != new_isize && nfsi->nrequests == 0)
+		if (cur_size != new_isize)
 			invalid |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
 	}
+	if (nfsi->nrequests != 0)
+		invalid &= ~NFS_INO_REVAL_PAGECACHE;
 
 	/* Have any file permissions changed? */
 	if ((fattr->valid & NFS_ATTR_FATTR_MODE) && (inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO))
@@ -1682,8 +1684,7 @@ static int nfs_update_inode(struct inode
 			invalid |= NFS_INO_INVALID_ATTR
 				| NFS_INO_INVALID_DATA
 				| NFS_INO_INVALID_ACCESS
-				| NFS_INO_INVALID_ACL
-				| NFS_INO_REVAL_PAGECACHE;
+				| NFS_INO_INVALID_ACL;
 			if (S_ISDIR(inode->i_mode))
 				nfs_force_lookup_revalidate(inode);
 			inode->i_version = fattr->change_attr;
@@ -1715,7 +1716,6 @@ static int nfs_update_inode(struct inode
 			if ((nfsi->nrequests == 0) || new_isize > cur_isize) {
 				i_size_write(inode, new_isize);
 				invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA;
-				invalid &= ~NFS_INO_REVAL_PAGECACHE;
 			}
 			dprintk("NFS: isize change on server for file %s/%ld "
 					"(%Ld to %Ld)\n",
diff -druNp --no-dereference linux-libre-4.1.4-gnu/fs/nfs/nfs4proc.c linux-libre-4.1.5-gnu/fs/nfs/nfs4proc.c
--- linux-libre-4.1.4-gnu/fs/nfs/nfs4proc.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/fs/nfs/nfs4proc.c	2015-08-10 15:22:34.000000000 -0400
@@ -1204,12 +1204,15 @@ static bool nfs_need_update_open_stateid
 
 static void nfs_resync_open_stateid_locked(struct nfs4_state *state)
 {
+	if (!(state->n_wronly || state->n_rdonly || state->n_rdwr))
+		return;
 	if (state->n_wronly)
 		set_bit(NFS_O_WRONLY_STATE, &state->flags);
 	if (state->n_rdonly)
 		set_bit(NFS_O_RDONLY_STATE, &state->flags);
 	if (state->n_rdwr)
 		set_bit(NFS_O_RDWR_STATE, &state->flags);
+	set_bit(NFS_OPEN_STATE, &state->flags);
 }
 
 static void nfs_clear_open_stateid_locked(struct nfs4_state *state,
diff -druNp --no-dereference linux-libre-4.1.4-gnu/fs/nfs/pagelist.c linux-libre-4.1.5-gnu/fs/nfs/pagelist.c
--- linux-libre-4.1.4-gnu/fs/nfs/pagelist.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/fs/nfs/pagelist.c	2015-08-10 15:22:34.000000000 -0400
@@ -1110,8 +1110,11 @@ static int nfs_do_recoalesce(struct nfs_
 			nfs_list_remove_request(req);
 			if (__nfs_pageio_add_request(desc, req))
 				continue;
-			if (desc->pg_error < 0)
+			if (desc->pg_error < 0) {
+				list_splice_tail(&head, &mirror->pg_list);
+				mirror->pg_recoalesce = 1;
 				return 0;
+			}
 			break;
 		}
 	} while (mirror->pg_recoalesce);
diff -druNp --no-dereference linux-libre-4.1.4-gnu/fs/pnode.h linux-libre-4.1.5-gnu/fs/pnode.h
--- linux-libre-4.1.4-gnu/fs/pnode.h	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/fs/pnode.h	2015-08-10 15:22:34.000000000 -0400
@@ -20,8 +20,6 @@
 #define SET_MNT_MARK(m) ((m)->mnt.mnt_flags |= MNT_MARKED)
 #define CLEAR_MNT_MARK(m) ((m)->mnt.mnt_flags &= ~MNT_MARKED)
 #define IS_MNT_LOCKED(m) ((m)->mnt.mnt_flags & MNT_LOCKED)
-#define IS_MNT_LOCKED_AND_LAZY(m) \
-	(((m)->mnt.mnt_flags & (MNT_LOCKED|MNT_SYNC_UMOUNT)) == MNT_LOCKED)
 
 #define CL_EXPIRE    		0x01
 #define CL_SLAVE     		0x02
diff -druNp --no-dereference linux-libre-4.1.4-gnu/fs/xfs/libxfs/xfs_attr_remote.c linux-libre-4.1.5-gnu/fs/xfs/libxfs/xfs_attr_remote.c
--- linux-libre-4.1.4-gnu/fs/xfs/libxfs/xfs_attr_remote.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/fs/xfs/libxfs/xfs_attr_remote.c	2015-08-10 15:22:34.000000000 -0400
@@ -159,11 +159,10 @@ xfs_attr3_rmt_write_verify(
 	struct xfs_buf	*bp)
 {
 	struct xfs_mount *mp = bp->b_target->bt_mount;
-	struct xfs_buf_log_item	*bip = bp->b_fspriv;
+	int		blksize = mp->m_attr_geo->blksize;
 	char		*ptr;
 	int		len;
 	xfs_daddr_t	bno;
-	int		blksize = mp->m_attr_geo->blksize;
 
 	/* no verification of non-crc buffers */
 	if (!xfs_sb_version_hascrc(&mp->m_sb))
@@ -175,16 +174,22 @@ xfs_attr3_rmt_write_verify(
 	ASSERT(len >= blksize);
 
 	while (len > 0) {
+		struct xfs_attr3_rmt_hdr *rmt = (struct xfs_attr3_rmt_hdr *)ptr;
+
 		if (!xfs_attr3_rmt_verify(mp, ptr, blksize, bno)) {
 			xfs_buf_ioerror(bp, -EFSCORRUPTED);
 			xfs_verifier_error(bp);
 			return;
 		}
-		if (bip) {
-			struct xfs_attr3_rmt_hdr *rmt;
 
-			rmt = (struct xfs_attr3_rmt_hdr *)ptr;
-			rmt->rm_lsn = cpu_to_be64(bip->bli_item.li_lsn);
+		/*
+		 * Ensure we aren't writing bogus LSNs to disk. See
+		 * xfs_attr3_rmt_hdr_set() for the explanation.
+		 */
+		if (rmt->rm_lsn != cpu_to_be64(NULLCOMMITLSN)) {
+			xfs_buf_ioerror(bp, -EFSCORRUPTED);
+			xfs_verifier_error(bp);
+			return;
 		}
 		xfs_update_cksum(ptr, blksize, XFS_ATTR3_RMT_CRC_OFF);
 
@@ -221,6 +226,18 @@ xfs_attr3_rmt_hdr_set(
 	rmt->rm_owner = cpu_to_be64(ino);
 	rmt->rm_blkno = cpu_to_be64(bno);
 
+	/*
+	 * Remote attribute blocks are written synchronously, so we don't
+	 * have an LSN that we can stamp in them that makes any sense to log
+	 * recovery. To ensure that log recovery handles overwrites of these
+	 * blocks sanely (i.e. once they've been freed and reallocated as some
+	 * other type of metadata) we need to ensure that the LSN has a value
+	 * that tells log recovery to ignore the LSN and overwrite the buffer
+	 * with whatever is in it's log. To do this, we use the magic
+	 * NULLCOMMITLSN to indicate that the LSN is invalid.
+	 */
+	rmt->rm_lsn = cpu_to_be64(NULLCOMMITLSN);
+
 	return sizeof(struct xfs_attr3_rmt_hdr);
 }
 
@@ -434,14 +451,21 @@ xfs_attr_rmtval_set(
 
 		/*
 		 * Allocate a single extent, up to the size of the value.
+		 *
+		 * Note that we have to consider this a data allocation as we
+		 * write the remote attribute without logging the contents.
+		 * Hence we must ensure that we aren't using blocks that are on
+		 * the busy list so that we don't overwrite blocks which have
+		 * recently been freed but their transactions are not yet
+		 * committed to disk. If we overwrite the contents of a busy
+		 * extent and then crash then the block may not contain the
+		 * correct metadata after log recovery occurs.
 		 */
 		xfs_bmap_init(args->flist, args->firstblock);
 		nmap = 1;
 		error = xfs_bmapi_write(args->trans, dp, (xfs_fileoff_t)lblkno,
-				  blkcnt,
-				  XFS_BMAPI_ATTRFORK | XFS_BMAPI_METADATA,
-				  args->firstblock, args->total, &map, &nmap,
-				  args->flist);
+				  blkcnt, XFS_BMAPI_ATTRFORK, args->firstblock,
+				  args->total, &map, &nmap, args->flist);
 		if (!error) {
 			error = xfs_bmap_finish(&args->trans, args->flist,
 						&committed);
diff -druNp --no-dereference linux-libre-4.1.4-gnu/fs/xfs/xfs_log_recover.c linux-libre-4.1.5-gnu/fs/xfs/xfs_log_recover.c
--- linux-libre-4.1.4-gnu/fs/xfs/xfs_log_recover.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/fs/xfs/xfs_log_recover.c	2015-08-10 15:22:34.000000000 -0400
@@ -1887,9 +1887,14 @@ xlog_recover_get_buf_lsn(
 		uuid = &((struct xfs_dir3_blk_hdr *)blk)->uuid;
 		break;
 	case XFS_ATTR3_RMT_MAGIC:
-		lsn = be64_to_cpu(((struct xfs_attr3_rmt_hdr *)blk)->rm_lsn);
-		uuid = &((struct xfs_attr3_rmt_hdr *)blk)->rm_uuid;
-		break;
+		/*
+		 * Remote attr blocks are written synchronously, rather than
+		 * being logged. That means they do not contain a valid LSN
+		 * (i.e. transactionally ordered) in them, and hence any time we
+		 * see a buffer to replay over the top of a remote attribute
+		 * block we should simply do so.
+		 */
+		goto recover_immediately;
 	case XFS_SB_MAGIC:
 		lsn = be64_to_cpu(((struct xfs_dsb *)blk)->sb_lsn);
 		uuid = &((struct xfs_dsb *)blk)->sb_uuid;
diff -druNp --no-dereference linux-libre-4.1.4-gnu/include/linux/can/skb.h linux-libre-4.1.5-gnu/include/linux/can/skb.h
--- linux-libre-4.1.4-gnu/include/linux/can/skb.h	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/include/linux/can/skb.h	2015-08-10 15:22:34.000000000 -0400
@@ -27,10 +27,12 @@
 /**
  * struct can_skb_priv - private additional data inside CAN sk_buffs
  * @ifindex:	ifindex of the first interface the CAN frame appeared on
+ * @skbcnt:	atomic counter to have an unique id together with skb pointer
  * @cf:		align to the following CAN frame at skb->data
  */
 struct can_skb_priv {
 	int ifindex;
+	int skbcnt;
 	struct can_frame cf[0];
 };
 
diff -druNp --no-dereference linux-libre-4.1.4-gnu/include/linux/cper.h linux-libre-4.1.5-gnu/include/linux/cper.h
--- linux-libre-4.1.4-gnu/include/linux/cper.h	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/include/linux/cper.h	2015-08-10 15:22:34.000000000 -0400
@@ -340,7 +340,27 @@ struct cper_ia_proc_ctx {
 	__u64	mm_reg_addr;
 };
 
-/* Memory Error Section */
+/* Old Memory Error Section UEFI 2.1, 2.2 */
+struct cper_sec_mem_err_old {
+	__u64	validation_bits;
+	__u64	error_status;
+	__u64	physical_addr;
+	__u64	physical_addr_mask;
+	__u16	node;
+	__u16	card;
+	__u16	module;
+	__u16	bank;
+	__u16	device;
+	__u16	row;
+	__u16	column;
+	__u16	bit_pos;
+	__u64	requestor_id;
+	__u64	responder_id;
+	__u64	target_id;
+	__u8	error_type;
+};
+
+/* Memory Error Section UEFI >= 2.3 */
 struct cper_sec_mem_err {
 	__u64	validation_bits;
 	__u64	error_status;
diff -druNp --no-dereference linux-libre-4.1.4-gnu/include/linux/ftrace.h linux-libre-4.1.5-gnu/include/linux/ftrace.h
--- linux-libre-4.1.4-gnu/include/linux/ftrace.h	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/include/linux/ftrace.h	2015-08-10 15:22:34.000000000 -0400
@@ -116,6 +116,7 @@ ftrace_func_t ftrace_ops_get_func(struct
  *            SAVE_REGS. If another ops with this flag set is already registered
  *            for any of the functions that this ops will be registered for, then
  *            this ops will fail to register or set_filter_ip.
+ * PID     - Is affected by set_ftrace_pid (allows filtering on those pids)
  */
 enum {
 	FTRACE_OPS_FL_ENABLED			= 1 << 0,
@@ -132,6 +133,7 @@ enum {
 	FTRACE_OPS_FL_MODIFYING			= 1 << 11,
 	FTRACE_OPS_FL_ALLOC_TRAMP		= 1 << 12,
 	FTRACE_OPS_FL_IPMODIFY			= 1 << 13,
+	FTRACE_OPS_FL_PID			= 1 << 14,
 };
 
 #ifdef CONFIG_DYNAMIC_FTRACE
@@ -159,6 +161,7 @@ struct ftrace_ops {
 	struct ftrace_ops		*next;
 	unsigned long			flags;
 	void				*private;
+	ftrace_func_t			saved_func;
 	int __percpu			*disabled;
 #ifdef CONFIG_DYNAMIC_FTRACE
 	int				nr_trampolines;
diff -druNp --no-dereference linux-libre-4.1.4-gnu/include/target/iscsi/iscsi_target_core.h linux-libre-4.1.5-gnu/include/target/iscsi/iscsi_target_core.h
--- linux-libre-4.1.4-gnu/include/target/iscsi/iscsi_target_core.h	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/include/target/iscsi/iscsi_target_core.h	2015-08-10 15:22:34.000000000 -0400
@@ -606,6 +606,7 @@ struct iscsi_conn {
 	int			bitmap_id;
 	int			rx_thread_active;
 	struct task_struct	*rx_thread;
+	struct completion	rx_login_comp;
 	int			tx_thread_active;
 	struct task_struct	*tx_thread;
 	/* list_head for session connection list */
diff -druNp --no-dereference linux-libre-4.1.4-gnu/kernel/irq/resend.c linux-libre-4.1.5-gnu/kernel/irq/resend.c
--- linux-libre-4.1.4-gnu/kernel/irq/resend.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/kernel/irq/resend.c	2015-08-10 15:22:34.000000000 -0400
@@ -75,13 +75,21 @@ void check_irq_resend(struct irq_desc *d
 		    !desc->irq_data.chip->irq_retrigger(&desc->irq_data)) {
 #ifdef CONFIG_HARDIRQS_SW_RESEND
 			/*
-			 * If the interrupt has a parent irq and runs
-			 * in the thread context of the parent irq,
-			 * retrigger the parent.
+			 * If the interrupt is running in the thread
+			 * context of the parent irq we need to be
+			 * careful, because we cannot trigger it
+			 * directly.
 			 */
-			if (desc->parent_irq &&
-			    irq_settings_is_nested_thread(desc))
+			if (irq_settings_is_nested_thread(desc)) {
+				/*
+				 * If the parent_irq is valid, we
+				 * retrigger the parent, otherwise we
+				 * do nothing.
+				 */
+				if (!desc->parent_irq)
+					return;
 				irq = desc->parent_irq;
+			}
 			/* Set it pending and activate the softirq: */
 			set_bit(irq, irqs_resend);
 			tasklet_schedule(&resend_tasklet);
diff -druNp --no-dereference linux-libre-4.1.4-gnu/kernel/trace/ftrace.c linux-libre-4.1.5-gnu/kernel/trace/ftrace.c
--- linux-libre-4.1.4-gnu/kernel/trace/ftrace.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/kernel/trace/ftrace.c	2015-08-10 15:22:34.000000000 -0400
@@ -98,6 +98,13 @@ struct ftrace_pid {
 	struct pid *pid;
 };
 
+static bool ftrace_pids_enabled(void)
+{
+	return !list_empty(&ftrace_pids);
+}
+
+static void ftrace_update_trampoline(struct ftrace_ops *ops);
+
 /*
  * ftrace_disabled is set when an anomaly is discovered.
  * ftrace_disabled is much stronger than ftrace_enabled.
@@ -109,7 +116,6 @@ static DEFINE_MUTEX(ftrace_lock);
 static struct ftrace_ops *ftrace_control_list __read_mostly = &ftrace_list_end;
 static struct ftrace_ops *ftrace_ops_list __read_mostly = &ftrace_list_end;
 ftrace_func_t ftrace_trace_function __read_mostly = ftrace_stub;
-ftrace_func_t ftrace_pid_function __read_mostly = ftrace_stub;
 static struct ftrace_ops global_ops;
 static struct ftrace_ops control_ops;
 
@@ -183,14 +189,7 @@ static void ftrace_pid_func(unsigned lon
 	if (!test_tsk_trace_trace(current))
 		return;
 
-	ftrace_pid_function(ip, parent_ip, op, regs);
-}
-
-static void set_ftrace_pid_function(ftrace_func_t func)
-{
-	/* do not set ftrace_pid_function to itself! */
-	if (func != ftrace_pid_func)
-		ftrace_pid_function = func;
+	op->saved_func(ip, parent_ip, op, regs);
 }
 
 /**
@@ -202,7 +201,6 @@ static void set_ftrace_pid_function(ftra
 void clear_ftrace_function(void)
 {
 	ftrace_trace_function = ftrace_stub;
-	ftrace_pid_function = ftrace_stub;
 }
 
 static void control_ops_disable_all(struct ftrace_ops *ops)
@@ -436,6 +434,12 @@ static int __register_ftrace_function(st
 	} else
 		add_ftrace_ops(&ftrace_ops_list, ops);
 
+	/* Always save the function, and reset at unregistering */
+	ops->saved_func = ops->func;
+
+	if (ops->flags & FTRACE_OPS_FL_PID && ftrace_pids_enabled())
+		ops->func = ftrace_pid_func;
+
 	ftrace_update_trampoline(ops);
 
 	if (ftrace_enabled)
@@ -463,15 +467,28 @@ static int __unregister_ftrace_function(
 	if (ftrace_enabled)
 		update_ftrace_function();
 
+	ops->func = ops->saved_func;
+
 	return 0;
 }
 
 static void ftrace_update_pid_func(void)
 {
+	bool enabled = ftrace_pids_enabled();
+	struct ftrace_ops *op;
+
 	/* Only do something if we are tracing something */
 	if (ftrace_trace_function == ftrace_stub)
 		return;
 
+	do_for_each_ftrace_op(op, ftrace_ops_list) {
+		if (op->flags & FTRACE_OPS_FL_PID) {
+			op->func = enabled ? ftrace_pid_func :
+				op->saved_func;
+			ftrace_update_trampoline(op);
+		}
+	} while_for_each_ftrace_op(op);
+
 	update_ftrace_function();
 }
 
@@ -1133,7 +1150,8 @@ static struct ftrace_ops global_ops = {
 	.local_hash.filter_hash		= EMPTY_HASH,
 	INIT_OPS_HASH(global_ops)
 	.flags				= FTRACE_OPS_FL_RECURSION_SAFE |
-					  FTRACE_OPS_FL_INITIALIZED,
+					  FTRACE_OPS_FL_INITIALIZED |
+					  FTRACE_OPS_FL_PID,
 };
 
 /*
@@ -5023,7 +5041,9 @@ static void ftrace_update_trampoline(str
 
 static struct ftrace_ops global_ops = {
 	.func			= ftrace_stub,
-	.flags			= FTRACE_OPS_FL_RECURSION_SAFE | FTRACE_OPS_FL_INITIALIZED,
+	.flags			= FTRACE_OPS_FL_RECURSION_SAFE |
+				  FTRACE_OPS_FL_INITIALIZED |
+				  FTRACE_OPS_FL_PID,
 };
 
 static int __init ftrace_nodyn_init(void)
@@ -5080,11 +5100,6 @@ void ftrace_init_array_ops(struct trace_
 		if (WARN_ON(tr->ops->func != ftrace_stub))
 			printk("ftrace ops had %pS for function\n",
 			       tr->ops->func);
-		/* Only the top level instance does pid tracing */
-		if (!list_empty(&ftrace_pids)) {
-			set_ftrace_pid_function(func);
-			func = ftrace_pid_func;
-		}
 	}
 	tr->ops->func = func;
 	tr->ops->private = tr;
@@ -5371,7 +5386,7 @@ static void *fpid_start(struct seq_file
 {
 	mutex_lock(&ftrace_lock);
 
-	if (list_empty(&ftrace_pids) && (!*pos))
+	if (!ftrace_pids_enabled() && (!*pos))
 		return (void *) 1;
 
 	return seq_list_start(&ftrace_pids, *pos);
@@ -5610,6 +5625,7 @@ static struct ftrace_ops graph_ops = {
 	.func			= ftrace_stub,
 	.flags			= FTRACE_OPS_FL_RECURSION_SAFE |
 				   FTRACE_OPS_FL_INITIALIZED |
+				   FTRACE_OPS_FL_PID |
 				   FTRACE_OPS_FL_STUB,
 #ifdef FTRACE_GRAPH_TRAMP_ADDR
 	.trampoline		= FTRACE_GRAPH_TRAMP_ADDR,
diff -druNp --no-dereference linux-libre-4.1.4-gnu/lib/dma-debug.c linux-libre-4.1.5-gnu/lib/dma-debug.c
--- linux-libre-4.1.4-gnu/lib/dma-debug.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/lib/dma-debug.c	2015-08-10 15:22:34.000000000 -0400
@@ -574,6 +574,9 @@ void debug_dma_assert_idle(struct page *
 	unsigned long flags;
 	phys_addr_t cln;
 
+	if (dma_debug_disabled())
+		return;
+
 	if (!page)
 		return;
 
diff -druNp --no-dereference linux-libre-4.1.4-gnu/Makefile linux-libre-4.1.5-gnu/Makefile
--- linux-libre-4.1.4-gnu/Makefile	2015-08-03 15:37:59.000000000 -0400
+++ linux-libre-4.1.5-gnu/Makefile	2015-08-11 03:25:23.000000000 -0400
@@ -1,6 +1,6 @@
 VERSION = 4
 PATCHLEVEL = 1
-SUBLEVEL = 4
+SUBLEVEL = 5
 EXTRAVERSION = -gnu
 NAME = Series 4800
 
@@ -783,10 +783,11 @@ endif
 include scripts/Makefile.kasan
 include scripts/Makefile.extrawarn
 
-# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
-KBUILD_CPPFLAGS += $(KCPPFLAGS)
-KBUILD_AFLAGS += $(KAFLAGS)
-KBUILD_CFLAGS += $(KCFLAGS)
+# Add any arch overrides and user supplied CPPFLAGS, AFLAGS and CFLAGS as the
+# last assignments
+KBUILD_CPPFLAGS += $(ARCH_CPPFLAGS) $(KCPPFLAGS)
+KBUILD_AFLAGS   += $(ARCH_AFLAGS)   $(KAFLAGS)
+KBUILD_CFLAGS   += $(ARCH_CFLAGS)   $(KCFLAGS)
 
 # Use --build-id when available.
 LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\
diff -druNp --no-dereference linux-libre-4.1.4-gnu/net/can/af_can.c linux-libre-4.1.5-gnu/net/can/af_can.c
--- linux-libre-4.1.4-gnu/net/can/af_can.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/net/can/af_can.c	2015-08-10 15:22:34.000000000 -0400
@@ -89,6 +89,8 @@ struct timer_list can_stattimer;   /* ti
 struct s_stats    can_stats;       /* packet statistics */
 struct s_pstats   can_pstats;      /* receive list statistics */
 
+static atomic_t skbcounter = ATOMIC_INIT(0);
+
 /*
  * af_can socket functions
  */
@@ -310,12 +312,8 @@ int can_send(struct sk_buff *skb, int lo
 		return err;
 	}
 
-	if (newskb) {
-		if (!(newskb->tstamp.tv64))
-			__net_timestamp(newskb);
-
+	if (newskb)
 		netif_rx_ni(newskb);
-	}
 
 	/* update statistics */
 	can_stats.tx_frames++;
@@ -683,6 +681,10 @@ static void can_receive(struct sk_buff *
 	can_stats.rx_frames++;
 	can_stats.rx_frames_delta++;
 
+	/* create non-zero unique skb identifier together with *skb */
+	while (!(can_skb_prv(skb)->skbcnt))
+		can_skb_prv(skb)->skbcnt = atomic_inc_return(&skbcounter);
+
 	rcu_read_lock();
 
 	/* deliver the packet to sockets listening on all devices */
diff -druNp --no-dereference linux-libre-4.1.4-gnu/net/can/bcm.c linux-libre-4.1.5-gnu/net/can/bcm.c
--- linux-libre-4.1.4-gnu/net/can/bcm.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/net/can/bcm.c	2015-08-10 15:22:34.000000000 -0400
@@ -261,6 +261,7 @@ static void bcm_can_tx(struct bcm_op *op
 
 	can_skb_reserve(skb);
 	can_skb_prv(skb)->ifindex = dev->ifindex;
+	can_skb_prv(skb)->skbcnt = 0;
 
 	memcpy(skb_put(skb, CFSIZ), cf, CFSIZ);
 
@@ -1217,6 +1218,7 @@ static int bcm_tx_send(struct msghdr *ms
 	}
 
 	can_skb_prv(skb)->ifindex = dev->ifindex;
+	can_skb_prv(skb)->skbcnt = 0;
 	skb->dev = dev;
 	can_skb_set_owner(skb, sk);
 	err = can_send(skb, 1); /* send with loopback */
diff -druNp --no-dereference linux-libre-4.1.4-gnu/net/can/raw.c linux-libre-4.1.5-gnu/net/can/raw.c
--- linux-libre-4.1.4-gnu/net/can/raw.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/net/can/raw.c	2015-08-10 15:22:34.000000000 -0400
@@ -75,7 +75,7 @@ MODULE_ALIAS("can-proto-1");
  */
 
 struct uniqframe {
-	ktime_t tstamp;
+	int skbcnt;
 	const struct sk_buff *skb;
 	unsigned int join_rx_count;
 };
@@ -133,7 +133,7 @@ static void raw_rcv(struct sk_buff *oskb
 
 	/* eliminate multiple filter matches for the same skb */
 	if (this_cpu_ptr(ro->uniq)->skb == oskb &&
-	    ktime_equal(this_cpu_ptr(ro->uniq)->tstamp, oskb->tstamp)) {
+	    this_cpu_ptr(ro->uniq)->skbcnt == can_skb_prv(oskb)->skbcnt) {
 		if (ro->join_filters) {
 			this_cpu_inc(ro->uniq->join_rx_count);
 			/* drop frame until all enabled filters matched */
@@ -144,7 +144,7 @@ static void raw_rcv(struct sk_buff *oskb
 		}
 	} else {
 		this_cpu_ptr(ro->uniq)->skb = oskb;
-		this_cpu_ptr(ro->uniq)->tstamp = oskb->tstamp;
+		this_cpu_ptr(ro->uniq)->skbcnt = can_skb_prv(oskb)->skbcnt;
 		this_cpu_ptr(ro->uniq)->join_rx_count = 1;
 		/* drop first frame to check all enabled filters? */
 		if (ro->join_filters && ro->count > 1)
@@ -749,6 +749,7 @@ static int raw_sendmsg(struct socket *so
 
 	can_skb_reserve(skb);
 	can_skb_prv(skb)->ifindex = dev->ifindex;
+	can_skb_prv(skb)->skbcnt = 0;
 
 	err = memcpy_from_msg(skb_put(skb, size), msg, size);
 	if (err < 0)
diff -druNp --no-dereference linux-libre-4.1.4-gnu/net/mac80211/debugfs_netdev.c linux-libre-4.1.5-gnu/net/mac80211/debugfs_netdev.c
--- linux-libre-4.1.4-gnu/net/mac80211/debugfs_netdev.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/net/mac80211/debugfs_netdev.c	2015-08-10 15:22:34.000000000 -0400
@@ -723,6 +723,7 @@ void ieee80211_debugfs_remove_netdev(str
 
 	debugfs_remove_recursive(sdata->vif.debugfs_dir);
 	sdata->vif.debugfs_dir = NULL;
+	sdata->debugfs.subdir_stations = NULL;
 }
 
 void ieee80211_debugfs_rename_netdev(struct ieee80211_sub_if_data *sdata)
diff -druNp --no-dereference linux-libre-4.1.4-gnu/net/rds/ib_rdma.c linux-libre-4.1.5-gnu/net/rds/ib_rdma.c
--- linux-libre-4.1.4-gnu/net/rds/ib_rdma.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/net/rds/ib_rdma.c	2015-08-10 15:22:34.000000000 -0400
@@ -759,8 +759,10 @@ void *rds_ib_get_mr(struct scatterlist *
 	}
 
 	ibmr = rds_ib_alloc_fmr(rds_ibdev);
-	if (IS_ERR(ibmr))
+	if (IS_ERR(ibmr)) {
+		rds_ib_dev_put(rds_ibdev);
 		return ibmr;
+	}
 
 	ret = rds_ib_map_fmr(rds_ibdev, ibmr, sg, nents);
 	if (ret == 0)
diff -druNp --no-dereference linux-libre-4.1.4-gnu/sound/core/pcm_native.c linux-libre-4.1.5-gnu/sound/core/pcm_native.c
--- linux-libre-4.1.4-gnu/sound/core/pcm_native.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/sound/core/pcm_native.c	2015-08-10 15:22:34.000000000 -0400
@@ -85,7 +85,7 @@ static DECLARE_RWSEM(snd_pcm_link_rwsem)
 void snd_pcm_stream_lock(struct snd_pcm_substream *substream)
 {
 	if (substream->pcm->nonatomic) {
-		down_read(&snd_pcm_link_rwsem);
+		down_read_nested(&snd_pcm_link_rwsem, SINGLE_DEPTH_NESTING);
 		mutex_lock(&substream->self_group.mutex);
 	} else {
 		read_lock(&snd_pcm_link_rwlock);
diff -druNp --no-dereference linux-libre-4.1.4-gnu/sound/pci/hda/hda_intel.c linux-libre-4.1.5-gnu/sound/pci/hda/hda_intel.c
--- linux-libre-4.1.4-gnu/sound/pci/hda/hda_intel.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/sound/pci/hda/hda_intel.c	2015-08-10 15:22:34.000000000 -0400
@@ -2056,6 +2056,8 @@ static const struct pci_device_id azx_id
 	/* ATI HDMI */
 	{ PCI_DEVICE(0x1002, 0x1308),
 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
+	{ PCI_DEVICE(0x1002, 0x157a),
+	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
 	{ PCI_DEVICE(0x1002, 0x793b),
 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
 	{ PCI_DEVICE(0x1002, 0x7919),
@@ -2110,8 +2112,14 @@ static const struct pci_device_id azx_id
 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
 	{ PCI_DEVICE(0x1002, 0xaab0),
 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
+	{ PCI_DEVICE(0x1002, 0xaac0),
+	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
 	{ PCI_DEVICE(0x1002, 0xaac8),
 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
+	{ PCI_DEVICE(0x1002, 0xaad8),
+	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
+	{ PCI_DEVICE(0x1002, 0xaae8),
+	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
 	/* VIA VT8251/VT8237A */
 	{ PCI_DEVICE(0x1106, 0x3288),
 	  .driver_data = AZX_DRIVER_VIA | AZX_DCAPS_POSFIX_VIA },
diff -druNp --no-dereference linux-libre-4.1.4-gnu/sound/pci/hda/patch_hdmi.c linux-libre-4.1.5-gnu/sound/pci/hda/patch_hdmi.c
--- linux-libre-4.1.4-gnu/sound/pci/hda/patch_hdmi.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/sound/pci/hda/patch_hdmi.c	2015-08-10 15:22:34.000000000 -0400
@@ -3333,6 +3333,7 @@ static const struct hda_codec_preset snd
 { .id = 0x10de0070, .name = "GPU 70 HDMI/DP",	.patch = patch_nvhdmi },
 { .id = 0x10de0071, .name = "GPU 71 HDMI/DP",	.patch = patch_nvhdmi },
 { .id = 0x10de0072, .name = "GPU 72 HDMI/DP",	.patch = patch_nvhdmi },
+{ .id = 0x10de007d, .name = "GPU 7d HDMI/DP",	.patch = patch_nvhdmi },
 { .id = 0x10de8001, .name = "MCP73 HDMI",	.patch = patch_nvhdmi_2ch },
 { .id = 0x11069f80, .name = "VX900 HDMI/DP",	.patch = patch_via_hdmi },
 { .id = 0x11069f81, .name = "VX900 HDMI/DP",	.patch = patch_via_hdmi },
@@ -3396,6 +3397,7 @@ MODULE_ALIAS("snd-hda-codec-id:10de0067"
 MODULE_ALIAS("snd-hda-codec-id:10de0070");
 MODULE_ALIAS("snd-hda-codec-id:10de0071");
 MODULE_ALIAS("snd-hda-codec-id:10de0072");
+MODULE_ALIAS("snd-hda-codec-id:10de007d");
 MODULE_ALIAS("snd-hda-codec-id:10de8001");
 MODULE_ALIAS("snd-hda-codec-id:11069f80");
 MODULE_ALIAS("snd-hda-codec-id:11069f81");
diff -druNp --no-dereference linux-libre-4.1.4-gnu/sound/pci/hda/patch_realtek.c linux-libre-4.1.5-gnu/sound/pci/hda/patch_realtek.c
--- linux-libre-4.1.4-gnu/sound/pci/hda/patch_realtek.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/sound/pci/hda/patch_realtek.c	2015-08-10 15:22:34.000000000 -0400
@@ -2224,7 +2224,7 @@ static const struct snd_pci_quirk alc882
 	SND_PCI_QUIRK(0x106b, 0x4300, "iMac 9,1", ALC889_FIXUP_IMAC91_VREF),
 	SND_PCI_QUIRK(0x106b, 0x4600, "MacbookPro 5,2", ALC889_FIXUP_IMAC91_VREF),
 	SND_PCI_QUIRK(0x106b, 0x4900, "iMac 9,1 Aluminum", ALC889_FIXUP_IMAC91_VREF),
-	SND_PCI_QUIRK(0x106b, 0x4a00, "Macbook 5,2", ALC889_FIXUP_IMAC91_VREF),
+	SND_PCI_QUIRK(0x106b, 0x4a00, "Macbook 5,2", ALC889_FIXUP_MBA11_VREF),
 
 	SND_PCI_QUIRK(0x1071, 0x8258, "Evesham Voyaeger", ALC882_FIXUP_EAPD),
 	SND_PCI_QUIRK(0x1462, 0x7350, "MSI-7350", ALC889_FIXUP_CD),
@@ -5004,7 +5004,7 @@ static const struct hda_fixup alc269_fix
 			{ 0x14, 0x90170110 },
 			{ 0x17, 0x40000008 },
 			{ 0x18, 0x411111f0 },
-			{ 0x19, 0x411111f0 },
+			{ 0x19, 0x01a1913c },
 			{ 0x1a, 0x411111f0 },
 			{ 0x1b, 0x411111f0 },
 			{ 0x1d, 0x40f89b2d },
@@ -5114,6 +5114,7 @@ static const struct snd_pci_quirk alc269
 	SND_PCI_QUIRK(0x1028, 0x064a, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
 	SND_PCI_QUIRK(0x1028, 0x064b, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
 	SND_PCI_QUIRK(0x1028, 0x0665, "Dell XPS 13", ALC288_FIXUP_DELL_XPS_13),
+	SND_PCI_QUIRK(0x1028, 0x069a, "Dell Vostro 5480", ALC290_FIXUP_SUBWOOFER_HSJACK),
 	SND_PCI_QUIRK(0x1028, 0x06c7, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE),
 	SND_PCI_QUIRK(0x1028, 0x06d9, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
 	SND_PCI_QUIRK(0x1028, 0x06da, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
@@ -5382,6 +5383,17 @@ static const struct snd_hda_pin_quirk al
 		{0x1d, 0x40700001},
 		{0x21, 0x02211030}),
 	SND_HDA_PIN_QUIRK(0x10ec0255, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
+		{0x12, 0x40000000},
+		{0x14, 0x90170130},
+		{0x17, 0x411111f0},
+		{0x18, 0x411111f0},
+		{0x19, 0x411111f0},
+		{0x1a, 0x411111f0},
+		{0x1b, 0x01014020},
+		{0x1d, 0x4054c029},
+		{0x1e, 0x411111f0},
+		{0x21, 0x0221103f}),
+	SND_HDA_PIN_QUIRK(0x10ec0255, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
 		{0x12, 0x90a60160},
 		{0x14, 0x90170120},
 		{0x17, 0x90170140},
diff -druNp --no-dereference linux-libre-4.1.4-gnu/sound/pci/hda/patch_sigmatel.c linux-libre-4.1.5-gnu/sound/pci/hda/patch_sigmatel.c
--- linux-libre-4.1.4-gnu/sound/pci/hda/patch_sigmatel.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/sound/pci/hda/patch_sigmatel.c	2015-08-10 15:22:34.000000000 -0400
@@ -2920,7 +2920,8 @@ static const struct snd_pci_quirk stac92
 	SND_PCI_QUIRK(PCI_VENDOR_ID_HP, 0x148a,
 		      "HP Mini", STAC_92HD83XXX_HP_LED),
 	SND_PCI_QUIRK_VENDOR(PCI_VENDOR_ID_HP, "HP", STAC_92HD83XXX_HP),
-	SND_PCI_QUIRK(PCI_VENDOR_ID_TOSHIBA, 0xfa91,
+	/* match both for 0xfa91 and 0xfa93 */
+	SND_PCI_QUIRK_MASK(PCI_VENDOR_ID_TOSHIBA, 0xfffd, 0xfa91,
 		      "Toshiba Satellite S50D", STAC_92HD83XXX_GPIO10_EAPD),
 	{} /* terminator */
 };
diff -druNp --no-dereference linux-libre-4.1.4-gnu/sound/usb/line6/pcm.c linux-libre-4.1.5-gnu/sound/usb/line6/pcm.c
--- linux-libre-4.1.4-gnu/sound/usb/line6/pcm.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/sound/usb/line6/pcm.c	2015-08-10 15:22:34.000000000 -0400
@@ -186,12 +186,8 @@ static int line6_stream_start(struct snd
 	int ret = 0;
 
 	spin_lock_irqsave(&pstr->lock, flags);
-	if (!test_and_set_bit(type, &pstr->running)) {
-		if (pstr->active_urbs || pstr->unlink_urbs) {
-			ret = -EBUSY;
-			goto error;
-		}
-
+	if (!test_and_set_bit(type, &pstr->running) &&
+	    !(pstr->active_urbs || pstr->unlink_urbs)) {
 		pstr->count = 0;
 		/* Submit all currently available URBs */
 		if (direction == SNDRV_PCM_STREAM_PLAYBACK)
@@ -199,7 +195,6 @@ static int line6_stream_start(struct snd
 		else
 			ret = line6_submit_audio_in_all_urbs(line6pcm);
 	}
- error:
 	if (ret < 0)
 		clear_bit(type, &pstr->running);
 	spin_unlock_irqrestore(&pstr->lock, flags);
diff -druNp --no-dereference linux-libre-4.1.4-gnu/sound/usb/mixer_maps.c linux-libre-4.1.5-gnu/sound/usb/mixer_maps.c
--- linux-libre-4.1.4-gnu/sound/usb/mixer_maps.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/sound/usb/mixer_maps.c	2015-08-10 15:22:34.000000000 -0400
@@ -341,6 +341,20 @@ static const struct usbmix_name_map scms
 	{ 0 }
 };
 
+/* Bose companion 5, the dB conversion factor is 16 instead of 256 */
+static struct usbmix_dB_map bose_companion5_dB = {-5006, -6};
+static struct usbmix_name_map bose_companion5_map[] = {
+	{ 3, NULL, .dB = &bose_companion5_dB },
+	{ 0 }	/* terminator */
+};
+
+/* Dragonfly DAC 1.2, the dB conversion factor is 1 instead of 256 */
+static struct usbmix_dB_map dragonfly_1_2_dB = {0, 5000};
+static struct usbmix_name_map dragonfly_1_2_map[] = {
+	{ 7, NULL, .dB = &dragonfly_1_2_dB },
+	{ 0 }	/* terminator */
+};
+
 /*
  * Control map entries
  */
@@ -451,6 +465,16 @@ static struct usbmix_ctl_map usbmix_ctl_
 		.id = USB_ID(0x25c4, 0x0003),
 		.map = scms_usb3318_map,
 	},
+	{
+		/* Bose Companion 5 */
+		.id = USB_ID(0x05a7, 0x1020),
+		.map = bose_companion5_map,
+	},
+	{
+		/* Dragonfly DAC 1.2 */
+		.id = USB_ID(0x21b4, 0x0081),
+		.map = dragonfly_1_2_map,
+	},
 	{ 0 } /* terminator */
 };
 
diff -druNp --no-dereference linux-libre-4.1.4-gnu/sound/usb/quirks-table.h linux-libre-4.1.5-gnu/sound/usb/quirks-table.h
--- linux-libre-4.1.4-gnu/sound/usb/quirks-table.h	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/sound/usb/quirks-table.h	2015-08-10 15:22:34.000000000 -0400
@@ -2512,6 +2512,74 @@ YAMAHA_DEVICE(0x7010, "UB99"),
 	}
 },
 
+/* Steinberg devices */
+{
+	/* Steinberg MI2 */
+	USB_DEVICE_VENDOR_SPEC(0x0a4e, 0x2040),
+	.driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) {
+		.ifnum = QUIRK_ANY_INTERFACE,
+		.type = QUIRK_COMPOSITE,
+		.data = & (const struct snd_usb_audio_quirk[]) {
+			{
+				.ifnum = 0,
+				.type = QUIRK_AUDIO_STANDARD_INTERFACE
+			},
+			{
+				.ifnum = 1,
+				.type = QUIRK_AUDIO_STANDARD_INTERFACE
+			},
+			{
+				.ifnum = 2,
+				.type = QUIRK_AUDIO_STANDARD_INTERFACE
+			},
+			{
+				.ifnum = 3,
+				.type = QUIRK_MIDI_FIXED_ENDPOINT,
+				.data = &(const struct snd_usb_midi_endpoint_info) {
+					.out_cables = 0x0001,
+					.in_cables  = 0x0001
+				}
+			},
+			{
+				.ifnum = -1
+			}
+		}
+	}
+},
+{
+	/* Steinberg MI4 */
+	USB_DEVICE_VENDOR_SPEC(0x0a4e, 0x4040),
+	.driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) {
+		.ifnum = QUIRK_ANY_INTERFACE,
+		.type = QUIRK_COMPOSITE,
+		.data = & (const struct snd_usb_audio_quirk[]) {
+			{
+				.ifnum = 0,
+				.type = QUIRK_AUDIO_STANDARD_INTERFACE
+			},
+			{
+				.ifnum = 1,
+				.type = QUIRK_AUDIO_STANDARD_INTERFACE
+			},
+			{
+				.ifnum = 2,
+				.type = QUIRK_AUDIO_STANDARD_INTERFACE
+			},
+			{
+				.ifnum = 3,
+				.type = QUIRK_MIDI_FIXED_ENDPOINT,
+				.data = &(const struct snd_usb_midi_endpoint_info) {
+					.out_cables = 0x0001,
+					.in_cables  = 0x0001
+				}
+			},
+			{
+				.ifnum = -1
+			}
+		}
+	}
+},
+
 /* TerraTec devices */
 {
 	USB_DEVICE_VENDOR_SPEC(0x0ccd, 0x0012),
diff -druNp --no-dereference linux-libre-4.1.4-gnu/tools/perf/ui/browsers/hists.c linux-libre-4.1.5-gnu/tools/perf/ui/browsers/hists.c
--- linux-libre-4.1.4-gnu/tools/perf/ui/browsers/hists.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/tools/perf/ui/browsers/hists.c	2015-08-10 15:22:34.000000000 -0400
@@ -45,7 +45,7 @@ static struct rb_node *hists__filter_ent
 
 static bool hist_browser__has_filter(struct hist_browser *hb)
 {
-	return hists__has_filter(hb->hists) || hb->min_pcnt;
+	return hists__has_filter(hb->hists) || hb->min_pcnt || symbol_conf.has_filter;
 }
 
 static int hist_browser__get_folding(struct hist_browser *browser)
diff -druNp --no-dereference linux-libre-4.1.4-gnu/tools/perf/util/symbol.c linux-libre-4.1.5-gnu/tools/perf/util/symbol.c
--- linux-libre-4.1.4-gnu/tools/perf/util/symbol.c	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/tools/perf/util/symbol.c	2015-08-10 15:22:34.000000000 -0400
@@ -1893,6 +1893,8 @@ int setup_intlist(struct intlist **list,
 		pr_err("problems parsing %s list\n", list_name);
 		return -1;
 	}
+
+	symbol_conf.has_filter = true;
 	return 0;
 }
 
diff -druNp --no-dereference linux-libre-4.1.4-gnu/tools/perf/util/symbol.h linux-libre-4.1.5-gnu/tools/perf/util/symbol.h
--- linux-libre-4.1.4-gnu/tools/perf/util/symbol.h	2015-08-03 12:30:08.000000000 -0400
+++ linux-libre-4.1.5-gnu/tools/perf/util/symbol.h	2015-08-10 15:22:34.000000000 -0400
@@ -105,7 +105,8 @@ struct symbol_conf {
 			demangle_kernel,
 			filter_relative,
 			show_hist_headers,
-			branch_callstack;
+			branch_callstack,
+			has_filter;
 	const char	*vmlinux_name,
 			*kallsyms_name,
 			*source_prefix,
