Updated from Linux LTS 3.10.25 to 3.10.26

Documentation/kernel-parameters.txt

@@ -1468,6 +1468,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 
 			* dump_id: dump IDENTIFY data.
 
+			* atapi_dmadir: Enable ATAPI DMADIR bridge support
+
+			* disable: Disable this device.
+
 			If there are multiple matching configurations changing
 			the same attribute, the last one is used.
 

Makefile

@@ -1,6 +1,6 @@
 VERSION = 3
 PATCHLEVEL = 10
-SUBLEVEL = 25
+SUBLEVEL = 26
 EXTRAVERSION =
 NAME = TOSSUG Baby Fish
 

arch/arm/include/asm/arch_timer.h

@@ -80,15 +80,6 @@ static inline u32 arch_timer_get_cntfrq(void)
 	return val;
 }
 
-static inline u64 arch_counter_get_cntpct(void)
-{
-	u64 cval;
-
-	isb();
-	asm volatile("mrrc p15, 0, %Q0, %R0, c14" : "=r" (cval));
-	return cval;
-}
-
 static inline u64 arch_counter_get_cntvct(void)
 {
 	u64 cval;

arch/arm/kernel/hyp-stub.S

@@ -153,6 +153,8 @@ THUMB(	orr	r7, #(1 << 30)	)	@ HSCTLR.TE
 	mrc	p15, 4, r7, c14, c1, 0	@ CNTHCTL
 	orr	r7, r7, #3		@ PL1PCEN | PL1PCTEN
 	mcr	p15, 4, r7, c14, c1, 0	@ CNTHCTL
+	mov	r7, #0
+	mcrr	p15, 4, r7, r7, c14	@ CNTVOFF
 1:
 #endif
 

arch/arm/kvm/interrupts_head.S

@@ -503,6 +503,10 @@ vcpu	.req	r0		@ vcpu pointer always in r0
 	add	r5, vcpu, r4
 	strd	r2, r3, [r5]
 
+	@ Ensure host CNTVCT == CNTPCT
+	mov	r2, #0
+	mcrr	p15, 4, r2, r2, c14	@ CNTVOFF
+
 1:
 #endif
 	@ Allow physical timer/counter access for the host

arch/arm/mach-omap2/omap_hwmod_2xxx_ipblock_data.c

@@ -796,7 +796,7 @@ struct omap_hwmod omap2xxx_counter_32k_hwmod = {
 
 /* gpmc */
 static struct omap_hwmod_irq_info omap2xxx_gpmc_irqs[] = {
-	{ .irq = 20 },
+	{ .irq = 20 + OMAP_INTC_START, },
 	{ .irq = -1 }
 };
 
@@ -841,7 +841,7 @@ static struct omap_hwmod_class omap2_rng_hwmod_class = {
 };
 
 static struct omap_hwmod_irq_info omap2_rng_mpu_irqs[] = {
-	{ .irq = 52 },
+	{ .irq = 52 + OMAP_INTC_START, },
 	{ .irq = -1 }
 };
 

arch/arm/mach-omap2/omap_hwmod_3xxx_data.c

@@ -2152,7 +2152,7 @@ static struct omap_hwmod_class omap3xxx_gpmc_hwmod_class = {
 };
 
 static struct omap_hwmod_irq_info omap3xxx_gpmc_irqs[] = {
-	{ .irq = 20 },
+	{ .irq = 20 + OMAP_INTC_START, },
 	{ .irq = -1 }
 };
 
@@ -2986,7 +2986,7 @@ static struct omap_mmu_dev_attr mmu_isp_dev_attr = {
 
 static struct omap_hwmod omap3xxx_mmu_isp_hwmod;
 static struct omap_hwmod_irq_info omap3xxx_mmu_isp_irqs[] = {
-	{ .irq = 24 },
+	{ .irq = 24 + OMAP_INTC_START, },
 	{ .irq = -1 }
 };
 
@@ -3028,7 +3028,7 @@ static struct omap_mmu_dev_attr mmu_iva_dev_attr = {
 
 static struct omap_hwmod omap3xxx_mmu_iva_hwmod;
 static struct omap_hwmod_irq_info omap3xxx_mmu_iva_irqs[] = {
-	{ .irq = 28 },
+	{ .irq = 28 + OMAP_INTC_START, },
 	{ .irq = -1 }
 };
 

arch/arm64/boot/dts/foundation-v8.dts

@@ -6,6 +6,8 @@
 
 /dts-v1/;
 
+/memreserve/ 0x80000000 0x00010000;
+
 / {
 	model = "Foundation-v8A";
 	compatible = "arm,foundation-aarch64", "arm,vexpress";

arch/arm64/include/asm/arch_timer.h

@@ -110,16 +110,6 @@ static inline void __cpuinit arch_counter_set_user_access(void)
 	asm volatile("msr	cntkctl_el1, %0" : : "r" (cntkctl));
 }
 
-static inline u64 arch_counter_get_cntpct(void)
-{
-	u64 cval;
-
-	isb();
-	asm volatile("mrs %0, cntpct_el0" : "=r" (cval));
-
-	return cval;
-}
-
 static inline u64 arch_counter_get_cntvct(void)
 {
 	u64 cval;

arch/arm64/include/asm/pgtable.h

@@ -184,7 +184,7 @@ static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
 #define pgprot_noncached(prot) \
 	__pgprot_modify(prot, PTE_ATTRINDX_MASK, PTE_ATTRINDX(MT_DEVICE_nGnRnE))
 #define pgprot_writecombine(prot) \
-	__pgprot_modify(prot, PTE_ATTRINDX_MASK, PTE_ATTRINDX(MT_DEVICE_GRE))
+	__pgprot_modify(prot, PTE_ATTRINDX_MASK, PTE_ATTRINDX(MT_NORMAL_NC))
 #define pgprot_dmacoherent(prot) \
 	__pgprot_modify(prot, PTE_ATTRINDX_MASK, PTE_ATTRINDX(MT_NORMAL_NC))
 #define __HAVE_PHYS_MEM_ACCESS_PROT

arch/arm64/include/asm/spinlock.h

@@ -59,9 +59,10 @@ static inline int arch_spin_trylock(arch_spinlock_t *lock)
 	unsigned int tmp;
 
 	asm volatile(
-	"	ldaxr	%w0, %1\n"
+	"2:	ldaxr	%w0, %1\n"
 	"	cbnz	%w0, 1f\n"
 	"	stxr	%w0, %w2, %1\n"
+	"	cbnz	%w0, 2b\n"
 	"1:\n"
 	: "=&r" (tmp), "+Q" (lock->lock)
 	: "r" (1)

arch/arm64/include/asm/syscall.h

@@ -59,6 +59,9 @@ static inline void syscall_get_arguments(struct task_struct *task,
 					 unsigned int i, unsigned int n,
 					 unsigned long *args)
 {
+	if (n == 0)
+		return;
+
 	if (i + n > SYSCALL_MAX_ARGS) {
 		unsigned long *args_bad = args + SYSCALL_MAX_ARGS - i;
 		unsigned int n_bad = n + i - SYSCALL_MAX_ARGS;
@@ -82,6 +85,9 @@ static inline void syscall_set_arguments(struct task_struct *task,
 					 unsigned int i, unsigned int n,
 					 const unsigned long *args)
 {
+	if (n == 0)
+		return;
+
 	if (i + n > SYSCALL_MAX_ARGS) {
 		pr_warning("%s called with max args %d, handling only %d\n",
 			   __func__, i + n, SYSCALL_MAX_ARGS);

arch/arm64/include/asm/thread_info.h

@@ -24,10 +24,10 @@
 #include <linux/compiler.h>
 
 #ifndef CONFIG_ARM64_64K_PAGES
-#define THREAD_SIZE_ORDER	1
+#define THREAD_SIZE_ORDER	2
 #endif
 
-#define THREAD_SIZE		8192
+#define THREAD_SIZE		16384
 #define THREAD_START_SP		(THREAD_SIZE - 16)
 
 #ifndef __ASSEMBLY__

arch/arm64/include/asm/virt.h

@@ -21,6 +21,7 @@
 #define BOOT_CPU_MODE_EL2	(0x0e12b007)
 
 #ifndef __ASSEMBLY__
+#include <asm/cacheflush.h>
 
 /*
  * __boot_cpu_mode records what mode CPUs were booted in.
@@ -36,9 +37,20 @@ extern u32 __boot_cpu_mode[2];
 void __hyp_set_vectors(phys_addr_t phys_vector_base);
 phys_addr_t __hyp_get_vectors(void);
 
+static inline void sync_boot_mode(void)
+{
+	/*
+	 * As secondaries write to __boot_cpu_mode with caches disabled, we
+	 * must flush the corresponding cache entries to ensure the visibility
+	 * of their writes.
+	 */
+	__flush_dcache_area(__boot_cpu_mode, sizeof(__boot_cpu_mode));
+}
+
 /* Reports the availability of HYP mode */
 static inline bool is_hyp_mode_available(void)
 {
+	sync_boot_mode();
 	return (__boot_cpu_mode[0] == BOOT_CPU_MODE_EL2 &&
 		__boot_cpu_mode[1] == BOOT_CPU_MODE_EL2);
 }
@@ -46,6 +58,7 @@ static inline bool is_hyp_mode_available(void)
 /* Check if the bootloader has booted CPUs in different modes */
 static inline bool is_hyp_mode_mismatched(void)
 {
+	sync_boot_mode();
 	return __boot_cpu_mode[0] != __boot_cpu_mode[1];
 }
 

arch/arm64/kernel/entry.S

@@ -121,7 +121,7 @@
 
 	.macro	get_thread_info, rd
 	mov	\rd, sp
-	and	\rd, \rd, #~((1 << 13) - 1)	// top of 8K stack
+	and	\rd, \rd, #~(THREAD_SIZE - 1)	// top of stack
 	.endm
 
 /*

arch/arm64/kernel/fpsimd.c

@@ -79,8 +79,10 @@ void fpsimd_thread_switch(struct task_struct *next)
 
 void fpsimd_flush_thread(void)
 {
+	preempt_disable();
 	memset(&current->thread.fpsimd_state, 0, sizeof(struct fpsimd_state));
 	fpsimd_load_state(&current->thread.fpsimd_state);
+	preempt_enable();
 }
 
 /*

arch/arm64/kernel/ptrace.c

@@ -236,31 +236,29 @@ static int ptrace_hbp_fill_attr_ctrl(unsigned int note_type,
 {
 	int err, len, type, disabled = !ctrl.enabled;
 
-	if (disabled) {
+	attr->disabled = disabled;
-		len = 0;
+	if (disabled)
-		type = HW_BREAKPOINT_EMPTY;
+		return 0;
-	} else {
-		err = arch_bp_generic_fields(ctrl, &len, &type);
-		if (err)
-			return err;
 
-		switch (note_type) {
+	err = arch_bp_generic_fields(ctrl, &len, &type);
-		case NT_ARM_HW_BREAK:
+	if (err)
-			if ((type & HW_BREAKPOINT_X) != type)
+		return err;
-				return -EINVAL;
+
-			break;
+	switch (note_type) {
-		case NT_ARM_HW_WATCH:
+	case NT_ARM_HW_BREAK:
-			if ((type & HW_BREAKPOINT_RW) != type)
+		if ((type & HW_BREAKPOINT_X) != type)
-				return -EINVAL;
-			break;
-		default:
 			return -EINVAL;
-		}
+		break;
+	case NT_ARM_HW_WATCH:
+		if ((type & HW_BREAKPOINT_RW) != type)
+			return -EINVAL;
+		break;
+	default:
+		return -EINVAL;
 	}
 
 	attr->bp_len	= len;
 	attr->bp_type	= type;
-	attr->disabled	= disabled;
 
 	return 0;
 }

arch/arm64/kernel/smp.c

@@ -199,13 +199,6 @@ asmlinkage void __cpuinit secondary_start_kernel(void)
 	raw_spin_lock(&boot_lock);
 	raw_spin_unlock(&boot_lock);
 
-	/*
-	 * Enable local interrupts.
-	 */
-	notify_cpu_starting(cpu);
-	local_irq_enable();
-	local_fiq_enable();
-
 	/*
 	 * OK, now it's safe to let the boot CPU continue.  Wait for
 	 * the CPU migration code to notice that the CPU is online
@@ -214,6 +207,14 @@ asmlinkage void __cpuinit secondary_start_kernel(void)
 	set_cpu_online(cpu, true);
 	complete(&cpu_running);
 
+	/*
+	 * Enable GIC and timers.
+	 */
+	notify_cpu_starting(cpu);
+
+	local_irq_enable();
+	local_fiq_enable();
+
 	/*
 	 * OK, it's off to the idle thread for us
 	 */

arch/arm64/mm/flush.c

@@ -77,14 +77,12 @@ void __flush_dcache_page(struct page *page)
 
 void __sync_icache_dcache(pte_t pte, unsigned long addr)
 {
-	unsigned long pfn;
+	struct page *page = pte_page(pte);
-	struct page *page;
 
-	pfn = pte_pfn(pte);
+	/* no flushing needed for anonymous pages */
-	if (!pfn_valid(pfn))
+	if (!page_mapping(page))
 		return;
 
-	page = pfn_to_page(pfn);
 	if (!test_and_set_bit(PG_dcache_clean, &page->flags)) {
 		__flush_dcache_page(page);
 		__flush_icache_all();
@@ -94,28 +92,14 @@ void __sync_icache_dcache(pte_t pte, unsigned long addr)
 }
 
 /*
- * Ensure cache coherency between kernel mapping and userspace mapping of this
+ * This function is called when a page has been modified by the kernel. Mark
- * page.
+ * it as dirty for later flushing when mapped in user space (if executable,
+ * see __sync_icache_dcache).
  */
 void flush_dcache_page(struct page *page)
 {
-	struct address_space *mapping;
+	if (test_bit(PG_dcache_clean, &page->flags))
-
-	/*
-	 * The zero page is never written to, so never has any dirty cache
-	 * lines, and therefore never needs to be flushed.
-	 */
-	if (page == ZERO_PAGE(0))
-		return;
-
-	mapping = page_mapping(page);
-	if (mapping && mapping_mapped(mapping)) {
-		__flush_dcache_page(page);
-		__flush_icache_all();
-		set_bit(PG_dcache_clean, &page->flags);
-	} else {
 		clear_bit(PG_dcache_clean, &page->flags);
-	}
 }
 EXPORT_SYMBOL(flush_dcache_page);
 

arch/arm64/mm/mmu.c

@@ -339,7 +339,6 @@ void __init paging_init(void)
 	bootmem_init();
 
 	empty_zero_page = virt_to_page(zero_page);
-	__flush_dcache_page(empty_zero_page);
 
 	/*
 	 * TTBR0 is only used for the identity mapping at this stage. Make it

arch/arm64/mm/proc.S

@@ -95,10 +95,6 @@ ENTRY(cpu_do_switch_mm)
 	ret
 ENDPROC(cpu_do_switch_mm)
 
-cpu_name:
-	.ascii	"AArch64 Processor"
-	.align
-
 	.section ".text.init", #alloc, #execinstr
 
 /*

arch/powerpc/include/asm/exception-64s.h

@@ -264,7 +264,7 @@ do_kvm_##n:								\
 	subi	r1,r1,INT_FRAME_SIZE;	/* alloc frame on kernel stack	*/ \
 	beq-	1f;							   \
 	ld	r1,PACAKSAVE(r13);	/* kernel stack to use		*/ \
-1:	cmpdi	cr1,r1,0;		/* check if r1 is in userspace	*/ \
+1:	cmpdi	cr1,r1,-INT_FRAME_SIZE;	/* check if r1 is in userspace	*/ \
 	blt+	cr1,3f;			/* abort if it is		*/ \
 	li	r1,(n);			/* will be reloaded later	*/ \
 	sth	r1,PACA_TRAP_SAVE(r13);					   \

arch/powerpc/kernel/head_64.S

@@ -467,6 +467,7 @@ _STATIC(__after_prom_start)
 	mtctr	r8
 	bctr
 
+.balign 8
 p_end:	.llong	_end - _stext
 
 4:	/* Now copy the rest of the kernel up to _end */

arch/powerpc/kvm/book3s_64_mmu_hv.c

@@ -473,11 +473,14 @@ static int kvmppc_mmu_book3s_64_hv_xlate(struct kvm_vcpu *vcpu, gva_t eaddr,
 		slb_v = vcpu->kvm->arch.vrma_slb_v;
 	}
 
+	preempt_disable();
 	/* Find the HPTE in the hash table */
 	index = kvmppc_hv_find_lock_hpte(kvm, eaddr, slb_v,
 					 HPTE_V_VALID | HPTE_V_ABSENT);
-	if (index < 0)
+	if (index < 0) {
+		preempt_enable();
 		return -ENOENT;
+	}
 	hptep = (unsigned long *)(kvm->arch.hpt_virt + (index << 4));
 	v = hptep[0] & ~HPTE_V_HVLOCK;
 	gr = kvm->arch.revmap[index].guest_rpte;
@@ -485,6 +488,7 @@ static int kvmppc_mmu_book3s_64_hv_xlate(struct kvm_vcpu *vcpu, gva_t eaddr,
 	/* Unlock the HPTE */
 	asm volatile("lwsync" : : : "memory");
 	hptep[0] = v;
+	preempt_enable();
 
 	gpte->eaddr = eaddr;
 	gpte->vpage = ((v & HPTE_V_AVPN) << 4) | ((eaddr >> 12) & 0xfff);

arch/powerpc/kvm/book3s_hv_rm_mmu.c

@@ -724,6 +724,10 @@ static int slb_base_page_shift[4] = {
 	20,	/* 1M, unsupported */
 };
 
+/* When called from virtmode, this func should be protected by
+ * preempt_disable(), otherwise, the holding of HPTE_V_HVLOCK
+ * can trigger deadlock issue.
+ */
 long kvmppc_hv_find_lock_hpte(struct kvm *kvm, gva_t eaddr, unsigned long slb_v,
 			      unsigned long valid)
 {

arch/sh/kernel/sh_ksyms_32.c

@@ -20,6 +20,11 @@ EXPORT_SYMBOL(csum_partial_copy_generic);
 EXPORT_SYMBOL(copy_page);
 EXPORT_SYMBOL(__clear_user);
 EXPORT_SYMBOL(empty_zero_page);
+#ifdef CONFIG_FLATMEM
+/* need in pfn_valid macro */
+EXPORT_SYMBOL(min_low_pfn);
+EXPORT_SYMBOL(max_low_pfn);
+#endif
 
 #define DECLARE_EXPORT(name)		\
 	extern void name(void);EXPORT_SYMBOL(name)

arch/sh/lib/Makefile

@@ -6,7 +6,7 @@ lib-y  = delay.o memmove.o memchr.o \
 	 checksum.o strlen.o div64.o div64-generic.o
 
 # Extracted from libgcc
-lib-y += movmem.o ashldi3.o ashrdi3.o lshrdi3.o \
+obj-y += movmem.o ashldi3.o ashrdi3.o lshrdi3.o \
 	 ashlsi3.o ashrsi3.o ashiftrt.o lshrsi3.o \
 	 udiv_qrnnd.o
 

arch/sparc/include/asm/pgtable_64.h

@@ -616,7 +616,7 @@ static inline unsigned long pte_present(pte_t pte)
 }
 
 #define pte_accessible pte_accessible
-static inline unsigned long pte_accessible(pte_t a)
+static inline unsigned long pte_accessible(struct mm_struct *mm, pte_t a)
 {
 	return pte_val(a) & _PAGE_VALID;
 }
@@ -806,7 +806,7 @@ static inline void __set_pte_at(struct mm_struct *mm, unsigned long addr,
 	 * SUN4V NOTE: _PAGE_VALID is the same value in both the SUN4U
 	 *             and SUN4V pte layout, so this inline test is fine.
 	 */
-	if (likely(mm != &init_mm) && pte_accessible(orig))
+	if (likely(mm != &init_mm) && pte_accessible(mm, orig))
 		tlb_batch_add(mm, addr, ptep, orig, fullmm);
 }
 

arch/x86/include/asm/pgtable.h

@@ -415,9 +415,16 @@ static inline int pte_present(pte_t a)
 }
 
 #define pte_accessible pte_accessible
-static inline int pte_accessible(pte_t a)
+static inline bool pte_accessible(struct mm_struct *mm, pte_t a)
 {
-	return pte_flags(a) & _PAGE_PRESENT;
+	if (pte_flags(a) & _PAGE_PRESENT)
+		return true;
+
+	if ((pte_flags(a) & (_PAGE_PROTNONE | _PAGE_NUMA)) &&
+			mm_tlb_flush_pending(mm))
+		return true;
+
+	return false;
 }
 
 static inline int pte_hidden(pte_t pte)

arch/x86/include/asm/spinlock.h

@@ -238,8 +238,4 @@ static inline void arch_write_unlock(arch_rwlock_t *rw)
 #define arch_read_relax(lock)	cpu_relax()
 #define arch_write_relax(lock)	cpu_relax()
 
-/* The {read|write|spin}_lock() on x86 are full memory barriers. */
-static inline void smp_mb__after_lock(void) { }
-#define ARCH_HAS_SMP_MB_AFTER_LOCK
-
 #endif /* _ASM_X86_SPINLOCK_H */

arch/x86/kernel/cpu/intel.c

@@ -387,7 +387,8 @@ static void __cpuinit init_intel(struct cpuinfo_x86 *c)
 			set_cpu_cap(c, X86_FEATURE_PEBS);
 	}
 
-	if (c->x86 == 6 && c->x86_model == 29 && cpu_has_clflush)
+	if (c->x86 == 6 && cpu_has_clflush &&
+	    (c->x86_model == 29 || c->x86_model == 46 || c->x86_model == 47))
 		set_cpu_cap(c, X86_FEATURE_CLFLUSH_MONITOR);
 
 #ifdef CONFIG_X86_64

arch/x86/kvm/lapic.c

@@ -1364,6 +1364,10 @@ void kvm_lapic_set_base(struct kvm_vcpu *vcpu, u64 value)
 		return;
 	}
 
+	if (!kvm_vcpu_is_bsp(apic->vcpu))
+		value &= ~MSR_IA32_APICBASE_BSP;
+	vcpu->arch.apic_base = value;
+
 	/* update jump label if enable bit changes */
 	if ((vcpu->arch.apic_base ^ value) & MSR_IA32_APICBASE_ENABLE) {
 		if (value & MSR_IA32_APICBASE_ENABLE)
@@ -1373,10 +1377,6 @@ void kvm_lapic_set_base(struct kvm_vcpu *vcpu, u64 value)
 		recalculate_apic_map(vcpu->kvm);
 	}
 
-	if (!kvm_vcpu_is_bsp(apic->vcpu))
-		value &= ~MSR_IA32_APICBASE_BSP;
-
-	vcpu->arch.apic_base = value;
 	if ((old_value ^ value) & X2APIC_ENABLE) {
 		if (value & X2APIC_ENABLE) {
 			u32 id = kvm_apic_id(apic);

drivers/ata/libata-core.c

@@ -2402,7 +2402,7 @@ int ata_dev_configure(struct ata_device *dev)
 			cdb_intr_string = ", CDB intr";
 		}
 
-		if (atapi_dmadir || atapi_id_dmadir(dev->id)) {
+		if (atapi_dmadir || (dev->horkage & ATA_HORKAGE_ATAPI_DMADIR) || atapi_id_dmadir(dev->id)) {
 			dev->flags |= ATA_DFLAG_DMADIR;
 			dma_dir_string = ", DMADIR";
 		}
@@ -4135,6 +4135,9 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
 	{ "ST3320[68]13AS",	"SD1[5-9]",	ATA_HORKAGE_NONCQ |
 						ATA_HORKAGE_FIRMWARE_WARN },
 
+	/* Seagate Momentus SpinPoint M8 seem to have FPMDA_AA issues */
+	{ "ST1000LM024 HN-M101MBB", "2AR10001",	ATA_HORKAGE_BROKEN_FPDMA_AA },
+
 	/* Blacklist entries taken from Silicon Image 3124/3132
 	   Windows driver .inf file - also several Linux problem reports */
 	{ "HTS541060G9SA00",    "MB3OC60D",     ATA_HORKAGE_NONCQ, },
@@ -6533,6 +6536,8 @@ static int __init ata_parse_force_one(char **cur,
 		{ "nosrst",	.lflags		= ATA_LFLAG_NO_SRST },
 		{ "norst",	.lflags		= ATA_LFLAG_NO_HRST | ATA_LFLAG_NO_SRST },
 		{ "rstonce",	.lflags		= ATA_LFLAG_RST_ONCE },
+		{ "atapi_dmadir", .horkage_on	= ATA_HORKAGE_ATAPI_DMADIR },
+		{ "disable",	.horkage_on	= ATA_HORKAGE_DISABLE },
 	};
 	char *start = *cur, *p = *cur;
 	char *id, *val, *endp;

drivers/ata/libata-scsi.c

@@ -3864,6 +3864,27 @@ void ata_scsi_hotplug(struct work_struct *work)
 		return;
 	}
 
+	/*
+	 * XXX - UGLY HACK
+	 *
+	 * The block layer suspend/resume path is fundamentally broken due
+	 * to freezable kthreads and workqueue and may deadlock if a block
+	 * device gets removed while resume is in progress.  I don't know
+	 * what the solution is short of removing freezable kthreads and
+	 * workqueues altogether.
+	 *
+	 * The following is an ugly hack to avoid kicking off device
+	 * removal while freezer is active.  This is a joke but does avoid
+	 * this particular deadlock scenario.
+	 *
+	 * https://bugzilla.kernel.org/show_bug.cgi?id=62801
+	 * http://marc.info/?l=linux-kernel&m=138695698516487
+	 */
+#ifdef CONFIG_FREEZER
+	while (pm_freezing)
+		msleep(10);
+#endif
+
 	DPRINTK("ENTER\n");
 	mutex_lock(&ap->scsi_scan_mutex);
 

drivers/block/rbd.c

@@ -937,12 +937,14 @@ static const char *rbd_dev_v1_snap_name(struct rbd_device *rbd_dev,
 					u64 snap_id)
 {
 	u32 which;
+	const char *snap_name;
 
 	which = rbd_dev_snap_index(rbd_dev, snap_id);
 	if (which == BAD_SNAP_INDEX)
-		return NULL;
+		return ERR_PTR(-ENOENT);
 
-	return _rbd_dev_v1_snap_name(rbd_dev, which);
+	snap_name = _rbd_dev_v1_snap_name(rbd_dev, which);
+	return snap_name ? snap_name : ERR_PTR(-ENOMEM);
 }
 
 static const char *rbd_snap_name(struct rbd_device *rbd_dev, u64 snap_id)
@@ -1126,6 +1128,7 @@ static void zero_bio_chain(struct bio *chain, int start_ofs)
 				buf = bvec_kmap_irq(bv, &flags);
 				memset(buf + remainder, 0,
 				       bv->bv_len - remainder);
+				flush_dcache_page(bv->bv_page);
 				bvec_kunmap_irq(buf, &flags);
 			}
 			pos += bv->bv_len;
@@ -1158,6 +1161,7 @@ static void zero_pages(struct page **pages, u64 offset, u64 end)
 		local_irq_save(flags);
 		kaddr = kmap_atomic(*page);
 		memset(kaddr + page_offset, 0, length);
+		flush_dcache_page(*page);
 		kunmap_atomic(kaddr);
 		local_irq_restore(flags);
 
@@ -2171,9 +2175,9 @@ static int rbd_img_request_fill(struct rbd_img_request *img_request,
 	struct rbd_obj_request *obj_request = NULL;
 	struct rbd_obj_request *next_obj_request;
 	bool write_request = img_request_write_test(img_request);
-	struct bio *bio_list;
+	struct bio *bio_list = 0;
 	unsigned int bio_offset = 0;
-	struct page **pages;
+	struct page **pages = 0;
 	u64 img_offset;
 	u64 resid;
 	u16 opcode;
@@ -2211,6 +2215,11 @@ static int rbd_img_request_fill(struct rbd_img_request *img_request,
 		rbd_segment_name_free(object_name);
 		if (!obj_request)
 			goto out_unwind;
+		/*
+		 * set obj_request->img_request before creating the
+		 * osd_request so that it gets the right snapc
+		 */
+		rbd_img_obj_request_add(img_request, obj_request);
 
 		if (type == OBJ_REQUEST_BIO) {
 			unsigned int clone_size;
@@ -2252,11 +2261,6 @@ static int rbd_img_request_fill(struct rbd_img_request *img_request,
 					obj_request->pages, length,
 					offset & ~PAGE_MASK, false, false);
 
-		/*
-		 * set obj_request->img_request before formatting
-		 * the osd_request so that it gets the right snapc
-		 */
-		rbd_img_obj_request_add(img_request, obj_request);
 		if (write_request)
 			rbd_osd_req_format_write(obj_request);
 		else
@@ -2817,7 +2821,7 @@ out_err:
 	obj_request_done_set(obj_request);
 }
 
-static int rbd_obj_notify_ack(struct rbd_device *rbd_dev, u64 notify_id)
+static int rbd_obj_notify_ack_sync(struct rbd_device *rbd_dev, u64 notify_id)
 {
 	struct rbd_obj_request *obj_request;
 	struct ceph_osd_client *osdc = &rbd_dev->rbd_client->client->osdc;
@@ -2832,16 +2836,17 @@ static int rbd_obj_notify_ack(struct rbd_device *rbd_dev, u64 notify_id)
 	obj_request->osd_req = rbd_osd_req_create(rbd_dev, false, obj_request);
 	if (!obj_request->osd_req)
 		goto out;
-	obj_request->callback = rbd_obj_request_put;
 
 	osd_req_op_watch_init(obj_request->osd_req, 0, CEPH_OSD_OP_NOTIFY_ACK,
 					notify_id, 0, 0);
 	rbd_osd_req_format_read(obj_request);
 
 	ret = rbd_obj_request_submit(osdc, obj_request);
-out:
 	if (ret)
-		rbd_obj_request_put(obj_request);
+		goto out;
+	ret = rbd_obj_request_wait(obj_request);
+out:
+	rbd_obj_request_put(obj_request);
 
 	return ret;
 }
@@ -2861,7 +2866,7 @@ static void rbd_watch_cb(u64 ver, u64 notify_id, u8 opcode, void *data)
 	if (ret)
 		rbd_warn(rbd_dev, ": header refresh error (%d)\n", ret);
 
-	rbd_obj_notify_ack(rbd_dev, notify_id);
+	rbd_obj_notify_ack_sync(rbd_dev, notify_id);
 }
 
 /*
@@ -3333,6 +3338,31 @@ static void rbd_exists_validate(struct rbd_device *rbd_dev)
 		clear_bit(RBD_DEV_FLAG_EXISTS, &rbd_dev->flags);
 }
 
+static void rbd_dev_update_size(struct rbd_device *rbd_dev)
+{
+	sector_t size;
+	bool removing;
+
+	/*
+	 * Don't hold the lock while doing disk operations,
+	 * or lock ordering will conflict with the bdev mutex via:
+	 * rbd_add() -> blkdev_get() -> rbd_open()
+	 */
+	spin_lock_irq(&rbd_dev->lock);
+	removing = test_bit(RBD_DEV_FLAG_REMOVING, &rbd_dev->flags);
+	spin_unlock_irq(&rbd_dev->lock);
+	/*
+	 * If the device is being removed, rbd_dev->disk has
+	 * been destroyed, so don't try to update its size
+	 */
+	if (!removing) {
+		size = (sector_t)rbd_dev->mapping.size / SECTOR_SIZE;
+		dout("setting size to %llu sectors", (unsigned long long)size);
+		set_capacity(rbd_dev->disk, size);
+		revalidate_disk(rbd_dev->disk);
+	}
+}
+
 static int rbd_dev_refresh(struct rbd_device *rbd_dev)
 {
 	u64 mapping_size;
@@ -3351,12 +3381,7 @@ static int rbd_dev_refresh(struct rbd_device *rbd_dev)
 	rbd_exists_validate(rbd_dev);
 	mutex_unlock(&ctl_mutex);
 	if (mapping_size != rbd_dev->mapping.size) {
-		sector_t size;
+		rbd_dev_update_size(rbd_dev);
-
-		size = (sector_t)rbd_dev->mapping.size / SECTOR_SIZE;
-		dout("setting size to %llu sectors", (unsigned long long)size);
-		set_capacity(rbd_dev->disk, size);
-		revalidate_disk(rbd_dev->disk);
 	}
 
 	return ret;
@@ -3710,12 +3735,14 @@ static int _rbd_dev_v2_snap_size(struct rbd_device *rbd_dev, u64 snap_id,
 	if (ret < sizeof (size_buf))
 		return -ERANGE;
 
-	if (order)
+	if (order) {
 		*order = size_buf.order;
+		dout("  order %u", (unsigned int)*order);
+	}
 	*snap_size = le64_to_cpu(size_buf.size);
 
-	dout("  snap_id 0x%016llx order = %u, snap_size = %llu\n",
+	dout("  snap_id 0x%016llx snap_size = %llu\n",
-		(unsigned long long)snap_id, (unsigned int)*order,
+		(unsigned long long)snap_id,
 		(unsigned long long)*snap_size);
 
 	return 0;
@@ -4030,8 +4057,13 @@ static u64 rbd_v2_snap_id_by_name(struct rbd_device *rbd_dev, const char *name)
 
 		snap_id = snapc->snaps[which];
 		snap_name = rbd_dev_v2_snap_name(rbd_dev, snap_id);
-		if (IS_ERR(snap_name))
+		if (IS_ERR(snap_name)) {
-			break;
+			/* ignore no-longer existing snapshots */
+			if (PTR_ERR(snap_name) == -ENOENT)
+				continue;
+			else
+				break;
+		}
 		found = !strcmp(name, snap_name);
 		kfree(snap_name);
 	}
@@ -4110,8 +4142,8 @@ static int rbd_dev_spec_update(struct rbd_device *rbd_dev)
 	/* Look up the snapshot name, and make a copy */
 
 	snap_name = rbd_snap_name(rbd_dev, spec->snap_id);
-	if (!snap_name) {
+	if (IS_ERR(snap_name)) {
-		ret = -ENOMEM;
+		ret = PTR_ERR(snap_name);
 		goto out_err;
 	}
 
@@ -5059,23 +5091,6 @@ err_out_module:
 	return (ssize_t)rc;
 }
 
-static struct rbd_device *__rbd_get_dev(unsigned long dev_id)
-{
-	struct list_head *tmp;
-	struct rbd_device *rbd_dev;
-
-	spin_lock(&rbd_dev_list_lock);
-	list_for_each(tmp, &rbd_dev_list) {
-		rbd_dev = list_entry(tmp, struct rbd_device, node);
-		if (rbd_dev->dev_id == dev_id) {
-			spin_unlock(&rbd_dev_list_lock);
-			return rbd_dev;
-		}
-	}
-	spin_unlock(&rbd_dev_list_lock);
-	return NULL;
-}
-
 static void rbd_dev_device_release(struct device *dev)
 {
 	struct rbd_device *rbd_dev = dev_to_rbd_dev(dev);
@@ -5120,8 +5135,10 @@ static ssize_t rbd_remove(struct bus_type *bus,
 			  size_t count)
 {
 	struct rbd_device *rbd_dev = NULL;
-	int target_id;
+	struct list_head *tmp;
+	int dev_id;
 	unsigned long ul;
+	bool already = false;
 	int ret;
 
 	ret = strict_strtoul(buf, 10, &ul);
@@ -5129,30 +5146,51 @@ static ssize_t rbd_remove(struct bus_type *bus,
 		return ret;
 
 	/* convert to int; abort if we lost anything in the conversion */
-	target_id = (int) ul;
+	dev_id = (int)ul;
-	if (target_id != ul)
+	if (dev_id != ul)
 		return -EINVAL;
 
 	mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING);
 
-	rbd_dev = __rbd_get_dev(target_id);
+	ret = -ENOENT;
-	if (!rbd_dev) {
+	spin_lock(&rbd_dev_list_lock);
-		ret = -ENOENT;
+	list_for_each(tmp, &rbd_dev_list) {
-		goto done;
+		rbd_dev = list_entry(tmp, struct rbd_device, node);
+		if (rbd_dev->dev_id == dev_id) {
+			ret = 0;
+			break;
+		}
 	}
-
+	if (!ret) {
-	spin_lock_irq(&rbd_dev->lock);
+		spin_lock_irq(&rbd_dev->lock);
-	if (rbd_dev->open_count)
+		if (rbd_dev->open_count)
-		ret = -EBUSY;
+			ret = -EBUSY;
-	else
+		else
-		set_bit(RBD_DEV_FLAG_REMOVING, &rbd_dev->flags);
+			already = test_and_set_bit(RBD_DEV_FLAG_REMOVING,
-	spin_unlock_irq(&rbd_dev->lock);
+							&rbd_dev->flags);
-	if (ret < 0)
+		spin_unlock_irq(&rbd_dev->lock);
+	}
+	spin_unlock(&rbd_dev_list_lock);
+	if (ret < 0 || already)
 		goto done;
-	rbd_bus_del_dev(rbd_dev);
+
 	ret = rbd_dev_header_watch_sync(rbd_dev, false);
 	if (ret)
 		rbd_warn(rbd_dev, "failed to cancel watch event (%d)\n", ret);
+
+	/*
+	 * flush remaining watch callbacks - these must be complete
+	 * before the osd_client is shutdown
+	 */
+	dout("%s: flushing notifies", __func__);
+	ceph_osdc_flush_notifies(&rbd_dev->rbd_client->client->osdc);
+	/*
+	 * Don't free anything from rbd_dev->disk until after all
+	 * notifies are completely processed. Otherwise
+	 * rbd_bus_del_dev() will race with rbd_watch_cb(), resulting
+	 * in a potential use after free of rbd_dev->disk or rbd_dev.
+	 */
+	rbd_bus_del_dev(rbd_dev);
 	rbd_dev_image_release(rbd_dev);
 	module_put(THIS_MODULE);
 	ret = count;

drivers/clocksource/arm_arch_timer.c

@@ -186,27 +186,19 @@ u32 arch_timer_get_rate(void)
 	return arch_timer_rate;
 }
 
-/*
+u64 arch_timer_read_counter(void)
- * Some external users of arch_timer_read_counter (e.g. sched_clock) may try to
- * call it before it has been initialised. Rather than incur a performance
- * penalty checking for initialisation, provide a default implementation that
- * won't lead to time appearing to jump backwards.
- */
-static u64 arch_timer_read_zero(void)
 {
-	return 0;
+	return arch_counter_get_cntvct();
 }
 
-u64 (*arch_timer_read_counter)(void) = arch_timer_read_zero;
-
 static cycle_t arch_counter_read(struct clocksource *cs)
 {
-	return arch_timer_read_counter();
+	return arch_counter_get_cntvct();
 }
 
 static cycle_t arch_counter_read_cc(const struct cyclecounter *cc)
 {
-	return arch_timer_read_counter();
+	return arch_counter_get_cntvct();
 }
 
 static struct clocksource clocksource_counter = {
@@ -287,7 +279,7 @@ static int __init arch_timer_register(void)
 	cyclecounter.mult = clocksource_counter.mult;
 	cyclecounter.shift = clocksource_counter.shift;
 	timecounter_init(&timecounter, &cyclecounter,
-			 arch_counter_get_cntpct());
+			 arch_counter_get_cntvct());
 
 	if (arch_timer_use_virtual) {
 		ppi = arch_timer_ppi[VIRT_PPI];
@@ -376,11 +368,6 @@ static void __init arch_timer_init(struct device_node *np)
 		}
 	}
 
-	if (arch_timer_use_virtual)
-		arch_timer_read_counter = arch_counter_get_cntvct;
-	else
-		arch_timer_read_counter = arch_counter_get_cntpct;
-
 	arch_timer_register();
 	arch_timer_arch_init();
 }

drivers/clocksource/dw_apb_timer_of.c

@@ -77,7 +77,7 @@ static void __iomem *sched_io_base;
 
 static u32 read_sched_clock(void)
 {
-	return __raw_readl(sched_io_base);
+	return ~__raw_readl(sched_io_base);
 }
 
 static const struct of_device_id sptimer_ids[] __initconst = {

drivers/cpufreq/intel_pstate.c

@@ -755,6 +755,11 @@ static int intel_pstate_init_cpu(unsigned int cpunum)
 	cpu = all_cpu_data[cpunum];
 
 	intel_pstate_get_cpu_pstates(cpu);
+	if (!cpu->pstate.current_pstate) {
+		all_cpu_data[cpunum] = NULL;
+		kfree(cpu);
+		return -ENODATA;
+	}
 
 	cpu->cpu = cpunum;
 

drivers/dma/Kconfig

@@ -333,6 +333,7 @@ config NET_DMA
 	bool "Network: TCP receive copy offload"
 	depends on DMA_ENGINE && NET
 	default (INTEL_IOATDMA || FSL_DMA)
+	depends on BROKEN
 	help
 	  This enables the use of DMA engines in the network stack to
 	  offload receive copy-to-user operations, freeing CPU cycles.

drivers/firewire/sbp2.c

@@ -1626,7 +1626,6 @@ static struct scsi_host_template scsi_driver_template = {
 	.cmd_per_lun		= 1,
 	.can_queue		= 1,
 	.sdev_attrs		= sbp2_scsi_sysfs_attrs,
-	.no_write_same		= 1,
 };
 
 MODULE_AUTHOR("Kristian Hoegsberg <krh@bitplanet.net>");

drivers/gpio/gpio-msm-v2.c

@@ -248,7 +248,7 @@ static void msm_gpio_irq_mask(struct irq_data *d)
 
 	spin_lock_irqsave(&tlmm_lock, irq_flags);
 	writel(TARGET_PROC_NONE, GPIO_INTR_CFG_SU(gpio));
-	clear_gpio_bits(INTR_RAW_STATUS_EN | INTR_ENABLE, GPIO_INTR_CFG(gpio));
+	clear_gpio_bits(BIT(INTR_RAW_STATUS_EN) | BIT(INTR_ENABLE), GPIO_INTR_CFG(gpio));
 	__clear_bit(gpio, msm_gpio.enabled_irqs);
 	spin_unlock_irqrestore(&tlmm_lock, irq_flags);
 }
@@ -260,7 +260,7 @@ static void msm_gpio_irq_unmask(struct irq_data *d)
 
 	spin_lock_irqsave(&tlmm_lock, irq_flags);
 	__set_bit(gpio, msm_gpio.enabled_irqs);
-	set_gpio_bits(INTR_RAW_STATUS_EN | INTR_ENABLE, GPIO_INTR_CFG(gpio));
+	set_gpio_bits(BIT(INTR_RAW_STATUS_EN) | BIT(INTR_ENABLE), GPIO_INTR_CFG(gpio));
 	writel(TARGET_PROC_SCORPION, GPIO_INTR_CFG_SU(gpio));
 	spin_unlock_irqrestore(&tlmm_lock, irq_flags);
 }

drivers/gpio/gpio-twl4030.c

@@ -300,7 +300,7 @@ static int twl_direction_in(struct gpio_chip *chip, unsigned offset)
 	if (offset < TWL4030_GPIO_MAX)
 		ret = twl4030_set_gpio_direction(offset, 1);
 	else
-		ret = -EINVAL;
+		ret = -EINVAL;	/* LED outputs can't be set as input */
 
 	if (!ret)
 		priv->direction &= ~BIT(offset);
@@ -354,11 +354,20 @@ static void twl_set(struct gpio_chip *chip, unsigned offset, int value)
 static int twl_direction_out(struct gpio_chip *chip, unsigned offset, int value)
 {
 	struct gpio_twl4030_priv *priv = to_gpio_twl4030(chip);
-	int ret = -EINVAL;
+	int ret = 0;
 
 	mutex_lock(&priv->mutex);
-	if (offset < TWL4030_GPIO_MAX)
+	if (offset < TWL4030_GPIO_MAX) {
 		ret = twl4030_set_gpio_direction(offset, 0);
+		if (ret) {
+			mutex_unlock(&priv->mutex);
+			return ret;
+		}
+	}
+
+	/*
+	 *  LED gpios i.e. offset >= TWL4030_GPIO_MAX are always output
+	 */
 
 	priv->direction |= BIT(offset);
 	mutex_unlock(&priv->mutex);

drivers/gpu/drm/drm_edid.c

@@ -68,10 +68,12 @@
 #define EDID_QUIRK_DETAILED_SYNC_PP		(1 << 6)
 /* Force reduced-blanking timings for detailed modes */
 #define EDID_QUIRK_FORCE_REDUCED_BLANKING	(1 << 7)
+/* Force 8bpc */
+#define EDID_QUIRK_FORCE_8BPC			(1 << 8)
 /* The panel supports, but does not include a lower clocked mode for lvds */
-#define EDID_QUIRK_ADD_DOWNCLOCK_MODE           (1 << 8)
+#define EDID_QUIRK_ADD_DOWNCLOCK_MODE           (1 << 9)
 /* The panel can reduce consumption with shorter blanking intervals */
-#define EDID_QUIRK_SHORT_BLANKING               (1 << 9)
+#define EDID_QUIRK_SHORT_BLANKING               (1 << 10)
 
 
 struct detailed_mode_closure {
@@ -134,6 +136,9 @@ static struct edid_quirk {
 	/* Medion MD 30217 PG */
 	{ "MED", 0x7b8, EDID_QUIRK_PREFER_LARGE_75 },
 
+	/* Panel in Samsung NP700G7A-S01PL notebook reports 6bpc */
+	{ "SEC", 0xd033, EDID_QUIRK_FORCE_8BPC },
+
 	/* Samsung TFT-LCD LTN121AT10-301 */
 	{ "SEC", 0x3142, EDID_QUIRK_ADD_DOWNCLOCK_MODE },
 	/* Acer B116XW03 */
@@ -3412,6 +3417,9 @@ int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid)
 
 	drm_add_display_info(edid, &connector->display_info);
 
+	if (quirks & EDID_QUIRK_FORCE_8BPC)
+		connector->display_info.bpc = 8;
+
 	return num_modes;
 }
 EXPORT_SYMBOL(drm_add_edid_modes);

drivers/gpu/drm/i915/i915_dma.c

@@ -84,6 +84,14 @@ void i915_update_dri1_breadcrumb(struct drm_device *dev)
 	drm_i915_private_t *dev_priv = dev->dev_private;
 	struct drm_i915_master_private *master_priv;
 
+	/*
+	 * The dri breadcrumb update races against the drm master disappearing.
+	 * Instead of trying to fix this (this is by far not the only ums issue)
+	 * just don't do the update in kms mode.
+	 */
+	if (drm_core_check_feature(dev, DRIVER_MODESET))
+		return;
+
 	if (dev->primary->master) {
 		master_priv = dev->primary->master->driver_priv;
 		if (master_priv->sarea_priv)
@@ -1885,8 +1893,10 @@ void i915_driver_lastclose(struct drm_device * dev)
 
 void i915_driver_preclose(struct drm_device * dev, struct drm_file *file_priv)
 {
+	mutex_lock(&dev->struct_mutex);
 	i915_gem_context_close(dev, file_priv);
 	i915_gem_release(dev, file_priv);
+	mutex_unlock(&dev->struct_mutex);
 }
 
 void i915_driver_postclose(struct drm_device *dev, struct drm_file *file)

drivers/gpu/drm/i915/i915_gem_context.c

@@ -335,10 +335,8 @@ void i915_gem_context_close(struct drm_device *dev, struct drm_file *file)
 {
 	struct drm_i915_file_private *file_priv = file->driver_priv;
 
-	mutex_lock(&dev->struct_mutex);
 	idr_for_each(&file_priv->context_idr, context_idr_cleanup, NULL);
 	idr_destroy(&file_priv->context_idr);
-	mutex_unlock(&dev->struct_mutex);
 }
 
 static struct i915_hw_context *

drivers/gpu/drm/i915/intel_display.c

@@ -11027,7 +11027,9 @@ void intel_modeset_gem_init(struct drm_device *dev)
 
 	intel_setup_overlay(dev);
 
+	drm_modeset_lock_all(dev);
 	intel_modeset_setup_hw_state(dev, false);
+	drm_modeset_unlock_all(dev);
 }
 
 void intel_modeset_cleanup(struct drm_device *dev)
@@ -11107,14 +11109,15 @@ void intel_connector_attach_encoder(struct intel_connector *connector,
 int intel_modeset_vga_set_state(struct drm_device *dev, bool state)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
+	unsigned reg = INTEL_INFO(dev)->gen >= 6 ? SNB_GMCH_CTRL : INTEL_GMCH_CTRL;
 	u16 gmch_ctrl;
 
-	pci_read_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, &gmch_ctrl);
+	pci_read_config_word(dev_priv->bridge_dev, reg, &gmch_ctrl);
 	if (state)
 		gmch_ctrl &= ~INTEL_GMCH_VGA_DISABLE;
 	else
 		gmch_ctrl |= INTEL_GMCH_VGA_DISABLE;
-	pci_write_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, gmch_ctrl);
+	pci_write_config_word(dev_priv->bridge_dev, reg, gmch_ctrl);
 	return 0;
 }
 

drivers/gpu/drm/radeon/atombios_crtc.c

@@ -1176,7 +1176,9 @@ static int dce4_crtc_do_set_base(struct drm_crtc *crtc,
 	if ((rdev->family == CHIP_TAHITI) ||
 	    (rdev->family == CHIP_PITCAIRN))
 		fb_format |= SI_GRPH_PIPE_CONFIG(SI_ADDR_SURF_P8_32x32_8x16);
-	else if (rdev->family == CHIP_VERDE)
+	else if ((rdev->family == CHIP_VERDE) ||
+		 (rdev->family == CHIP_OLAND) ||
+		 (rdev->family == CHIP_HAINAN)) /* for completeness.  HAINAN has no display hw */
 		fb_format |= SI_GRPH_PIPE_CONFIG(SI_ADDR_SURF_P4_8x16);
 
 	switch (radeon_crtc->crtc_id) {

drivers/gpu/drm/radeon/ni.c

@@ -753,6 +753,10 @@ static void cayman_gpu_init(struct radeon_device *rdev)
 		    (rdev->pdev->device == 0x999C)) {
 			rdev->config.cayman.max_simds_per_se = 6;
 			rdev->config.cayman.max_backends_per_se = 2;
+			rdev->config.cayman.max_hw_contexts = 8;
+			rdev->config.cayman.sx_max_export_size = 256;
+			rdev->config.cayman.sx_max_export_pos_size = 64;
+			rdev->config.cayman.sx_max_export_smx_size = 192;
 		} else if ((rdev->pdev->device == 0x9903) ||
 			   (rdev->pdev->device == 0x9904) ||
 			   (rdev->pdev->device == 0x990A) ||
@@ -763,6 +767,10 @@ static void cayman_gpu_init(struct radeon_device *rdev)
 			   (rdev->pdev->device == 0x999D)) {
 			rdev->config.cayman.max_simds_per_se = 4;
 			rdev->config.cayman.max_backends_per_se = 2;
+			rdev->config.cayman.max_hw_contexts = 8;
+			rdev->config.cayman.sx_max_export_size = 256;
+			rdev->config.cayman.sx_max_export_pos_size = 64;
+			rdev->config.cayman.sx_max_export_smx_size = 192;
 		} else if ((rdev->pdev->device == 0x9919) ||
 			   (rdev->pdev->device == 0x9990) ||
 			   (rdev->pdev->device == 0x9991) ||
@@ -773,9 +781,17 @@ static void cayman_gpu_init(struct radeon_device *rdev)
 			   (rdev->pdev->device == 0x99A0)) {
 			rdev->config.cayman.max_simds_per_se = 3;
 			rdev->config.cayman.max_backends_per_se = 1;
+			rdev->config.cayman.max_hw_contexts = 4;
+			rdev->config.cayman.sx_max_export_size = 128;
+			rdev->config.cayman.sx_max_export_pos_size = 32;
+			rdev->config.cayman.sx_max_export_smx_size = 96;
 		} else {
 			rdev->config.cayman.max_simds_per_se = 2;
 			rdev->config.cayman.max_backends_per_se = 1;
+			rdev->config.cayman.max_hw_contexts = 4;
+			rdev->config.cayman.sx_max_export_size = 128;
+			rdev->config.cayman.sx_max_export_pos_size = 32;
+			rdev->config.cayman.sx_max_export_smx_size = 96;
 		}
 		rdev->config.cayman.max_texture_channel_caches = 2;
 		rdev->config.cayman.max_gprs = 256;
@@ -783,10 +799,6 @@ static void cayman_gpu_init(struct radeon_device *rdev)
 		rdev->config.cayman.max_gs_threads = 32;
 		rdev->config.cayman.max_stack_entries = 512;
 		rdev->config.cayman.sx_num_of_sets = 8;
-		rdev->config.cayman.sx_max_export_size = 256;
-		rdev->config.cayman.sx_max_export_pos_size = 64;
-		rdev->config.cayman.sx_max_export_smx_size = 192;
-		rdev->config.cayman.max_hw_contexts = 8;
 		rdev->config.cayman.sq_num_cf_insts = 2;
 
 		rdev->config.cayman.sc_prim_fifo_size = 0x40;

drivers/gpu/drm/radeon/radeon_uvd.c

@@ -460,7 +460,7 @@ static int radeon_uvd_cs_reloc(struct radeon_cs_parser *p,
 		return -EINVAL;
 	}
 
-	if ((start >> 28) != (end >> 28)) {
+	if ((start >> 28) != ((end - 1) >> 28)) {
 		DRM_ERROR("reloc %LX-%LX crossing 256MB boundary!\n",
 			  start, end);
 		return -EINVAL;

drivers/gpu/drm/radeon/rs690.c

@@ -162,6 +162,16 @@ static void rs690_mc_init(struct radeon_device *rdev)
 	base = RREG32_MC(R_000100_MCCFG_FB_LOCATION);
 	base = G_000100_MC_FB_START(base) << 16;
 	rdev->mc.igp_sideport_enabled = radeon_atombios_sideport_present(rdev);
+	/* Some boards seem to be configured for 128MB of sideport memory,
+	 * but really only have 64MB.  Just skip the sideport and use
+	 * UMA memory.
+	 */
+	if (rdev->mc.igp_sideport_enabled &&
+	    (rdev->mc.real_vram_size == (384 * 1024 * 1024))) {
+		base += 128 * 1024 * 1024;
+		rdev->mc.real_vram_size -= 128 * 1024 * 1024;
+		rdev->mc.mc_vram_size = rdev->mc.real_vram_size;
+	}
 
 	/* Use K8 direct mapping for fast fb access. */ 
 	rdev->fastfb_working = false;

drivers/idle/intel_idle.c

@@ -409,6 +409,9 @@ static int intel_idle(struct cpuidle_device *dev,
 
 	if (!current_set_polling_and_test()) {
 
+		if (this_cpu_has(X86_FEATURE_CLFLUSH_MONITOR))
+			clflush((void *)&current_thread_info()->flags);
+
 		__monitor((void *)&current_thread_info()->flags, 0, 0);
 		smp_mb();
 		if (!need_resched())

drivers/iio/adc/ad7887.c

@@ -211,7 +211,13 @@ static const struct ad7887_chip_info ad7887_chip_info_tbl[] = {
 			.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),
 			.address = 1,
 			.scan_index = 1,
-			.scan_type = IIO_ST('u', 12, 16, 0),
+			.scan_type = {
+				.sign = 'u',
+				.realbits = 12,
+				.storagebits = 16,
+				.shift = 0,
+				.endianness = IIO_BE,
+			},
 		},
 		.channel[1] = {
 			.type = IIO_VOLTAGE,
@@ -221,7 +227,13 @@ static const struct ad7887_chip_info ad7887_chip_info_tbl[] = {
 			.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),
 			.address = 0,
 			.scan_index = 0,
-			.scan_type = IIO_ST('u', 12, 16, 0),
+			.scan_type = {
+				.sign = 'u',
+				.realbits = 12,
+				.storagebits = 16,
+				.shift = 0,
+				.endianness = IIO_BE,
+			},
 		},
 		.channel[2] = IIO_CHAN_SOFT_TIMESTAMP(2),
 		.int_vref_mv = 2500,

drivers/iio/imu/adis16400_core.c

@@ -651,7 +651,12 @@ static const struct iio_chan_spec adis16448_channels[] = {
 		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),
 		.address = ADIS16448_BARO_OUT,
 		.scan_index = ADIS16400_SCAN_BARO,
-		.scan_type = IIO_ST('s', 16, 16, 0),
+		.scan_type = {
+			.sign = 's',
+			.realbits = 16,
+			.storagebits = 16,
+			.endianness = IIO_BE,
+		},
 	},
 	ADIS16400_TEMP_CHAN(ADIS16448_TEMP_OUT, 12),
 	IIO_CHAN_SOFT_TIMESTAMP(11)

drivers/infiniband/ulp/isert/ib_isert.c

@@ -242,21 +242,29 @@ isert_create_device_ib_res(struct isert_device *device)
 						isert_cq_event_callback,
 						(void *)&cq_desc[i],
 						ISER_MAX_RX_CQ_LEN, i);
-		if (IS_ERR(device->dev_rx_cq[i]))
+		if (IS_ERR(device->dev_rx_cq[i])) {
+			ret = PTR_ERR(device->dev_rx_cq[i]);
+			device->dev_rx_cq[i] = NULL;
 			goto out_cq;
+		}
 
 		device->dev_tx_cq[i] = ib_create_cq(device->ib_device,
 						isert_cq_tx_callback,
 						isert_cq_event_callback,
 						(void *)&cq_desc[i],
 						ISER_MAX_TX_CQ_LEN, i);
-		if (IS_ERR(device->dev_tx_cq[i]))
+		if (IS_ERR(device->dev_tx_cq[i])) {
+			ret = PTR_ERR(device->dev_tx_cq[i]);
+			device->dev_tx_cq[i] = NULL;
+			goto out_cq;
+		}
+
+		ret = ib_req_notify_cq(device->dev_rx_cq[i], IB_CQ_NEXT_COMP);
+		if (ret)
 			goto out_cq;
 
-		if (ib_req_notify_cq(device->dev_rx_cq[i], IB_CQ_NEXT_COMP))
+		ret = ib_req_notify_cq(device->dev_tx_cq[i], IB_CQ_NEXT_COMP);
-			goto out_cq;
+		if (ret)
-
-		if (ib_req_notify_cq(device->dev_tx_cq[i], IB_CQ_NEXT_COMP))
 			goto out_cq;
 	}
 

drivers/input/input.c

@@ -1975,6 +1975,10 @@ void input_set_capability(struct input_dev *dev, unsigned int type, unsigned int
 		break;
 
 	case EV_ABS:
+		input_alloc_absinfo(dev);
+		if (!dev->absinfo)
+			return;
+
 		__set_bit(code, dev->absbit);
 		break;
 

drivers/net/can/usb/peak_usb/pcan_usb_pro.c

@@ -927,6 +927,9 @@ static int pcan_usb_pro_init(struct peak_usb_device *dev)
 	/* set LED in default state (end of init phase) */
 	pcan_usb_pro_set_led(dev, 0, 1);
 
+	kfree(bi);
+	kfree(fi);
+
 	return 0;
 
  err_out:

drivers/net/ethernet/broadcom/tg3.c

@@ -7482,7 +7482,7 @@ static inline int tg3_4g_overflow_test(dma_addr_t mapping, int len)
 {
 	u32 base = (u32) mapping & 0xffffffff;
 
-	return (base > 0xffffdcc0) && (base + len + 8 < base);
+	return base + len + 8 < base;
 }
 
 /* Test for TSO DMA buffers that cross into regions which are within MSS bytes

drivers/net/usb/dm9601.c

@@ -364,7 +364,12 @@ static int dm9601_bind(struct usbnet *dev, struct usb_interface *intf)
 	dev->net->ethtool_ops = &dm9601_ethtool_ops;
 	dev->net->hard_header_len += DM_TX_OVERHEAD;
 	dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
-	dev->rx_urb_size = dev->net->mtu + ETH_HLEN + DM_RX_OVERHEAD;
+
+	/* dm9620/21a require room for 4 byte padding, even in dm9601
+	 * mode, so we need +1 to be able to receive full size
+	 * ethernet frames.
+	 */
+	dev->rx_urb_size = dev->net->mtu + ETH_HLEN + DM_RX_OVERHEAD + 1;
 
 	dev->mii.dev = dev->net;
 	dev->mii.mdio_read = dm9601_mdio_read;
@@ -468,7 +473,7 @@ static int dm9601_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
 static struct sk_buff *dm9601_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
 				       gfp_t flags)
 {
-	int len;
+	int len, pad;
 
 	/* format:
 	   b1: packet length low
@@ -476,12 +481,23 @@ static struct sk_buff *dm9601_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
 	   b3..n: packet data
 	*/
 
-	len = skb->len;
+	len = skb->len + DM_TX_OVERHEAD;
 
-	if (skb_headroom(skb) < DM_TX_OVERHEAD) {
+	/* workaround for dm962x errata with tx fifo getting out of
+	 * sync if a USB bulk transfer retry happens right after a
+	 * packet with odd / maxpacket length by adding up to 3 bytes
+	 * padding.
+	 */
+	while ((len & 1) || !(len % dev->maxpacket))
+		len++;
+
+	len -= DM_TX_OVERHEAD; /* hw header doesn't count as part of length */
+	pad = len - skb->len;
+
+	if (skb_headroom(skb) < DM_TX_OVERHEAD || skb_tailroom(skb) < pad) {
 		struct sk_buff *skb2;
 
-		skb2 = skb_copy_expand(skb, DM_TX_OVERHEAD, 0, flags);
+		skb2 = skb_copy_expand(skb, DM_TX_OVERHEAD, pad, flags);
 		dev_kfree_skb_any(skb);
 		skb = skb2;
 		if (!skb)
@@ -490,10 +506,10 @@ static struct sk_buff *dm9601_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
 
 	__skb_push(skb, DM_TX_OVERHEAD);
 
-	/* usbnet adds padding if length is a multiple of packet size
+	if (pad) {
-	   if so, adjust length value in header */
+		memset(skb->data + skb->len, 0, pad);
-	if ((skb->len % dev->maxpacket) == 0)
+		__skb_put(skb, pad);
-		len++;
+	}
 
 	skb->data[0] = len;
 	skb->data[1] = len >> 8;

drivers/net/wireless/ath/ath9k/ar9002_mac.c

@@ -76,9 +76,16 @@ static bool ar9002_hw_get_isr(struct ath_hw *ah, enum ath9k_int *masked)
 				mask2 |= ATH9K_INT_CST;
 			if (isr2 & AR_ISR_S2_TSFOOR)
 				mask2 |= ATH9K_INT_TSFOOR;
+
+			if (!(pCap->hw_caps & ATH9K_HW_CAP_RAC_SUPPORTED)) {
+				REG_WRITE(ah, AR_ISR_S2, isr2);
+				isr &= ~AR_ISR_BCNMISC;
+			}
 		}
 
-		isr = REG_READ(ah, AR_ISR_RAC);
+		if (pCap->hw_caps & ATH9K_HW_CAP_RAC_SUPPORTED)
+			isr = REG_READ(ah, AR_ISR_RAC);
+
 		if (isr == 0xffffffff) {
 			*masked = 0;
 			return false;
@@ -97,11 +104,23 @@ static bool ar9002_hw_get_isr(struct ath_hw *ah, enum ath9k_int *masked)
 
 			*masked |= ATH9K_INT_TX;
 
-			s0_s = REG_READ(ah, AR_ISR_S0_S);
+			if (pCap->hw_caps & ATH9K_HW_CAP_RAC_SUPPORTED) {
+				s0_s = REG_READ(ah, AR_ISR_S0_S);
+				s1_s = REG_READ(ah, AR_ISR_S1_S);
+			} else {
+				s0_s = REG_READ(ah, AR_ISR_S0);
+				REG_WRITE(ah, AR_ISR_S0, s0_s);
+				s1_s = REG_READ(ah, AR_ISR_S1);
+				REG_WRITE(ah, AR_ISR_S1, s1_s);
+
+				isr &= ~(AR_ISR_TXOK |
+					 AR_ISR_TXDESC |
+					 AR_ISR_TXERR |
+					 AR_ISR_TXEOL);
+			}
+
 			ah->intr_txqs |= MS(s0_s, AR_ISR_S0_QCU_TXOK);
 			ah->intr_txqs |= MS(s0_s, AR_ISR_S0_QCU_TXDESC);
-
-			s1_s = REG_READ(ah, AR_ISR_S1_S);
 			ah->intr_txqs |= MS(s1_s, AR_ISR_S1_QCU_TXERR);
 			ah->intr_txqs |= MS(s1_s, AR_ISR_S1_QCU_TXEOL);
 		}
@@ -114,13 +133,15 @@ static bool ar9002_hw_get_isr(struct ath_hw *ah, enum ath9k_int *masked)
 		*masked |= mask2;
 	}
 
-	if (AR_SREV_9100(ah))
+	if (!AR_SREV_9100(ah) && (isr & AR_ISR_GENTMR)) {
-		return true;
-
-	if (isr & AR_ISR_GENTMR) {
 		u32 s5_s;
 
-		s5_s = REG_READ(ah, AR_ISR_S5_S);
+		if (pCap->hw_caps & ATH9K_HW_CAP_RAC_SUPPORTED) {
+			s5_s = REG_READ(ah, AR_ISR_S5_S);
+		} else {
+			s5_s = REG_READ(ah, AR_ISR_S5);
+		}
+
 		ah->intr_gen_timer_trigger =
 				MS(s5_s, AR_ISR_S5_GENTIMER_TRIG);
 
@@ -133,8 +154,21 @@ static bool ar9002_hw_get_isr(struct ath_hw *ah, enum ath9k_int *masked)
 		if ((s5_s & AR_ISR_S5_TIM_TIMER) &&
 		    !(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
 			*masked |= ATH9K_INT_TIM_TIMER;
+
+		if (!(pCap->hw_caps & ATH9K_HW_CAP_RAC_SUPPORTED)) {
+			REG_WRITE(ah, AR_ISR_S5, s5_s);
+			isr &= ~AR_ISR_GENTMR;
+		}
 	}
 
+	if (!(pCap->hw_caps & ATH9K_HW_CAP_RAC_SUPPORTED)) {
+		REG_WRITE(ah, AR_ISR, isr);
+		REG_READ(ah, AR_ISR);
+	}
+
+	if (AR_SREV_9100(ah))
+		return true;
+
 	if (sync_cause) {
 		ath9k_debug_sync_cause(common, sync_cause);
 		fatal_int =

drivers/net/wireless/rtlwifi/pci.c

@@ -734,6 +734,8 @@ static void _rtl_pci_rx_interrupt(struct ieee80211_hw *hw)
 	};
 	int index = rtlpci->rx_ring[rx_queue_idx].idx;
 
+	if (rtlpci->driver_is_goingto_unload)
+		return;
 	/*RX NORMAL PKT */
 	while (count--) {
 		/*rx descriptor */
@@ -1630,6 +1632,7 @@ static void rtl_pci_stop(struct ieee80211_hw *hw)
 	 */
 	set_hal_stop(rtlhal);
 
+	rtlpci->driver_is_goingto_unload = true;
 	rtlpriv->cfg->ops->disable_interrupt(hw);
 	cancel_work_sync(&rtlpriv->works.lps_change_work);
 
@@ -1647,7 +1650,6 @@ static void rtl_pci_stop(struct ieee80211_hw *hw)
 	ppsc->rfchange_inprogress = true;
 	spin_unlock_irqrestore(&rtlpriv->locks.rf_ps_lock, flags);
 
-	rtlpci->driver_is_goingto_unload = true;
 	rtlpriv->cfg->ops->hw_disable(hw);
 	/* some things are not needed if firmware not available */
 	if (!rtlpriv->max_fw_size)

drivers/of/address.c

@@ -69,14 +69,6 @@ static u64 of_bus_default_map(__be32 *addr, const __be32 *range,
 		 (unsigned long long)cp, (unsigned long long)s,
 		 (unsigned long long)da);
 
-	/*
-	 * If the number of address cells is larger than 2 we assume the
-	 * mapping doesn't specify a physical address. Rather, the address
-	 * specifies an identifier that must match exactly.
-	 */
-	if (na > 2 && memcmp(range, addr, na * 4) != 0)
-		return OF_BAD_ADDR;
-
 	if (da < cp || da >= (cp + s))
 		return OF_BAD_ADDR;
 	return da - cp;

drivers/s390/char/tty3270.c

@@ -942,7 +942,7 @@ static int tty3270_install(struct tty_driver *driver, struct tty_struct *tty)
 		return rc;
 	}
 
-	tp->screen = tty3270_alloc_screen(tp->view.cols, tp->view.rows);
+	tp->screen = tty3270_alloc_screen(tp->view.rows, tp->view.cols);
 	if (IS_ERR(tp->screen)) {
 		rc = PTR_ERR(tp->screen);
 		raw3270_put_view(&tp->view);

drivers/staging/comedi/drivers/8255_pci.c

@@ -66,7 +66,8 @@ enum pci_8255_boardid {
 	BOARD_ADLINK_PCI7296,
 	BOARD_CB_PCIDIO24,
 	BOARD_CB_PCIDIO24H,
-	BOARD_CB_PCIDIO48H,
+	BOARD_CB_PCIDIO48H_OLD,
+	BOARD_CB_PCIDIO48H_NEW,
 	BOARD_CB_PCIDIO96H,
 	BOARD_NI_PCIDIO96,
 	BOARD_NI_PCIDIO96B,
@@ -109,11 +110,16 @@ static const struct pci_8255_boardinfo pci_8255_boards[] = {
 		.dio_badr	= 2,
 		.n_8255		= 1,
 	},
-	[BOARD_CB_PCIDIO48H] = {
+	[BOARD_CB_PCIDIO48H_OLD] = {
 		.name		= "cb_pci-dio48h",
 		.dio_badr	= 1,
 		.n_8255		= 2,
 	},
+	[BOARD_CB_PCIDIO48H_NEW] = {
+		.name		= "cb_pci-dio48h",
+		.dio_badr	= 2,
+		.n_8255		= 2,
+	},
 	[BOARD_CB_PCIDIO96H] = {
 		.name		= "cb_pci-dio96h",
 		.dio_badr	= 2,
@@ -270,7 +276,10 @@ static DEFINE_PCI_DEVICE_TABLE(pci_8255_pci_table) = {
 	{ PCI_VDEVICE(ADLINK, 0x7296), BOARD_ADLINK_PCI7296 },
 	{ PCI_VDEVICE(CB, 0x0028), BOARD_CB_PCIDIO24 },
 	{ PCI_VDEVICE(CB, 0x0014), BOARD_CB_PCIDIO24H },
-	{ PCI_VDEVICE(CB, 0x000b), BOARD_CB_PCIDIO48H },
+	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_CB, 0x000b, 0x0000, 0x0000),
+	  .driver_data = BOARD_CB_PCIDIO48H_OLD },
+	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_CB, 0x000b, PCI_VENDOR_ID_CB, 0x000b),
+	  .driver_data = BOARD_CB_PCIDIO48H_NEW },
 	{ PCI_VDEVICE(CB, 0x0017), BOARD_CB_PCIDIO96H },
 	{ PCI_VDEVICE(NI, 0x0160), BOARD_NI_PCIDIO96 },
 	{ PCI_VDEVICE(NI, 0x1630), BOARD_NI_PCIDIO96B },

drivers/target/iscsi/iscsi_target.c

@@ -838,24 +838,22 @@ int iscsit_setup_scsi_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
 	if (((hdr->flags & ISCSI_FLAG_CMD_READ) ||
 	     (hdr->flags & ISCSI_FLAG_CMD_WRITE)) && !hdr->data_length) {
 		/*
-		 * Vmware ESX v3.0 uses a modified Cisco Initiator (v3.4.2)
+		 * From RFC-3720 Section 10.3.1:
-		 * that adds support for RESERVE/RELEASE.  There is a bug
+		 *
-		 * add with this new functionality that sets R/W bits when
+		 * "Either or both of R and W MAY be 1 when either the
-		 * neither CDB carries any READ or WRITE datapayloads.
+		 *  Expected Data Transfer Length and/or Bidirectional Read
+		 *  Expected Data Transfer Length are 0"
+		 *
+		 * For this case, go ahead and clear the unnecssary bits
+		 * to avoid any confusion with ->data_direction.
 		 */
-		if ((hdr->cdb[0] == 0x16) || (hdr->cdb[0] == 0x17)) {
+		hdr->flags &= ~ISCSI_FLAG_CMD_READ;
-			hdr->flags &= ~ISCSI_FLAG_CMD_READ;
+		hdr->flags &= ~ISCSI_FLAG_CMD_WRITE;
-			hdr->flags &= ~ISCSI_FLAG_CMD_WRITE;
-			goto done;
-		}
 
-		pr_err("ISCSI_FLAG_CMD_READ or ISCSI_FLAG_CMD_WRITE"
+		pr_warn("ISCSI_FLAG_CMD_READ or ISCSI_FLAG_CMD_WRITE"
 			" set when Expected Data Transfer Length is 0 for"
-			" CDB: 0x%02x. Bad iSCSI Initiator.\n", hdr->cdb[0]);
+			" CDB: 0x%02x, Fixing up flags\n", hdr->cdb[0]);
-		return iscsit_add_reject_cmd(cmd,
-					     ISCSI_REASON_BOOKMARK_INVALID, buf);
 	}
-done:
 
 	if (!(hdr->flags & ISCSI_FLAG_CMD_READ) &&
 	    !(hdr->flags & ISCSI_FLAG_CMD_WRITE) && (hdr->data_length != 0)) {

drivers/target/target_core_device.c

@@ -1078,6 +1078,11 @@ int se_dev_set_block_size(struct se_device *dev, u32 block_size)
 	dev->dev_attrib.block_size = block_size;
 	pr_debug("dev[%p]: SE Device block_size changed to %u\n",
 			dev, block_size);
+
+	if (dev->dev_attrib.max_bytes_per_io)
+		dev->dev_attrib.hw_max_sectors =
+			dev->dev_attrib.max_bytes_per_io / block_size;
+
 	return 0;
 }
 

drivers/target/target_core_file.c

@@ -66,9 +66,8 @@ static int fd_attach_hba(struct se_hba *hba, u32 host_id)
 	pr_debug("CORE_HBA[%d] - TCM FILEIO HBA Driver %s on Generic"
 		" Target Core Stack %s\n", hba->hba_id, FD_VERSION,
 		TARGET_CORE_MOD_VERSION);
-	pr_debug("CORE_HBA[%d] - Attached FILEIO HBA: %u to Generic"
+	pr_debug("CORE_HBA[%d] - Attached FILEIO HBA: %u to Generic\n",
-		" MaxSectors: %u\n",
+		hba->hba_id, fd_host->fd_host_id);
-		hba->hba_id, fd_host->fd_host_id, FD_MAX_SECTORS);
 
 	return 0;
 }
@@ -220,7 +219,8 @@ static int fd_configure_device(struct se_device *dev)
 	}
 
 	dev->dev_attrib.hw_block_size = fd_dev->fd_block_size;
-	dev->dev_attrib.hw_max_sectors = FD_MAX_SECTORS;
+	dev->dev_attrib.max_bytes_per_io = FD_MAX_BYTES;
+	dev->dev_attrib.hw_max_sectors = FD_MAX_BYTES / fd_dev->fd_block_size;
 	dev->dev_attrib.hw_queue_depth = FD_MAX_DEVICE_QUEUE_DEPTH;
 
 	if (fd_dev->fbd_flags & FDBD_HAS_BUFFERED_IO_WCE) {

drivers/target/target_core_file.h

@@ -7,7 +7,10 @@
 #define FD_DEVICE_QUEUE_DEPTH	32
 #define FD_MAX_DEVICE_QUEUE_DEPTH 128
 #define FD_BLOCKSIZE		512
-#define FD_MAX_SECTORS		2048
+/*
+ * Limited by the number of iovecs (2048) per vfs_[writev,readv] call
+ */
+#define FD_MAX_BYTES		8388608
 
 #define RRF_EMULATE_CDB		0x01
 #define RRF_GOT_LBA		0x02

drivers/tty/serial/8250/8250_dw.c

@@ -369,6 +369,8 @@ MODULE_DEVICE_TABLE(of, dw8250_of_match);
 static const struct acpi_device_id dw8250_acpi_match[] = {
 	{ "INT33C4", 0 },
 	{ "INT33C5", 0 },
+	{ "INT3434", 0 },
+	{ "INT3435", 0 },
 	{ "80860F0A", 0 },
 	{ },
 };

drivers/tty/serial/pmac_zilog.c

@@ -2051,6 +2051,9 @@ static int __init pmz_console_init(void)
 	/* Probe ports */
 	pmz_probe();
 
+	if (pmz_ports_count == 0)
+		return -ENODEV;
+
 	/* TODO: Autoprobe console based on OF */
 	/* pmz_console.index = i; */
 	register_console(&pmz_console);

drivers/usb/serial/generic.c

@@ -176,14 +176,7 @@ retry:
 		return result;
 	}
 
-	/* Try sending off another urb, unless in irq context (in which case
+	goto retry;	/* try sending off another urb */
-	 * there will be no free urb). */
-	if (!in_irq())
-		goto retry;
-
-	clear_bit_unlock(USB_SERIAL_WRITE_BUSY, &port->flags);
-
-	return 0;
 }
 
 /**

drivers/usb/serial/option.c

@@ -251,6 +251,7 @@ static void option_instat_callback(struct urb *urb);
 #define ZTE_PRODUCT_MF628			0x0015
 #define ZTE_PRODUCT_MF626			0x0031
 #define ZTE_PRODUCT_MC2718			0xffe8
+#define ZTE_PRODUCT_AC2726			0xfff1
 
 #define BENQ_VENDOR_ID				0x04a5
 #define BENQ_PRODUCT_H10			0x4068
@@ -1456,6 +1457,7 @@ static const struct usb_device_id option_ids[] = {
 	{ USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff, 0x02, 0x01) },
 	{ USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff, 0x02, 0x05) },
 	{ USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff, 0x86, 0x10) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_AC2726, 0xff, 0xff, 0xff) },
 
 	{ USB_DEVICE(BENQ_VENDOR_ID, BENQ_PRODUCT_H10) },
 	{ USB_DEVICE(DLINK_VENDOR_ID, DLINK_PRODUCT_DWM_652) },

drivers/usb/serial/zte_ev.c

@@ -281,8 +281,7 @@ static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(0x19d2, 0xfffd) },
 	{ USB_DEVICE(0x19d2, 0xfffc) },
 	{ USB_DEVICE(0x19d2, 0xfffb) },
-	/* AC2726, AC8710_V3 */
+	/* AC8710_V3 */
-	{ USB_DEVICE_AND_INTERFACE_INFO(0x19d2, 0xfff1, 0xff, 0xff, 0xff) },
 	{ USB_DEVICE(0x19d2, 0xfff6) },
 	{ USB_DEVICE(0x19d2, 0xfff7) },
 	{ USB_DEVICE(0x19d2, 0xfff8) },

fs/ceph/addr.c

@@ -213,9 +213,13 @@ static int readpage_nounlock(struct file *filp, struct page *page)
 	if (err < 0) {
 		SetPageError(page);
 		goto out;
-	} else if (err < PAGE_CACHE_SIZE) {
+	} else {
+		if (err < PAGE_CACHE_SIZE) {
 		/* zero fill remainder of page */
-		zero_user_segment(page, err, PAGE_CACHE_SIZE);
+			zero_user_segment(page, err, PAGE_CACHE_SIZE);
+		} else {
+			flush_dcache_page(page);
+		}
 	}
 	SetPageUptodate(page);
 

fs/ceph/file.c

@@ -313,9 +313,9 @@ static int striped_read(struct inode *inode,
 {
 	struct ceph_fs_client *fsc = ceph_inode_to_client(inode);
 	struct ceph_inode_info *ci = ceph_inode(inode);
-	u64 pos, this_len;
+	u64 pos, this_len, left;
 	int io_align, page_align;
-	int left, pages_left;
+	int pages_left;
 	int read;
 	struct page **page_pos;
 	int ret;
@@ -346,47 +346,40 @@ more:
 		ret = 0;
 	hit_stripe = this_len < left;
 	was_short = ret >= 0 && ret < this_len;
-	dout("striped_read %llu~%u (read %u) got %d%s%s\n", pos, left, read,
+	dout("striped_read %llu~%llu (read %u) got %d%s%s\n", pos, left, read,
 	     ret, hit_stripe ? " HITSTRIPE" : "", was_short ? " SHORT" : "");
 
-	if (ret > 0) {
+	if (ret >= 0) {
-		int didpages = (page_align + ret) >> PAGE_CACHE_SHIFT;
+		int didpages;
-
+		if (was_short && (pos + ret < inode->i_size)) {
-		if (read < pos - off) {
+			u64 tmp = min(this_len - ret,
-			dout(" zero gap %llu to %llu\n", off + read, pos);
+					inode->i_size - pos - ret);
-			ceph_zero_page_vector_range(page_align + read,
+			dout(" zero gap %llu to %llu\n",
-						    pos - off - read, pages);
+				pos + ret, pos + ret + tmp);
+			ceph_zero_page_vector_range(page_align + read + ret,
+							tmp, pages);
+			ret += tmp;
 		}
+
+		didpages = (page_align + ret) >> PAGE_CACHE_SHIFT;
 		pos += ret;
 		read = pos - off;
 		left -= ret;
 		page_pos += didpages;
 		pages_left -= didpages;
 
-		/* hit stripe? */
+		/* hit stripe and need continue*/
-		if (left && hit_stripe)
+		if (left && hit_stripe && pos < inode->i_size)
 			goto more;
 	}
 
-	if (was_short) {
+	if (read > 0) {
+		ret = read;
 		/* did we bounce off eof? */
 		if (pos + left > inode->i_size)
 			*checkeof = 1;
-
-		/* zero trailing bytes (inside i_size) */
-		if (left > 0 && pos < inode->i_size) {
-			if (pos + left > inode->i_size)
-				left = inode->i_size - pos;
-
-			dout("zero tail %d\n", left);
-			ceph_zero_page_vector_range(page_align + read, left,
-						    pages);
-			read += left;
-		}
 	}
 
-	if (ret >= 0)
-		ret = read;
 	dout("striped_read returns %d\n", ret);
 	return ret;
 }
@@ -618,6 +611,8 @@ out:
 		if (check_caps)
 			ceph_check_caps(ceph_inode(inode), CHECK_CAPS_AUTHONLY,
 					NULL);
+	} else if (ret != -EOLDSNAPC && written > 0) {
+		ret = written;
 	}
 	return ret;
 }

fs/ceph/ioctl.c

@@ -211,8 +211,12 @@ static long ceph_ioctl_get_dataloc(struct file *file, void __user *arg)
 	snprintf(dl.object_name, sizeof(dl.object_name), "%llx.%08llx",
 		 ceph_ino(inode), dl.object_no);
 
-	ceph_calc_ceph_pg(&pgid, dl.object_name, osdc->osdmap,
+	r = ceph_calc_ceph_pg(&pgid, dl.object_name, osdc->osdmap,
-		ceph_file_layout_pg_pool(ci->i_layout));
+				ceph_file_layout_pg_pool(ci->i_layout));
+	if (r < 0) {
+		up_read(&osdc->map_sem);
+		return r;
+	}
 
 	dl.osd = ceph_calc_pg_primary(osdc->osdmap, pgid);
 	if (dl.osd >= 0) {

fs/ceph/mds_client.c

@@ -414,6 +414,9 @@ static struct ceph_mds_session *register_session(struct ceph_mds_client *mdsc,
 {
 	struct ceph_mds_session *s;
 
+	if (mds >= mdsc->mdsmap->m_max_mds)
+		return ERR_PTR(-EINVAL);
+
 	s = kzalloc(sizeof(*s), GFP_NOFS);
 	if (!s)
 		return ERR_PTR(-ENOMEM);
@@ -639,6 +642,8 @@ static void __unregister_request(struct ceph_mds_client *mdsc,
 		req->r_unsafe_dir = NULL;
 	}
 
+	complete_all(&req->r_safe_completion);
+
 	ceph_mdsc_put_request(req);
 }
 
@@ -1840,8 +1845,11 @@ static int __do_request(struct ceph_mds_client *mdsc,
 	int mds = -1;
 	int err = -EAGAIN;
 
-	if (req->r_err || req->r_got_result)
+	if (req->r_err || req->r_got_result) {
+		if (req->r_aborted)
+			__unregister_request(mdsc, req);
 		goto out;
+	}
 
 	if (req->r_timeout &&
 	    time_after_eq(jiffies, req->r_started + req->r_timeout)) {
@@ -2151,7 +2159,6 @@ static void handle_reply(struct ceph_mds_session *session, struct ceph_msg *msg)
 	if (head->safe) {
 		req->r_got_safe = true;
 		__unregister_request(mdsc, req);
-		complete_all(&req->r_safe_completion);
 
 		if (req->r_got_unsafe) {
 			/*
@@ -3040,8 +3047,10 @@ int ceph_mdsc_init(struct ceph_fs_client *fsc)
 	fsc->mdsc = mdsc;
 	mutex_init(&mdsc->mutex);
 	mdsc->mdsmap = kzalloc(sizeof(*mdsc->mdsmap), GFP_NOFS);
-	if (mdsc->mdsmap == NULL)
+	if (mdsc->mdsmap == NULL) {
+		kfree(mdsc);
 		return -ENOMEM;
+	}
 
 	init_completion(&mdsc->safe_umount_waiters);
 	init_waitqueue_head(&mdsc->session_close_wq);

fs/ceph/mdsmap.c

@@ -138,6 +138,8 @@ struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end)
 				m->m_info[mds].export_targets =
 					kcalloc(num_export_targets, sizeof(u32),
 						GFP_NOFS);
+				if (m->m_info[mds].export_targets == NULL)
+					goto badmem;
 				for (j = 0; j < num_export_targets; j++)
 					m->m_info[mds].export_targets[j] =
 					       ceph_decode_32(&pexport_targets);
@@ -170,7 +172,7 @@ bad:
 		       DUMP_PREFIX_OFFSET, 16, 1,
 		       start, end - start, true);
 	ceph_mdsmap_destroy(m);
-	return ERR_PTR(-EINVAL);
+	return ERR_PTR(err);
 }
 
 void ceph_mdsmap_destroy(struct ceph_mdsmap *m)

fs/ceph/super.c

@@ -357,7 +357,7 @@ static int parse_mount_options(struct ceph_mount_options **pfsopt,
 	}
 	err = -EINVAL;
 	dev_name_end--;		/* back up to ':' separator */
-	if (*dev_name_end != ':') {
+	if (dev_name_end < dev_name || *dev_name_end != ':') {
 		pr_err("device name is missing path (no : separator in %s)\n",
 				dev_name);
 		goto out;

fs/gfs2/aops.c

@@ -999,6 +999,7 @@ static ssize_t gfs2_direct_IO(int rw, struct kiocb *iocb,
 {
 	struct file *file = iocb->ki_filp;
 	struct inode *inode = file->f_mapping->host;
+	struct address_space *mapping = inode->i_mapping;
 	struct gfs2_inode *ip = GFS2_I(inode);
 	struct gfs2_holder gh;
 	int rv;
@@ -1019,6 +1020,35 @@ static ssize_t gfs2_direct_IO(int rw, struct kiocb *iocb,
 	if (rv != 1)
 		goto out; /* dio not valid, fall back to buffered i/o */
 
+	/*
+	 * Now since we are holding a deferred (CW) lock at this point, you
+	 * might be wondering why this is ever needed. There is a case however
+	 * where we've granted a deferred local lock against a cached exclusive
+	 * glock. That is ok provided all granted local locks are deferred, but
+	 * it also means that it is possible to encounter pages which are
+	 * cached and possibly also mapped. So here we check for that and sort
+	 * them out ahead of the dio. The glock state machine will take care of
+	 * everything else.
+	 *
+	 * If in fact the cached glock state (gl->gl_state) is deferred (CW) in
+	 * the first place, mapping->nr_pages will always be zero.
+	 */
+	if (mapping->nrpages) {
+		loff_t lstart = offset & (PAGE_CACHE_SIZE - 1);
+		loff_t len = iov_length(iov, nr_segs);
+		loff_t end = PAGE_ALIGN(offset + len) - 1;
+
+		rv = 0;
+		if (len == 0)
+			goto out;
+		if (test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags))
+			unmap_shared_mapping_range(ip->i_inode.i_mapping, offset, len);
+		rv = filemap_write_and_wait_range(mapping, lstart, end);
+		if (rv)
+			return rv;
+		truncate_inode_pages_range(mapping, lstart, end);
+	}
+
 	rv = __blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
 				  offset, nr_segs, gfs2_get_block_direct,
 				  NULL, NULL, 0);

fs/gfs2/ops_fstype.c

@@ -1317,8 +1317,18 @@ static struct dentry *gfs2_mount(struct file_system_type *fs_type, int flags,
 	if (IS_ERR(s))
 		goto error_bdev;
 
-	if (s->s_root)
+	if (s->s_root) {
+		/*
+		 * s_umount nests inside bd_mutex during
+		 * __invalidate_device().  blkdev_put() acquires
+		 * bd_mutex and can't be called under s_umount.  Drop
+		 * s_umount temporarily.  This is safe as we're
+		 * holding an active reference.
+		 */
+		up_write(&s->s_umount);
 		blkdev_put(bdev, mode);
+		down_write(&s->s_umount);
+	}
 
 	memset(&args, 0, sizeof(args));
 	args.ar_quota = GFS2_QUOTA_DEFAULT;

include/asm-generic/pgtable.h

@@ -220,7 +220,7 @@ static inline int pmd_same(pmd_t pmd_a, pmd_t pmd_b)
 #endif
 
 #ifndef pte_accessible
-# define pte_accessible(pte)		((void)(pte),1)
+# define pte_accessible(mm, pte)	((void)(pte), 1)
 #endif
 
 #ifndef flush_tlb_fix_spurious_fault

include/clocksource/arm_arch_timer.h

@@ -32,7 +32,7 @@
 #ifdef CONFIG_ARM_ARCH_TIMER
 
 extern u32 arch_timer_get_rate(void);
-extern u64 (*arch_timer_read_counter)(void);
+extern u64 arch_timer_read_counter(void);
 extern struct timecounter *arch_timer_get_timecounter(void);
 
 #else

include/drm/drm_pciids.h

@@ -559,7 +559,7 @@
 	{0x1002, 0x9645, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_SUMO2|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \
 	{0x1002, 0x9647, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_SUMO|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP},\
 	{0x1002, 0x9648, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_SUMO|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP},\
-	{0x1002, 0x9649, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_SUMO|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP},\
+	{0x1002, 0x9649, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_SUMO2|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP},\
 	{0x1002, 0x964a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_SUMO|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \
 	{0x1002, 0x964b, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_SUMO|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \
 	{0x1002, 0x964c, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_SUMO|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \

include/linux/auxvec.h

@@ -3,6 +3,6 @@
 
 #include <uapi/linux/auxvec.h>
 
-#define AT_VECTOR_SIZE_BASE 19 /* NEW_AUX_ENT entries in auxiliary table */
+#define AT_VECTOR_SIZE_BASE 20 /* NEW_AUX_ENT entries in auxiliary table */
   /* number of "#define AT_.*" above, minus {AT_NULL, AT_IGNORE, AT_NOTELF} */
 #endif /* _LINUX_AUXVEC_H */

include/linux/ceph/osd_client.h

@@ -145,7 +145,6 @@ struct ceph_osd_request {
 	s32               r_reply_op_result[CEPH_OSD_MAX_OP];
 	int               r_got_reply;
 	int		  r_linger;
-	int		  r_completed;
 
 	struct ceph_osd_client *r_osdc;
 	struct kref       r_kref;
@@ -336,6 +335,8 @@ extern int ceph_osdc_wait_request(struct ceph_osd_client *osdc,
 				  struct ceph_osd_request *req);
 extern void ceph_osdc_sync(struct ceph_osd_client *osdc);
 
+extern void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc);
+
 extern int ceph_osdc_readpages(struct ceph_osd_client *osdc,
 			       struct ceph_vino vino,
 			       struct ceph_file_layout *layout,

include/linux/libata.h

@@ -399,6 +399,7 @@ enum {
 	ATA_HORKAGE_BROKEN_FPDMA_AA	= (1 << 15),	/* skip AA */
 	ATA_HORKAGE_DUMP_ID	= (1 << 16),	/* dump IDENTIFY data */
 	ATA_HORKAGE_MAX_SEC_LBA48 = (1 << 17),	/* Set max sects to 65535 */
+	ATA_HORKAGE_ATAPI_DMADIR = (1 << 18),	/* device requires dmadir */
 
 	 /* DMA mask for user DMA control: User visible values; DO NOT
 	    renumber */

include/linux/mm_types.h

@@ -437,6 +437,14 @@ struct mm_struct {
 	 * a different node than Make PTE Scan Go Now.
 	 */
 	int first_nid;
+#endif
+#if defined(CONFIG_NUMA_BALANCING) || defined(CONFIG_COMPACTION)
+	/*
+	 * An operation with batched TLB flushing is going on. Anything that
+	 * can move process memory needs to flush the TLB when moving a
+	 * PROT_NONE or PROT_NUMA mapped page.
+	 */
+	bool tlb_flush_pending;
 #endif
 	struct uprobes_state uprobes_state;
 };
@@ -458,4 +466,45 @@ static inline cpumask_t *mm_cpumask(struct mm_struct *mm)
 	return mm->cpu_vm_mask_var;
 }
 
+#if defined(CONFIG_NUMA_BALANCING) || defined(CONFIG_COMPACTION)
+/*
+ * Memory barriers to keep this state in sync are graciously provided by
+ * the page table locks, outside of which no page table modifications happen.
+ * The barriers below prevent the compiler from re-ordering the instructions
+ * around the memory barriers that are already present in the code.
+ */
+static inline bool mm_tlb_flush_pending(struct mm_struct *mm)
+{
+	barrier();
+	return mm->tlb_flush_pending;
+}
+static inline void set_tlb_flush_pending(struct mm_struct *mm)
+{
+	mm->tlb_flush_pending = true;
+
+	/*
+	 * Guarantee that the tlb_flush_pending store does not leak into the
+	 * critical section updating the page tables
+	 */
+	smp_mb__before_spinlock();
+}
+/* Clearing is done after a TLB flush, which also provides a barrier. */
+static inline void clear_tlb_flush_pending(struct mm_struct *mm)
+{
+	barrier();
+	mm->tlb_flush_pending = false;
+}
+#else
+static inline bool mm_tlb_flush_pending(struct mm_struct *mm)
+{
+	return false;
+}
+static inline void set_tlb_flush_pending(struct mm_struct *mm)
+{
+}
+static inline void clear_tlb_flush_pending(struct mm_struct *mm)
+{
+}
+#endif
+
 #endif /* _LINUX_MM_TYPES_H */

include/linux/spinlock.h

@@ -117,9 +117,17 @@ do {								\
 #endif /*arch_spin_is_contended*/
 #endif
 
-/* The lock does not imply full memory barrier. */
+/*
-#ifndef ARCH_HAS_SMP_MB_AFTER_LOCK
+ * Despite its name it doesn't necessarily has to be a full barrier.
-static inline void smp_mb__after_lock(void) { smp_mb(); }
+ * It should only guarantee that a STORE before the critical section
+ * can not be reordered with a LOAD inside this section.
+ * spin_lock() is the one-way barrier, this LOAD can not escape out
+ * of the region. So the default implementation simply ensures that
+ * a STORE can not move into the critical section, smp_wmb() should
+ * serialize it with another STORE done by spin_lock().
+ */
+#ifndef smp_mb__before_spinlock
+#define smp_mb__before_spinlock()	smp_wmb()
 #endif
 
 /**

include/target/target_core_base.h

@@ -614,6 +614,7 @@ struct se_dev_attrib {
 	u32		unmap_granularity;
 	u32		unmap_granularity_alignment;
 	u32		max_write_same_len;
+	u32		max_bytes_per_io;
 	struct se_device *da_dev;
 	struct config_group da_group;
 };

kernel/fork.c

@@ -561,6 +561,7 @@ static struct mm_struct *mm_init(struct mm_struct *mm, struct task_struct *p)
 	mm->cached_hole_size = ~0UL;
 	mm_init_aio(mm);
 	mm_init_owner(mm, p);
+	clear_tlb_flush_pending(mm);
 
 	if (likely(!mm_alloc_pgd(mm))) {
 		mm->def_flags = 0;

kernel/freezer.c

@@ -19,6 +19,12 @@ EXPORT_SYMBOL(system_freezing_cnt);
 bool pm_freezing;
 bool pm_nosig_freezing;
 
+/*
+ * Temporary export for the deadlock workaround in ata_scsi_hotplug().
+ * Remove once the hack becomes unnecessary.
+ */
+EXPORT_SYMBOL_GPL(pm_freezing);
+
 /* protects freezing and frozen transitions */
 static DEFINE_SPINLOCK(freezer_lock);
 

kernel/sched/core.c

@@ -1488,7 +1488,13 @@ try_to_wake_up(struct task_struct *p, unsigned int state, int wake_flags)
 	unsigned long flags;
 	int cpu, success = 0;
 
-	smp_wmb();
+	/*
+	 * If we are going to wake up a thread waiting for CONDITION we
+	 * need to ensure that CONDITION=1 done by the caller can not be
+	 * reordered with p->state check below. This pairs with mb() in
+	 * set_current_state() the waiting thread does.
+	 */
+	smp_mb__before_spinlock();
 	raw_spin_lock_irqsave(&p->pi_lock, flags);
 	if (!(p->state & state))
 		goto out;
@@ -2995,6 +3001,12 @@ need_resched:
 	if (sched_feat(HRTICK))
 		hrtick_clear(rq);
 
+	/*
+	 * Make sure that signal_pending_state()->signal_pending() below
+	 * can't be reordered with __set_current_state(TASK_INTERRUPTIBLE)
+	 * done by the caller to avoid the race with signal_wake_up().
+	 */
+	smp_mb__before_spinlock();
 	raw_spin_lock_irq(&rq->lock);
 
 	switch_count = &prev->nivcsw;

kernel/sched/fair.c

@@ -936,6 +936,13 @@ void task_numa_work(struct callback_head *work)
 		if (vma->vm_end - vma->vm_start < HPAGE_SIZE)
 			continue;
 
+		/*
+		 * Skip inaccessible VMAs to avoid any confusion between
+		 * PROT_NONE and NUMA hinting ptes
+		 */
+		if (!(vma->vm_flags & (VM_READ | VM_EXEC | VM_WRITE)))
+			continue;
+
 		do {
 			start = max(start, vma->vm_start);
 			end = ALIGN(start + (pages << PAGE_SHIFT), HPAGE_SIZE);

kernel/sched/rt.c

@@ -924,6 +924,13 @@ inc_rt_prio_smp(struct rt_rq *rt_rq, int prio, int prev_prio)
 {
 	struct rq *rq = rq_of_rt_rq(rt_rq);
 
+#ifdef CONFIG_RT_GROUP_SCHED
+	/*
+	 * Change rq's cpupri only if rt_rq is the top queue.
+	 */
+	if (&rq->rt != rt_rq)
+		return;
+#endif
 	if (rq->online && prio < prev_prio)
 		cpupri_set(&rq->rd->cpupri, rq->cpu, prio);
 }
@@ -933,6 +940,13 @@ dec_rt_prio_smp(struct rt_rq *rt_rq, int prio, int prev_prio)
 {
 	struct rq *rq = rq_of_rt_rq(rt_rq);
 
+#ifdef CONFIG_RT_GROUP_SCHED
+	/*
+	 * Change rq's cpupri only if rt_rq is the top queue.
+	 */
+	if (&rq->rt != rt_rq)
+		return;
+#endif
 	if (rq->online && rt_rq->highest_prio.curr != prev_prio)
 		cpupri_set(&rq->rd->cpupri, rq->cpu, rt_rq->highest_prio.curr);
 }

kernel/trace/ftrace.c

@@ -750,7 +750,7 @@ static int ftrace_profile_init(void)
 	int cpu;
 	int ret = 0;
 
-	for_each_online_cpu(cpu) {
+	for_each_possible_cpu(cpu) {
 		ret = ftrace_profile_init_cpu(cpu);
 		if (ret)
 			break;

mm/compaction.c

@@ -134,6 +134,10 @@ static void update_pageblock_skip(struct compact_control *cc,
 			bool migrate_scanner)
 {
 	struct zone *zone = cc->zone;
+
+	if (cc->ignore_skip_hint)
+		return;
+
 	if (!page)
 		return;
 

mm/fremap.c

@@ -203,9 +203,10 @@ get_write_lock:
 		if (mapping_cap_account_dirty(mapping)) {
 			unsigned long addr;
 			struct file *file = get_file(vma->vm_file);
+			/* mmap_region may free vma; grab the info now */
+			vm_flags = vma->vm_flags;
 
-			addr = mmap_region(file, start, size,
+			addr = mmap_region(file, start, size, vm_flags, pgoff);
-					vma->vm_flags, pgoff);
 			fput(file);
 			if (IS_ERR_VALUE(addr)) {
 				err = addr;
@@ -213,7 +214,7 @@ get_write_lock:
 				BUG_ON(addr != start);
 				err = 0;
 			}
-			goto out;
+			goto out_freed;
 		}
 		mutex_lock(&mapping->i_mmap_mutex);
 		flush_dcache_mmap_lock(mapping);
@@ -248,6 +249,7 @@ get_write_lock:
 out:
 	if (vma)
 		vm_flags = vma->vm_flags;
+out_freed:
 	if (likely(!has_write_lock))
 		up_read(&mm->mmap_sem);
 	else

mm/huge_memory.c

@@ -1344,6 +1344,20 @@ int do_huge_pmd_numa_page(struct mm_struct *mm, struct vm_area_struct *vma,
 		goto out_unlock;
 	}
 
+	/* Bail if we fail to protect against THP splits for any reason */
+	if (unlikely(!anon_vma)) {
+		put_page(page);
+		page_nid = -1;
+		goto clear_pmdnuma;
+	}
+
+	/*
+	 * The page_table_lock above provides a memory barrier
+	 * with change_protection_range.
+	 */
+	if (mm_tlb_flush_pending(mm))
+		flush_tlb_range(vma, haddr, haddr + HPAGE_PMD_SIZE);
+
 	/*
 	 * Migrate the THP to the requested node, returns with page unlocked
 	 * and pmd_numa cleared.

mm/memcontrol.c

@@ -385,7 +385,7 @@ struct mem_cgroup {
 static size_t memcg_size(void)
 {
 	return sizeof(struct mem_cgroup) +
-		nr_node_ids * sizeof(struct mem_cgroup_per_node);
+		nr_node_ids * sizeof(struct mem_cgroup_per_node *);
 }
 
 /* internal only representation about the status of kmem accounting. */

mm/memory-failure.c

@@ -936,6 +936,16 @@ static int hwpoison_user_mappings(struct page *p, unsigned long pfn,
 				BUG_ON(!PageHWPoison(p));
 				return SWAP_FAIL;
 			}
+			/*
+			 * We pinned the head page for hwpoison handling,
+			 * now we split the thp and we are interested in
+			 * the hwpoisoned raw page, so move the refcount
+			 * to it.
+			 */
+			if (hpage != p) {
+				put_page(hpage);
+				get_page(p);
+			}
 			/* THP is split, so ppage should be the real poisoned page. */
 			ppage = p;
 		}