Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6

24 files changed, 180 insertions, 78 deletions

diff --git a/include/asm-arm/arch-s3c2410/spi.h b/include/asm-arm/arch-s3c2410/spi.h
index 7ca0ed9..352d338 100644
--- a/include/asm-arm/arch-s3c2410/spi.h
+++ b/include/asm-arm/arch-s3c2410/spi.h
@@ -15,6 +15,7 @@
 
 struct s3c2410_spi_info {
 	unsigned long		 pin_cs;	/* simple gpio cs */
+	unsigned int		 num_cs;	/* total chipselects */
 
 	void (*set_cs)(struct s3c2410_spi_info *spi, int cs, int pol);
 };
diff --git a/include/asm-frv/mem-layout.h b/include/asm-frv/mem-layout.h
index 8353225..734a1d0 100644
--- a/include/asm-frv/mem-layout.h
+++ b/include/asm-frv/mem-layout.h
@@ -60,7 +60,7 @@
  */
 #define BRK_BASE			__UL(2 * 1024 * 1024 + PAGE_SIZE)
 #define STACK_TOP			__UL(2 * 1024 * 1024)
-#define STACK_TOP_MAX	STACK_TOP
+#define STACK_TOP_MAX			__UL(0xc0000000)
 
 /* userspace process size */
 #ifdef CONFIG_MMU
diff --git a/include/asm-frv/pgtable.h b/include/asm-frv/pgtable.h
index 6c0682e..4e21904 100644
--- a/include/asm-frv/pgtable.h
+++ b/include/asm-frv/pgtable.h
@@ -507,13 +507,22 @@ static inline int pte_file(pte_t pte)
  */
 static inline void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t pte)
 {
+	struct mm_struct *mm;
 	unsigned long ampr;
-	pgd_t *pge = pgd_offset(current->mm, address);
-	pud_t *pue = pud_offset(pge, address);
-	pmd_t *pme = pmd_offset(pue, address);
 
-	ampr = pme->ste[0] & 0xffffff00;
-	ampr |= xAMPRx_L | xAMPRx_SS_16Kb | xAMPRx_S | xAMPRx_C | xAMPRx_V;
+	mm = current->mm;
+	if (mm) {
+		pgd_t *pge = pgd_offset(mm, address);
+		pud_t *pue = pud_offset(pge, address);
+		pmd_t *pme = pmd_offset(pue, address);
+
+		ampr = pme->ste[0] & 0xffffff00;
+		ampr |= xAMPRx_L | xAMPRx_SS_16Kb | xAMPRx_S | xAMPRx_C |
+			xAMPRx_V;
+	} else {
+		address = ULONG_MAX;
+		ampr = 0;
+	}
 
 	asm volatile("movgs %0,scr0\n"
 		     "movgs %0,scr1\n"
diff --git a/include/asm-frv/spr-regs.h b/include/asm-frv/spr-regs.h
index c2a541e..01e6af5 100644
--- a/include/asm-frv/spr-regs.h
+++ b/include/asm-frv/spr-regs.h
@@ -99,9 +99,23 @@
 #define TBR_TT_TRAP1		(0x81 << 4)
 #define TBR_TT_TRAP2		(0x82 << 4)
 #define TBR_TT_TRAP3		(0x83 << 4)
+#define TBR_TT_TRAP120		(0xf8 << 4)
+#define TBR_TT_TRAP121		(0xf9 << 4)
+#define TBR_TT_TRAP122		(0xfa << 4)
+#define TBR_TT_TRAP123		(0xfb << 4)
+#define TBR_TT_TRAP124		(0xfc << 4)
+#define TBR_TT_TRAP125		(0xfd << 4)
 #define TBR_TT_TRAP126		(0xfe << 4)
 #define TBR_TT_BREAK		(0xff << 4)
 
+#define TBR_TT_ATOMIC_CMPXCHG32	TBR_TT_TRAP120
+#define TBR_TT_ATOMIC_XCHG32	TBR_TT_TRAP121
+#define TBR_TT_ATOMIC_XOR	TBR_TT_TRAP122
+#define TBR_TT_ATOMIC_OR	TBR_TT_TRAP123
+#define TBR_TT_ATOMIC_AND	TBR_TT_TRAP124
+#define TBR_TT_ATOMIC_SUB	TBR_TT_TRAP125
+#define TBR_TT_ATOMIC_ADD	TBR_TT_TRAP126
+
 #define __get_TBR()	({ unsigned long x; asm volatile("movsg tbr,%0" : "=r"(x)); x; })
 
 /*
diff --git a/include/asm-frv/system.h b/include/asm-frv/system.h
index 2c57f47..30a67a9 100644
--- a/include/asm-frv/system.h
+++ b/include/asm-frv/system.h
@@ -179,14 +179,23 @@ do {							\
 #define mb()			asm volatile ("membar" : : :"memory")
 #define rmb()			asm volatile ("membar" : : :"memory")
 #define wmb()			asm volatile ("membar" : : :"memory")
-#define set_mb(var, value)	do { var = value; mb(); } while (0)
+#define read_barrier_depends()	barrier()
 
-#define smp_mb()		mb()
-#define smp_rmb()		rmb()
-#define smp_wmb()		wmb()
-
-#define read_barrier_depends()		do {} while(0)
+#ifdef CONFIG_SMP
+#define smp_mb()			mb()
+#define smp_rmb()			rmb()
+#define smp_wmb()			wmb()
 #define smp_read_barrier_depends()	read_barrier_depends()
+#define set_mb(var, value) \
+	do { xchg(&var, (value)); } while (0)
+#else
+#define smp_mb()			barrier()
+#define smp_rmb()			barrier()
+#define smp_wmb()			barrier()
+#define smp_read_barrier_depends()	do {} while(0)
+#define set_mb(var, value) \
+	do { var = (value); barrier(); } while (0)
+#endif
 
 #define HARD_RESET_NOW()			\
 do {						\
diff --git a/include/asm-mips/cacheflush.h b/include/asm-mips/cacheflush.h
index 01e7ead..d5c0f2f 100644
--- a/include/asm-mips/cacheflush.h
+++ b/include/asm-mips/cacheflush.h
@@ -63,8 +63,22 @@ static inline void flush_icache_page(struct vm_area_struct *vma,
 }
 
 extern void (*flush_icache_range)(unsigned long start, unsigned long end);
-#define flush_cache_vmap(start, end)		flush_cache_all()
-#define flush_cache_vunmap(start, end)		flush_cache_all()
+
+extern void (*__flush_cache_vmap)(void);
+
+static inline void flush_cache_vmap(unsigned long start, unsigned long end)
+{
+	if (cpu_has_dc_aliases)
+		__flush_cache_vmap();
+}
+
+extern void (*__flush_cache_vunmap)(void);
+
+static inline void flush_cache_vunmap(unsigned long start, unsigned long end)
+{
+	if (cpu_has_dc_aliases)
+		__flush_cache_vunmap();
+}
 
 extern void copy_to_user_page(struct vm_area_struct *vma,
 	struct page *page, unsigned long vaddr, void *dst, const void *src,
diff --git a/include/asm-mips/mach-au1x00/au1xxx_ide.h b/include/asm-mips/mach-au1x00/au1xxx_ide.h
index e4fe26c..89655c0 100644
--- a/include/asm-mips/mach-au1x00/au1xxx_ide.h
+++ b/include/asm-mips/mach-au1x00/au1xxx_ide.h
@@ -122,24 +122,6 @@ static const struct drive_list_entry dma_black_list [] = {
 };
 #endif
 
-/* function prototyping */
-u8 auide_inb(unsigned long port);
-u16 auide_inw(unsigned long port);
-u32 auide_inl(unsigned long port);
-void auide_insw(unsigned long port, void *addr, u32 count);
-void auide_insl(unsigned long port, void *addr, u32 count);
-void auide_outb(u8 addr, unsigned long port);
-void auide_outbsync(ide_drive_t *drive, u8 addr, unsigned long port);
-void auide_outw(u16 addr, unsigned long port);
-void auide_outl(u32 addr, unsigned long port);
-void auide_outsw(unsigned long port, void *addr, u32 count);
-void auide_outsl(unsigned long port, void *addr, u32 count);
-static void auide_tune_drive(ide_drive_t *drive, byte pio);
-static int auide_tune_chipset(ide_drive_t *drive, u8 speed);
-static int auide_ddma_init( _auide_hwif *auide );
-static void auide_setup_ports(hw_regs_t *hw, _auide_hwif *ahwif);
-int __init auide_probe(void);
-
 /*******************************************************************************
 * PIO Mode timing calculation :                                                *
 *                                                                              *
diff --git a/include/asm-mips/mach-db1x00/db1200.h b/include/asm-mips/mach-db1x00/db1200.h
index a6bdac6..d2e28e6 100644
--- a/include/asm-mips/mach-db1x00/db1200.h
+++ b/include/asm-mips/mach-db1x00/db1200.h
@@ -173,8 +173,8 @@ static BCSR * const bcsr = (BCSR *)BCSR_KSEG1_ADDR;
 #define AU1XXX_SMC91111_IRQ			DB1200_ETH_INT
 
 #define AU1XXX_ATA_PHYS_ADDR		(0x18800000)
-#define AU1XXX_ATA_PHYS_LEN			(0x100)
-#define AU1XXX_ATA_REG_OFFSET	(5)
+#define AU1XXX_ATA_REG_OFFSET		(5)
+#define AU1XXX_ATA_PHYS_LEN		(16 << AU1XXX_ATA_REG_OFFSET)
 #define AU1XXX_ATA_INT			DB1200_IDE_INT
 #define AU1XXX_ATA_DDMA_REQ		DSCR_CMD0_DMA_REQ1;
 #define AU1XXX_ATA_RQSIZE		128
diff --git a/include/asm-mips/mach-pb1x00/pb1200.h b/include/asm-mips/mach-pb1x00/pb1200.h
index ed5fd73..edaa489 100644
--- a/include/asm-mips/mach-pb1x00/pb1200.h
+++ b/include/asm-mips/mach-pb1x00/pb1200.h
@@ -186,8 +186,8 @@ static BCSR * const bcsr = (BCSR *)BCSR_KSEG1_ADDR;
 #define AU1XXX_SMC91111_IRQ			PB1200_ETH_INT
 
 #define AU1XXX_ATA_PHYS_ADDR		(0x0C800000)
-#define AU1XXX_ATA_PHYS_LEN			(0x100)
-#define AU1XXX_ATA_REG_OFFSET	(5)
+#define AU1XXX_ATA_REG_OFFSET		(5)
+#define AU1XXX_ATA_PHYS_LEN		(16 << AU1XXX_ATA_REG_OFFSET)
 #define AU1XXX_ATA_INT			PB1200_IDE_INT
 #define AU1XXX_ATA_DDMA_REQ		DSCR_CMD0_DMA_REQ1;
 #define AU1XXX_ATA_RQSIZE		128
@@ -245,7 +245,7 @@ enum external_pb1200_ints {
 	PB1200_SD1_INSERT_INT,
 	PB1200_SD1_EJECT_INT,
 
-	PB1200_INT_END			(PB1200_INT_BEGIN + 15)
+	PB1200_INT_END		= PB1200_INT_BEGIN + 15
 };
 
 /* For drivers/pcmcia/au1000_db1x00.c */
diff --git a/include/asm-um/tlb.h b/include/asm-um/tlb.h
index 39fc475..5240fa1 100644
--- a/include/asm-um/tlb.h
+++ b/include/asm-um/tlb.h
@@ -1,6 +1,7 @@
 #ifndef __UM_TLB_H
 #define __UM_TLB_H
 
+#include <linux/pagemap.h>
 #include <linux/swap.h>
 #include <asm/percpu.h>
 #include <asm/pgalloc.h>
diff --git a/include/asm-x86/irqflags.h b/include/asm-x86/irqflags.h
index 92021c1..0e22924 100644
--- a/include/asm-x86/irqflags.h
+++ b/include/asm-x86/irqflags.h
@@ -70,6 +70,26 @@ static inline void raw_local_irq_restore(unsigned long flags)
 	native_restore_fl(flags);
 }
 
+#ifdef CONFIG_X86_VSMP
+
+/*
+ * Interrupt control for the VSMP architecture:
+ */
+
+static inline void raw_local_irq_disable(void)
+{
+	unsigned long flags = __raw_local_save_flags();
+	raw_local_irq_restore((flags & ~X86_EFLAGS_IF) | X86_EFLAGS_AC);
+}
+
+static inline void raw_local_irq_enable(void)
+{
+	unsigned long flags = __raw_local_save_flags();
+	raw_local_irq_restore((flags | X86_EFLAGS_IF) & (~X86_EFLAGS_AC));
+}
+
+#else
+
 static inline void raw_local_irq_disable(void)
 {
 	native_irq_disable();
@@ -80,6 +100,8 @@ static inline void raw_local_irq_enable(void)
 	native_irq_enable();
 }
 
+#endif
+
 /*
  * Used in the idle loop; sti takes one instruction cycle
  * to complete:
@@ -137,10 +159,17 @@ static inline unsigned long __raw_local_irq_save(void)
 #define raw_local_irq_save(flags) \
 		do { (flags) = __raw_local_irq_save(); } while (0)
 
+#ifdef CONFIG_X86_VSMP
+static inline int raw_irqs_disabled_flags(unsigned long flags)
+{
+	return !(flags & X86_EFLAGS_IF) || (flags & X86_EFLAGS_AC);
+}
+#else
 static inline int raw_irqs_disabled_flags(unsigned long flags)
 {
 	return !(flags & X86_EFLAGS_IF);
 }
+#endif
 
 static inline int raw_irqs_disabled(void)
 {
diff --git a/include/asm-x86/linkage.h b/include/asm-x86/linkage.h
index 31739c7..c048353 100644
--- a/include/asm-x86/linkage.h
+++ b/include/asm-x86/linkage.h
@@ -8,12 +8,45 @@
 
 #ifdef CONFIG_X86_32
 #define asmlinkage CPP_ASMLINKAGE __attribute__((regparm(0)))
-#define prevent_tail_call(ret) __asm__ ("" : "=r" (ret) : "0" (ret))
 /*
  * For 32-bit UML - mark functions implemented in assembly that use
  * regparm input parameters:
  */
 #define asmregparm __attribute__((regparm(3)))
+
+/*
+ * Make sure the compiler doesn't do anything stupid with the
+ * arguments on the stack - they are owned by the *caller*, not
+ * the callee. This just fools gcc into not spilling into them,
+ * and keeps it from doing tailcall recursion and/or using the
+ * stack slots for temporaries, since they are live and "used"
+ * all the way to the end of the function.
+ *
+ * NOTE! On x86-64, all the arguments are in registers, so this
+ * only matters on a 32-bit kernel.
+ */
+#define asmlinkage_protect(n, ret, args...) \
+	__asmlinkage_protect##n(ret, ##args)
+#define __asmlinkage_protect_n(ret, args...) \
+	__asm__ __volatile__ ("" : "=r" (ret) : "0" (ret), ##args)
+#define __asmlinkage_protect0(ret) \
+	__asmlinkage_protect_n(ret)
+#define __asmlinkage_protect1(ret, arg1) \
+	__asmlinkage_protect_n(ret, "g" (arg1))
+#define __asmlinkage_protect2(ret, arg1, arg2) \
+	__asmlinkage_protect_n(ret, "g" (arg1), "g" (arg2))
+#define __asmlinkage_protect3(ret, arg1, arg2, arg3) \
+	__asmlinkage_protect_n(ret, "g" (arg1), "g" (arg2), "g" (arg3))
+#define __asmlinkage_protect4(ret, arg1, arg2, arg3, arg4) \
+	__asmlinkage_protect_n(ret, "g" (arg1), "g" (arg2), "g" (arg3), \
+			      "g" (arg4))
+#define __asmlinkage_protect5(ret, arg1, arg2, arg3, arg4, arg5) \
+	__asmlinkage_protect_n(ret, "g" (arg1), "g" (arg2), "g" (arg3), \
+			      "g" (arg4), "g" (arg5))
+#define __asmlinkage_protect6(ret, arg1, arg2, arg3, arg4, arg5, arg6) \
+	__asmlinkage_protect_n(ret, "g" (arg1), "g" (arg2), "g" (arg3), \
+			      "g" (arg4), "g" (arg5), "g" (arg6))
+
 #endif
 
 #ifdef CONFIG_X86_ALIGNMENT_16
diff --git a/include/asm-x86/nops.h b/include/asm-x86/nops.h
index e3b2bce..b3930ae 100644
--- a/include/asm-x86/nops.h
+++ b/include/asm-x86/nops.h
@@ -73,16 +73,7 @@
 #define P6_NOP7	".byte 0x0f,0x1f,0x80,0,0,0,0\n"
 #define P6_NOP8	".byte 0x0f,0x1f,0x84,0x00,0,0,0,0\n"
 
-#if defined(CONFIG_MK8)
-#define ASM_NOP1 K8_NOP1
-#define ASM_NOP2 K8_NOP2
-#define ASM_NOP3 K8_NOP3
-#define ASM_NOP4 K8_NOP4
-#define ASM_NOP5 K8_NOP5
-#define ASM_NOP6 K8_NOP6
-#define ASM_NOP7 K8_NOP7
-#define ASM_NOP8 K8_NOP8
-#elif defined(CONFIG_MK7)
+#if defined(CONFIG_MK7)
 #define ASM_NOP1 K7_NOP1
 #define ASM_NOP2 K7_NOP2
 #define ASM_NOP3 K7_NOP3
@@ -100,6 +91,15 @@
 #define ASM_NOP6 P6_NOP6
 #define ASM_NOP7 P6_NOP7
 #define ASM_NOP8 P6_NOP8
+#elif defined(CONFIG_X86_64)
+#define ASM_NOP1 K8_NOP1
+#define ASM_NOP2 K8_NOP2
+#define ASM_NOP3 K8_NOP3
+#define ASM_NOP4 K8_NOP4
+#define ASM_NOP5 K8_NOP5
+#define ASM_NOP6 K8_NOP6
+#define ASM_NOP7 K8_NOP7
+#define ASM_NOP8 K8_NOP8
 #else
 #define ASM_NOP1 GENERIC_NOP1
 #define ASM_NOP2 GENERIC_NOP2
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index 028ba3b..a6a6035 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -256,6 +256,7 @@ struct cgroup_subsys {
 	void (*bind)(struct cgroup_subsys *ss, struct cgroup *root);
 	int subsys_id;
 	int active;
+	int disabled;
 	int early_init;
 #define MAX_CGROUP_TYPE_NAMELEN 32
 	const char *name;
diff --git a/include/linux/hpet.h b/include/linux/hpet.h
index 9cd94bf..2dc29ce 100644
--- a/include/linux/hpet.h
+++ b/include/linux/hpet.h
@@ -64,7 +64,7 @@ struct hpet {
  */
 
 #define	Tn_INT_ROUTE_CAP_MASK		(0xffffffff00000000ULL)
-#define	Tn_INT_ROUTE_CAP_SHIFT		(32UL)
+#define	Tn_INI_ROUTE_CAP_SHIFT		(32UL)
 #define	Tn_FSB_INT_DELCAP_MASK		(0x8000UL)
 #define	Tn_FSB_INT_DELCAP_SHIFT		(15)
 #define	Tn_FSB_EN_CNF_MASK		(0x4000UL)
diff --git a/include/linux/iocontext.h b/include/linux/iocontext.h
index cac4b36..2b7a118 100644
--- a/include/linux/iocontext.h
+++ b/include/linux/iocontext.h
@@ -91,8 +91,10 @@ static inline struct io_context *ioc_task_link(struct io_context *ioc)
 	 * if ref count is zero, don't allow sharing (ioc is going away, it's
 	 * a race).
 	 */
-	if (ioc && atomic_inc_not_zero(&ioc->refcount))
+	if (ioc && atomic_inc_not_zero(&ioc->refcount)) {
+		atomic_inc(&ioc->nr_tasks);
 		return ioc;
+	}
 
 	return NULL;
 }
diff --git a/include/linux/libata.h b/include/linux/libata.h
index b064bfe..37ee881 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -350,7 +350,8 @@ enum {
 	ATAPI_READ		= 0,		/* READs */
 	ATAPI_WRITE		= 1,		/* WRITEs */
 	ATAPI_READ_CD		= 2,		/* READ CD [MSF] */
-	ATAPI_MISC		= 3,		/* the rest */
+	ATAPI_PASS_THRU		= 3,		/* SAT pass-thru */
+	ATAPI_MISC		= 4,		/* the rest */
 };
 
 enum ata_xfer_mask {
@@ -849,6 +850,7 @@ extern unsigned int ata_dev_try_classify(struct ata_device *dev, int present,
  */
 extern void ata_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
 extern void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
+extern int atapi_cmd_type(u8 opcode);
 extern void ata_tf_to_fis(const struct ata_taskfile *tf,
 			  u8 pmp, int is_cmd, u8 *fis);
 extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf);
@@ -1379,27 +1381,6 @@ static inline int ata_try_flush_cache(const struct ata_device *dev)
 	       ata_id_has_flush_ext(dev->id);
 }
 
-static inline int atapi_cmd_type(u8 opcode)
-{
-	switch (opcode) {
-	case GPCMD_READ_10:
-	case GPCMD_READ_12:
-		return ATAPI_READ;
-
-	case GPCMD_WRITE_10:
-	case GPCMD_WRITE_12:
-	case GPCMD_WRITE_AND_VERIFY_10:
-		return ATAPI_WRITE;
-
-	case GPCMD_READ_CD:
-	case GPCMD_READ_CD_MSF:
-		return ATAPI_READ_CD;
-
-	default:
-		return ATAPI_MISC;
-	}
-}
-
 static inline unsigned int ac_err_mask(u8 status)
 {
 	if (status & (ATA_BUSY | ATA_DRQ))
diff --git a/include/linux/linkage.h b/include/linux/linkage.h
index 0592936..2119610 100644
--- a/include/linux/linkage.h
+++ b/include/linux/linkage.h
@@ -17,8 +17,24 @@
 # define asmregparm
 #endif
 
-#ifndef prevent_tail_call
-# define prevent_tail_call(ret) do { } while (0)
+/*
+ * This is used by architectures to keep arguments on the stack
+ * untouched by the compiler by keeping them live until the end.
+ * The argument stack may be owned by the assembly-language
+ * caller, not the callee, and gcc doesn't always understand
+ * that.
+ *
+ * We have the return value, and a maximum of six arguments.
+ *
+ * This should always be followed by a "return ret" for the
+ * protection to work (ie no more work that the compiler might
+ * end up needing stack temporaries for).
+ */
+/* Assembly files may be compiled with -traditional .. */
+#ifndef __ASSEMBLY__
+#ifndef asmlinkage_protect
+# define asmlinkage_protect(n, ret, args...)	do { } while (0)
+#endif
 #endif
 
 #ifndef __ALIGN
diff --git a/include/linux/mbcache.h b/include/linux/mbcache.h
index 99e044b..a09b84e 100644
--- a/include/linux/mbcache.h
+++ b/include/linux/mbcache.h
@@ -34,7 +34,7 @@ void mb_cache_destroy(struct mb_cache *);
 
 /* Functions on cache entries */
 
-struct mb_cache_entry *mb_cache_entry_alloc(struct mb_cache *);
+struct mb_cache_entry *mb_cache_entry_alloc(struct mb_cache *, gfp_t);
 int mb_cache_entry_insert(struct mb_cache_entry *, struct block_device *,
 			  sector_t, unsigned int[]);
 void mb_cache_entry_release(struct mb_cache_entry *);
diff --git a/include/linux/pnp.h b/include/linux/pnp.h
index 29dd558..b2f05c2 100644
--- a/include/linux/pnp.h
+++ b/include/linux/pnp.h
@@ -175,7 +175,7 @@ static inline void pnp_set_card_drvdata(struct pnp_card_link *pcard, void *data)
 struct pnp_dev {
 	struct device dev;		/* Driver Model device interface */
 	u64 dma_mask;
-	unsigned char number;		/* used as an index, must be unique */
+	unsigned int number;		/* used as an index, must be unique */
 	int status;
 
 	struct list_head global_list;	/* node in global list of devices */
diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h
index 576a5f7..1129ee0 100644
--- a/include/linux/spinlock.h
+++ b/include/linux/spinlock.h
@@ -341,6 +341,9 @@ static inline void double_spin_unlock(spinlock_t *l1, spinlock_t *l2,
  * atomic_dec_and_lock - lock on reaching reference count zero
  * @atomic: the atomic counter
  * @lock: the spinlock in question
+ *
+ * Decrements @atomic by 1.  If the result is 0, returns true and locks
+ * @lock.  Returns false for all other cases.
  */
 extern int _atomic_dec_and_lock(atomic_t *atomic, spinlock_t *lock);
 #define atomic_dec_and_lock(atomic, lock) \
diff --git a/include/linux/ssb/ssb.h b/include/linux/ssb/ssb.h
index 9f95afd..50dfd0d 100644
--- a/include/linux/ssb/ssb.h
+++ b/include/linux/ssb/ssb.h
@@ -137,6 +137,10 @@ struct ssb_device {
 	const struct ssb_bus_ops *ops;
 
 	struct device *dev;
+	/* Pointer to the device that has to be used for
+	 * any DMA related operation. */
+	struct device *dma_dev;
+
 	struct ssb_bus *bus;
 	struct ssb_device_id id;
 
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index 818ca1c..90c1c19 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -50,7 +50,7 @@ struct thermal_cooling_device_ops {
 };
 
 #define THERMAL_TRIPS_NONE -1
-#define THERMAL_MAX_TRIPS 10
+#define THERMAL_MAX_TRIPS 12
 #define THERMAL_NAME_LENGTH 20
 struct thermal_cooling_device {
 	int id;
diff --git a/include/linux/virtio.h b/include/linux/virtio.h
index 12c18ac..e7d1084 100644
--- a/include/linux/virtio.h
+++ b/include/linux/virtio.h
@@ -41,6 +41,8 @@ struct virtqueue
  *	Returns NULL or the "data" token handed to add_buf.
  * @disable_cb: disable callbacks
  *	vq: the struct virtqueue we're talking about.
+ *	Note that this is not necessarily synchronous, hence unreliable and only
+ *	useful as an optimization.
  * @enable_cb: restart callbacks after disable_cb.
  *	vq: the struct virtqueue we're talking about.
  *	This re-enables callbacks; it returns "false" if there are pending
@@ -48,7 +50,8 @@ struct virtqueue
  *	checking for more work, and enabling callbacks.
  *
  * Locking rules are straightforward: the driver is responsible for
- * locking.  No two operations may be invoked simultaneously.
+ * locking.  No two operations may be invoked simultaneously, with the exception
+ * of @disable_cb.
  *
  * All operations can be called in any context.
  */