Merge branch 'master' into for-next

9 files changed, 83 insertions, 69 deletions

diff --git a/include/asm-generic/atomic.h b/include/asm-generic/atomic.h
index c33749f95b3..058129e9b04 100644
--- a/include/asm-generic/atomic.h
+++ b/include/asm-generic/atomic.h
@@ -30,8 +30,7 @@
  * atomic_read - read atomic variable
  * @v: pointer of type atomic_t
  *
- * Atomically reads the value of @v.  Note that the guaranteed
- * useful range of an atomic_t is only 24 bits.
+ * Atomically reads the value of @v.
  */
 #define atomic_read(v)	(*(volatile int *)&(v)->counter)
 
@@ -40,8 +39,7 @@
  * @v: pointer of type atomic_t
  * @i: required value
  *
- * Atomically sets the value of @v to @i.  Note that the guaranteed
- * useful range of an atomic_t is only 24 bits.
+ * Atomically sets the value of @v to @i.
  */
 #define atomic_set(v, i) (((v)->counter) = (i))
 
@@ -53,7 +51,6 @@
  * @v: pointer of type atomic_t
  *
  * Atomically adds @i to @v and returns the result
- * Note that the guaranteed useful range of an atomic_t is only 24 bits.
  */
 static inline int atomic_add_return(int i, atomic_t *v)
 {
@@ -75,7 +72,6 @@ static inline int atomic_add_return(int i, atomic_t *v)
  * @v: pointer of type atomic_t
  *
  * Atomically subtracts @i from @v and returns the result
- * Note that the guaranteed useful range of an atomic_t is only 24 bits.
  */
 static inline int atomic_sub_return(int i, atomic_t *v)
 {
diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h
index 18c435d7c08..c2c9ba032d4 100644
--- a/include/asm-generic/bug.h
+++ b/include/asm-generic/bug.h
@@ -25,7 +25,10 @@ struct bug_entry {
 };
 #endif		/* __ASSEMBLY__ */
 
-#define BUGFLAG_WARNING	(1<<0)
+#define BUGFLAG_WARNING		(1 << 0)
+#define BUGFLAG_TAINT(taint)	(BUGFLAG_WARNING | ((taint) << 8))
+#define BUG_GET_TAINT(bug)	((bug)->flags >> 8)
+
 #endif	/* CONFIG_GENERIC_BUG */
 
 /*
@@ -56,17 +59,25 @@ struct bug_entry {
  * appear at runtime.  Use the versions with printk format strings
  * to provide better diagnostics.
  */
-#ifndef __WARN
+#ifndef __WARN_TAINT
 #ifndef __ASSEMBLY__
 extern void warn_slowpath_fmt(const char *file, const int line,
 		const char *fmt, ...) __attribute__((format(printf, 3, 4)));
+extern void warn_slowpath_fmt_taint(const char *file, const int line,
+				    unsigned taint, const char *fmt, ...)
+	__attribute__((format(printf, 4, 5)));
 extern void warn_slowpath_null(const char *file, const int line);
 #define WANT_WARN_ON_SLOWPATH
 #endif
 #define __WARN()		warn_slowpath_null(__FILE__, __LINE__)
 #define __WARN_printf(arg...)	warn_slowpath_fmt(__FILE__, __LINE__, arg)
+#define __WARN_printf_taint(taint, arg...)				\
+	warn_slowpath_fmt_taint(__FILE__, __LINE__, taint, arg)
 #else
+#define __WARN()		__WARN_TAINT(TAINT_WARN)
 #define __WARN_printf(arg...)	do { printk(arg); __WARN(); } while (0)
+#define __WARN_printf_taint(taint, arg...)				\
+	do { printk(arg); __WARN_TAINT(taint); } while (0)
 #endif
 
 #ifndef WARN_ON
@@ -87,6 +98,13 @@ extern void warn_slowpath_null(const char *file, const int line);
 })
 #endif
 
+#define WARN_TAINT(condition, taint, format...) ({			\
+	int __ret_warn_on = !!(condition);				\
+	if (unlikely(__ret_warn_on))					\
+		__WARN_printf_taint(taint, format);			\
+	unlikely(__ret_warn_on);					\
+})
+
 #else /* !CONFIG_BUG */
 #ifndef HAVE_ARCH_BUG
 #define BUG() do {} while(0)
@@ -110,6 +128,8 @@ extern void warn_slowpath_null(const char *file, const int line);
 })
 #endif
 
+#define WARN_TAINT(condition, taint, format...) WARN_ON(condition)
+
 #endif
 
 #define WARN_ON_ONCE(condition)	({				\
@@ -132,6 +152,16 @@ extern void warn_slowpath_null(const char *file, const int line);
 	unlikely(__ret_warn_once);				\
 })
 
+#define WARN_TAINT_ONCE(condition, taint, format...)	({	\
+	static bool __warned;					\
+	int __ret_warn_once = !!(condition);			\
+								\
+	if (unlikely(__ret_warn_once))				\
+		if (WARN_TAINT(!__warned, taint, format))	\
+			__warned = true;			\
+	unlikely(__ret_warn_once);				\
+})
+
 #define WARN_ON_RATELIMIT(condition, state)			\
 		WARN_ON((condition) && __ratelimit(state))
 
diff --git a/include/asm-generic/dma-mapping-common.h b/include/asm-generic/dma-mapping-common.h
index 69206957b72..0c80bb38773 100644
--- a/include/asm-generic/dma-mapping-common.h
+++ b/include/asm-generic/dma-mapping-common.h
@@ -123,15 +123,7 @@ static inline void dma_sync_single_range_for_cpu(struct device *dev,
 						 size_t size,
 						 enum dma_data_direction dir)
 {
-	struct dma_map_ops *ops = get_dma_ops(dev);
-
-	BUG_ON(!valid_dma_direction(dir));
-	if (ops->sync_single_range_for_cpu) {
-		ops->sync_single_range_for_cpu(dev, addr, offset, size, dir);
-		debug_dma_sync_single_range_for_cpu(dev, addr, offset, size, dir);
-
-	} else
-		dma_sync_single_for_cpu(dev, addr + offset, size, dir);
+	dma_sync_single_for_cpu(dev, addr + offset, size, dir);
 }
 
 static inline void dma_sync_single_range_for_device(struct device *dev,
@@ -140,15 +132,7 @@ static inline void dma_sync_single_range_for_device(struct device *dev,
 						    size_t size,
 						    enum dma_data_direction dir)
 {
-	struct dma_map_ops *ops = get_dma_ops(dev);
-
-	BUG_ON(!valid_dma_direction(dir));
-	if (ops->sync_single_range_for_device) {
-		ops->sync_single_range_for_device(dev, addr, offset, size, dir);
-		debug_dma_sync_single_range_for_device(dev, addr, offset, size, dir);
-
-	} else
-		dma_sync_single_for_device(dev, addr + offset, size, dir);
+	dma_sync_single_for_device(dev, addr + offset, size, dir);
 }
 
 static inline void
diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h
index 979c6a57f2f..4f3d75e1ad3 100644
--- a/include/asm-generic/gpio.h
+++ b/include/asm-generic/gpio.h
@@ -60,7 +60,9 @@ struct module;
  * @names: if set, must be an array of strings to use as alternative
  *      names for the GPIOs in this chip. Any entry in the array
  *      may be NULL if there is no alias for the GPIO, however the
- *      array must be @ngpio entries long.
+ *      array must be @ngpio entries long.  A name can include a single printk
+ *      format specifier for an unsigned int.  It is substituted by the actual
+ *      number of the gpio.
  *
  * A gpio_chip can help platforms abstract various sources of GPIOs so
  * they can all be accessed through a common programing interface.
@@ -88,6 +90,9 @@ struct gpio_chip {
 						unsigned offset);
 	int			(*direction_output)(struct gpio_chip *chip,
 						unsigned offset, int value);
+	int			(*set_debounce)(struct gpio_chip *chip,
+						unsigned offset, unsigned debounce);
+
 	void			(*set)(struct gpio_chip *chip,
 						unsigned offset, int value);
 
@@ -98,7 +103,7 @@ struct gpio_chip {
 						struct gpio_chip *chip);
 	int			base;
 	u16			ngpio;
-	char			**names;
+	const char		*const *names;
 	unsigned		can_sleep:1;
 	unsigned		exported:1;
 };
@@ -121,6 +126,8 @@ extern void gpio_free(unsigned gpio);
 extern int gpio_direction_input(unsigned gpio);
 extern int gpio_direction_output(unsigned gpio, int value);
 
+extern int gpio_set_debounce(unsigned gpio, unsigned debounce);
+
 extern int gpio_get_value_cansleep(unsigned gpio);
 extern void gpio_set_value_cansleep(unsigned gpio, int value);
 
diff --git a/include/asm-generic/kmap_types.h b/include/asm-generic/kmap_types.h
index 97e807c8c81..0232ccb76f2 100644
--- a/include/asm-generic/kmap_types.h
+++ b/include/asm-generic/kmap_types.h
@@ -29,6 +29,9 @@ KMAP_D(16)	KM_IRQ_PTE,
 KMAP_D(17)	KM_NMI,
 KMAP_D(18)	KM_NMI_PTE,
 KMAP_D(19)	KM_KDB,
+/*
+ * Remember to update debug_kmap_atomic() when adding new kmap types!
+ */
 KMAP_D(20)	KM_TYPE_NR
 };
 
diff --git a/include/asm-generic/percpu.h b/include/asm-generic/percpu.h
index 04f91c2d3f7..b5043a9890d 100644
--- a/include/asm-generic/percpu.h
+++ b/include/asm-generic/percpu.h
@@ -80,7 +80,7 @@ extern void setup_per_cpu_areas(void);
 
 #ifndef PER_CPU_BASE_SECTION
 #ifdef CONFIG_SMP
-#define PER_CPU_BASE_SECTION ".data.percpu"
+#define PER_CPU_BASE_SECTION ".data..percpu"
 #else
 #define PER_CPU_BASE_SECTION ".data"
 #endif
@@ -92,15 +92,15 @@ extern void setup_per_cpu_areas(void);
 #define PER_CPU_SHARED_ALIGNED_SECTION ""
 #define PER_CPU_ALIGNED_SECTION ""
 #else
-#define PER_CPU_SHARED_ALIGNED_SECTION ".shared_aligned"
-#define PER_CPU_ALIGNED_SECTION ".shared_aligned"
+#define PER_CPU_SHARED_ALIGNED_SECTION "..shared_aligned"
+#define PER_CPU_ALIGNED_SECTION "..shared_aligned"
 #endif
-#define PER_CPU_FIRST_SECTION ".first"
+#define PER_CPU_FIRST_SECTION "..first"
 
 #else
 
 #define PER_CPU_SHARED_ALIGNED_SECTION ""
-#define PER_CPU_ALIGNED_SECTION ".shared_aligned"
+#define PER_CPU_ALIGNED_SECTION "..shared_aligned"
 #define PER_CPU_FIRST_SECTION ""
 
 #endif
diff --git a/include/asm-generic/scatterlist.h b/include/asm-generic/scatterlist.h
index 8b9454496a7..5de07355fad 100644
--- a/include/asm-generic/scatterlist.h
+++ b/include/asm-generic/scatterlist.h
@@ -11,7 +11,9 @@ struct scatterlist {
 	unsigned int	offset;
 	unsigned int	length;
 	dma_addr_t	dma_address;
+#ifdef CONFIG_NEED_SG_DMA_LENGTH
 	unsigned int	dma_length;
+#endif
 };
 
 /*
@@ -22,22 +24,11 @@ struct scatterlist {
  * is 0.
  */
 #define sg_dma_address(sg)	((sg)->dma_address)
-#ifndef sg_dma_len
-/*
- * Normally, you have an iommu on 64 bit machines, but not on 32 bit
- * machines. Architectures that are differnt should override this.
- */
-#if __BITS_PER_LONG == 64
+
+#ifdef CONFIG_NEED_SG_DMA_LENGTH
 #define sg_dma_len(sg)		((sg)->dma_length)
 #else
 #define sg_dma_len(sg)		((sg)->length)
-#endif /* 64 bit */
-#endif /* sg_dma_len */
-
-#ifndef ISA_DMA_THRESHOLD
-#define ISA_DMA_THRESHOLD	(~0UL)
 #endif
 
-#define ARCH_HAS_SG_CHAIN
-
 #endif /* __ASM_GENERIC_SCATTERLIST_H */
diff --git a/include/asm-generic/topology.h b/include/asm-generic/topology.h
index 510df36dd5d..fd60700503c 100644
--- a/include/asm-generic/topology.h
+++ b/include/asm-generic/topology.h
@@ -34,6 +34,9 @@
 #ifndef cpu_to_node
 #define cpu_to_node(cpu)	((void)(cpu),0)
 #endif
+#ifndef cpu_to_mem
+#define cpu_to_mem(cpu)		((void)(cpu),0)
+#endif
 #ifndef parent_node
 #define parent_node(node)	((void)(node),0)
 #endif
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 67e652068e0..48c5299cbf2 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -175,25 +175,25 @@
 #define NOSAVE_DATA							\
 	. = ALIGN(PAGE_SIZE);						\
 	VMLINUX_SYMBOL(__nosave_begin) = .;				\
-	*(.data.nosave)							\
+	*(.data..nosave)						\
 	. = ALIGN(PAGE_SIZE);						\
 	VMLINUX_SYMBOL(__nosave_end) = .;
 
 #define PAGE_ALIGNED_DATA(page_align)					\
 	. = ALIGN(page_align);						\
-	*(.data.page_aligned)
+	*(.data..page_aligned)
 
 #define READ_MOSTLY_DATA(align)						\
 	. = ALIGN(align);						\
-	*(.data.read_mostly)
+	*(.data..read_mostly)
 
 #define CACHELINE_ALIGNED_DATA(align)					\
 	. = ALIGN(align);						\
-	*(.data.cacheline_aligned)
+	*(.data..cacheline_aligned)
 
 #define INIT_TASK_DATA(align)						\
 	. = ALIGN(align);						\
-	*(.data.init_task)
+	*(.data..init_task)
 
 /*
  * Read only Data
@@ -247,10 +247,10 @@
 	}								\
 									\
 	/* RapidIO route ops */						\
-	.rio_route        : AT(ADDR(.rio_route) - LOAD_OFFSET) {	\
-		VMLINUX_SYMBOL(__start_rio_route_ops) = .;		\
-		*(.rio_route_ops)					\
-		VMLINUX_SYMBOL(__end_rio_route_ops) = .;		\
+	.rio_ops        : AT(ADDR(.rio_ops) - LOAD_OFFSET) {		\
+		VMLINUX_SYMBOL(__start_rio_switch_ops) = .;		\
+		*(.rio_switch_ops)					\
+		VMLINUX_SYMBOL(__end_rio_switch_ops) = .;		\
 	}								\
 									\
 	TRACEDATA							\
@@ -435,7 +435,7 @@
  */
 #define INIT_TASK_DATA_SECTION(align)					\
 	. = ALIGN(align);						\
-	.data.init_task : {						\
+	.data..init_task : {						\
 		INIT_TASK_DATA(align)					\
 	}
 
@@ -499,7 +499,7 @@
 #define BSS(bss_align)							\
 	. = ALIGN(bss_align);						\
 	.bss : AT(ADDR(.bss) - LOAD_OFFSET) {				\
-		*(.bss.page_aligned)					\
+		*(.bss..page_aligned)					\
 		*(.dynbss)						\
 		*(.bss)							\
 		*(COMMON)						\
@@ -666,16 +666,16 @@
  */
 #define PERCPU_VADDR(vaddr, phdr)					\
 	VMLINUX_SYMBOL(__per_cpu_load) = .;				\
-	.data.percpu vaddr : AT(VMLINUX_SYMBOL(__per_cpu_load)		\
+	.data..percpu vaddr : AT(VMLINUX_SYMBOL(__per_cpu_load)		\
 				- LOAD_OFFSET) {			\
 		VMLINUX_SYMBOL(__per_cpu_start) = .;			\
-		*(.data.percpu.first)					\
-		*(.data.percpu.page_aligned)				\
-		*(.data.percpu)						\
-		*(.data.percpu.shared_aligned)				\
+		*(.data..percpu..first)					\
+		*(.data..percpu..page_aligned)				\
+		*(.data..percpu)					\
+		*(.data..percpu..shared_aligned)			\
 		VMLINUX_SYMBOL(__per_cpu_end) = .;			\
 	} phdr								\
-	. = VMLINUX_SYMBOL(__per_cpu_load) + SIZEOF(.data.percpu);
+	. = VMLINUX_SYMBOL(__per_cpu_load) + SIZEOF(.data..percpu);
 
 /**
  * PERCPU - define output section for percpu area, simple version
@@ -687,18 +687,18 @@
  *
  * This macro is equivalent to ALIGN(align); PERCPU_VADDR( , ) except
  * that __per_cpu_load is defined as a relative symbol against
- * .data.percpu which is required for relocatable x86_32
+ * .data..percpu which is required for relocatable x86_32
  * configuration.
  */
 #define PERCPU(align)							\
 	. = ALIGN(align);						\
-	.data.percpu	: AT(ADDR(.data.percpu) - LOAD_OFFSET) {	\
+	.data..percpu	: AT(ADDR(.data..percpu) - LOAD_OFFSET) {	\
 		VMLINUX_SYMBOL(__per_cpu_load) = .;			\
 		VMLINUX_SYMBOL(__per_cpu_start) = .;			\
-		*(.data.percpu.first)					\
-		*(.data.percpu.page_aligned)				\
-		*(.data.percpu)						\
-		*(.data.percpu.shared_aligned)				\
+		*(.data..percpu..first)					\
+		*(.data..percpu..page_aligned)				\
+		*(.data..percpu)					\
+		*(.data..percpu..shared_aligned)			\
 		VMLINUX_SYMBOL(__per_cpu_end) = .;			\
 	}