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) = .;                      \
         }