Merge commit 'v2.6.36-rc3' into x86/memblock

Conflicts:
	arch/x86/kernel/trampoline.c
	mm/memblock.c

Merge reason: Resolve the conflicts, update to latest upstream.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

23 files changed, 190 insertions, 181 deletions

diff --git a/arch/sparc/include/asm/atomic_64.h b/arch/sparc/include/asm/atomic_64.h
index 2050ca02c423..bdb2ff880bdd 100644
--- a/arch/sparc/include/asm/atomic_64.h
+++ b/arch/sparc/include/asm/atomic_64.h
@@ -20,14 +20,14 @@
 #define atomic64_set(v, i)      (((v)->counter) = i)
 
 extern void atomic_add(int, atomic_t *);
-extern void atomic64_add(int, atomic64_t *);
+extern void atomic64_add(long, atomic64_t *);
 extern void atomic_sub(int, atomic_t *);
-extern void atomic64_sub(int, atomic64_t *);
+extern void atomic64_sub(long, atomic64_t *);
 
 extern int atomic_add_ret(int, atomic_t *);
-extern int atomic64_add_ret(int, atomic64_t *);
+extern long atomic64_add_ret(long, atomic64_t *);
 extern int atomic_sub_ret(int, atomic_t *);
-extern int atomic64_sub_ret(int, atomic64_t *);
+extern long atomic64_sub_ret(long, atomic64_t *);
 
 #define atomic_dec_return(v) atomic_sub_ret(1, v)
 #define atomic64_dec_return(v) atomic64_sub_ret(1, v)
@@ -91,7 +91,7 @@ static inline int atomic_add_unless(atomic_t *v, int a, int u)
         ((__typeof__((v)->counter))cmpxchg(&((v)->counter), (o), (n)))
 #define atomic64_xchg(v, new) (xchg(&((v)->counter), new))
 
-static inline int atomic64_add_unless(atomic64_t *v, long a, long u)
+static inline long atomic64_add_unless(atomic64_t *v, long a, long u)
 {
         long c, old;
         c = atomic64_read(v);
diff --git a/arch/sparc/include/asm/backoff.h b/arch/sparc/include/asm/backoff.h
index fa1fdf67e350..db3af0d30fb1 100644
--- a/arch/sparc/include/asm/backoff.h
+++ b/arch/sparc/include/asm/backoff.h
@@ -8,6 +8,9 @@
 #define BACKOFF_SETUP(reg)      \
         mov     1, reg
 
+#define BACKOFF_LABEL(spin_label, continue_label) \
+        spin_label
+
 #define BACKOFF_SPIN(reg, tmp, label)   \
         mov     reg, tmp; \
 88:     brnz,pt tmp, 88b; \
@@ -22,9 +25,11 @@
 #else
 
 #define BACKOFF_SETUP(reg)
-#define BACKOFF_SPIN(reg, tmp, label) \
-        ba,pt   %xcc, label; \
-         nop;
+
+#define BACKOFF_LABEL(spin_label, continue_label) \
+        continue_label
+
+#define BACKOFF_SPIN(reg, tmp, label)
 
 #endif
 
diff --git a/arch/sparc/include/asm/device.h b/arch/sparc/include/asm/device.h
index d4c452147412..daa6a8a5e9cd 100644
--- a/arch/sparc/include/asm/device.h
+++ b/arch/sparc/include/asm/device.h
@@ -6,18 +6,25 @@
 #ifndef _ASM_SPARC_DEVICE_H
 #define _ASM_SPARC_DEVICE_H
 
+#include <asm/openprom.h>
+
 struct device_node;
-struct of_device;
+struct platform_device;
 
 struct dev_archdata {
         void                    *iommu;
         void                    *stc;
         void                    *host_controller;
-        struct of_device        *op;
+        struct platform_device  *op;
         int                     numa_node;
 };
 
+extern void of_propagate_archdata(struct platform_device *bus);
+
 struct pdev_archdata {
+        struct resource         resource[PROMREG_MAX];
+        unsigned int            irqs[PROMINTR_MAX];
+        int                     num_irqs;
 };
 
 #endif /* _ASM_SPARC_DEVICE_H */
diff --git a/arch/sparc/include/asm/dma-mapping.h b/arch/sparc/include/asm/dma-mapping.h
index 4b4a0c0b0ccd..8c0e4f7bb204 100644
--- a/arch/sparc/include/asm/dma-mapping.h
+++ b/arch/sparc/include/asm/dma-mapping.h
@@ -11,7 +11,6 @@ extern int dma_supported(struct device *dev, u64 mask);
 
 #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
 #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
-#define dma_is_consistent(d, h) (1)
 
 extern struct dma_map_ops *dma_ops, pci32_dma_ops;
 extern struct bus_type pci_bus_type;
@@ -52,15 +51,6 @@ static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
         return (dma_addr == DMA_ERROR_CODE);
 }
 
-static inline int dma_get_cache_alignment(void)
-{
-        /*
-         * no easy way to get cache size on all processors, so return
-         * the maximum possible, to be safe
-         */
-        return (1 << INTERNODE_CACHE_SHIFT);
-}
-
 static inline int dma_set_mask(struct device *dev, u64 mask)
 {
 #ifdef CONFIG_PCI
diff --git a/arch/sparc/include/asm/fb.h b/arch/sparc/include/asm/fb.h
index e834880be204..2173432ad7f7 100644
--- a/arch/sparc/include/asm/fb.h
+++ b/arch/sparc/include/asm/fb.h
@@ -1,5 +1,6 @@
 #ifndef _SPARC_FB_H_
 #define _SPARC_FB_H_
+#include <linux/console.h>
 #include <linux/fb.h>
 #include <linux/fs.h>
 #include <asm/page.h>
@@ -18,6 +19,9 @@ static inline int fb_is_primary_device(struct fb_info *info)
         struct device *dev = info->device;
         struct device_node *node;
 
+        if (console_set_on_cmdline)
+                return 0;
+
         node = dev->of_node;
         if (node &&
             node == of_console_device)
diff --git a/arch/sparc/include/asm/floppy_64.h b/arch/sparc/include/asm/floppy_64.h
index 8fac3ab22f36..6597ce874d78 100644
--- a/arch/sparc/include/asm/floppy_64.h
+++ b/arch/sparc/include/asm/floppy_64.h
@@ -43,7 +43,7 @@ struct sun_flpy_controller {
 /* You'll only ever find one controller on an Ultra anyways. */
 static struct sun_flpy_controller *sun_fdc = (struct sun_flpy_controller *)-1;
 unsigned long fdc_status;
-static struct of_device *floppy_op = NULL;
+static struct platform_device *floppy_op = NULL;
 
 struct sun_floppy_ops {
         unsigned char   (*fd_inb) (unsigned long port);
@@ -548,7 +548,7 @@ static unsigned long __init sun_floppy_init(void)
 {
         static int initialized = 0;
         struct device_node *dp;
-        struct of_device *op;
+        struct platform_device *op;
         const char *prop;
         char state[128];
 
@@ -567,7 +567,7 @@ static unsigned long __init sun_floppy_init(void)
         }
         if (op) {
                 floppy_op = op;
-                FLOPPY_IRQ = op->irqs[0];
+                FLOPPY_IRQ = op->archdata.irqs[0];
         } else {
                 struct device_node *ebus_dp;
                 void __iomem *auxio_reg;
@@ -593,7 +593,7 @@ static unsigned long __init sun_floppy_init(void)
                 if (state_prop && !strncmp(state_prop, "disabled", 8))
                         return 0;
 
-                FLOPPY_IRQ = op->irqs[0];
+                FLOPPY_IRQ = op->archdata.irqs[0];
 
                 /* Make sure the high density bit is set, some systems
                  * (most notably Ultra5/Ultra10) come up with it clear.
@@ -661,7 +661,7 @@ static unsigned long __init sun_floppy_init(void)
                 config = 0;
                 for (dp = ebus_dp->child; dp; dp = dp->sibling) {
                         if (!strcmp(dp->name, "ecpp")) {
-                                struct of_device *ecpp_op;
+                                struct platform_device *ecpp_op;
 
                                 ecpp_op = of_find_device_by_node(dp);
                                 if (ecpp_op)
diff --git a/arch/sparc/include/asm/highmem.h b/arch/sparc/include/asm/highmem.h
index 3de42e776274..ec23b0a87b98 100644
--- a/arch/sparc/include/asm/highmem.h
+++ b/arch/sparc/include/asm/highmem.h
@@ -71,7 +71,7 @@ static inline void kunmap(struct page *page)
 }
 
 extern void *kmap_atomic(struct page *page, enum km_type type);
-extern void kunmap_atomic(void *kvaddr, enum km_type type);
+extern void kunmap_atomic_notypecheck(void *kvaddr, enum km_type type);
 extern struct page *kmap_atomic_to_page(void *vaddr);
 
 #define flush_cache_kmaps()     flush_cache_all()
diff --git a/arch/sparc/include/asm/ioctls.h b/arch/sparc/include/asm/ioctls.h
index 1fe6855c5c18..53f4ee009bdd 100644
--- a/arch/sparc/include/asm/ioctls.h
+++ b/arch/sparc/include/asm/ioctls.h
@@ -80,6 +80,7 @@
 /* Get minor device of a pty master's FD -- Solaris equiv is ISPTM */
 #define TIOCGPTN        _IOR('t', 134, unsigned int) /* Get Pty Number */
 #define TIOCSPTLCK      _IOW('t', 135, int) /* Lock/unlock PTY */
+#define TIOCSIG         _IOW('t', 136, int) /* Generate signal on Pty slave */
 
 /* Little f */
 #define FIOCLEX         _IO('f', 1)
@@ -132,5 +133,6 @@
 #define TIOCPKT_START            8
 #define TIOCPKT_NOSTOP          16
 #define TIOCPKT_DOSTOP          32
+#define TIOCPKT_IOCTL           64
 
 #endif /* !(_ASM_SPARC_IOCTLS_H) */
diff --git a/arch/sparc/include/asm/local64.h b/arch/sparc/include/asm/local64.h
new file mode 100644
index 000000000000..36c93b5cc239
--- /dev/null
+++ b/arch/sparc/include/asm/local64.h
@@ -0,0 +1 @@
+#include <asm-generic/local64.h>
diff --git a/arch/sparc/include/asm/of_device.h b/arch/sparc/include/asm/of_device.h
deleted file mode 100644
index f320246a0586..000000000000
--- a/arch/sparc/include/asm/of_device.h
+++ /dev/null
@@ -1,38 +0,0 @@
-#ifndef _ASM_SPARC_OF_DEVICE_H
-#define _ASM_SPARC_OF_DEVICE_H
-#ifdef __KERNEL__
-
-#include <linux/device.h>
-#include <linux/of.h>
-#include <linux/mod_devicetable.h>
-#include <asm/openprom.h>
-
-/*
- * The of_device is a kind of "base class" that is a superset of
- * struct device for use by devices attached to an OF node and
- * probed using OF properties.
- */
-struct of_device
-{
-        struct device                   dev;
-        struct resource                 resource[PROMREG_MAX];
-        unsigned int                    irqs[PROMINTR_MAX];
-        int                             num_irqs;
-
-        void                            *sysdata;
-
-        int                             slot;
-        int                             portid;
-        int                             clock_freq;
-};
-
-extern void __iomem *of_ioremap(struct resource *res, unsigned long offset, unsigned long size, char *name);
-extern void of_iounmap(struct resource *res, void __iomem *base, unsigned long size);
-
-extern void of_propagate_archdata(struct of_device *bus);
-
-/* This is just here during the transition */
-#include <linux/of_platform.h>
-
-#endif /* __KERNEL__ */
-#endif /* _ASM_SPARC_OF_DEVICE_H */
diff --git a/arch/sparc/include/asm/of_platform.h b/arch/sparc/include/asm/of_platform.h
deleted file mode 100644
index 90da99059f83..000000000000
--- a/arch/sparc/include/asm/of_platform.h
+++ /dev/null
@@ -1,18 +0,0 @@
-#ifndef ___ASM_SPARC_OF_PLATFORM_H
-#define ___ASM_SPARC_OF_PLATFORM_H
-/*
- *    Copyright (C) 2006 Benjamin Herrenschmidt, IBM Corp.
- *                       <benh@kernel.crashing.org>
- *    Modified for Sparc by merging parts of asm/of_device.h
- *              by Stephen Rothwell
- *
- *  This program is free software; you can redistribute it and/or
- *  modify it under the terms of the GNU General Public License
- *  as published by the Free Software Foundation; either version
- *  2 of the License, or (at your option) any later version.
- *
- */
-
-#define of_bus_type     of_platform_bus_type    /* for compatibility */
-
-#endif
diff --git a/arch/sparc/include/asm/oplib_64.h b/arch/sparc/include/asm/oplib_64.h
index a5db0317b5fb..3e0b2d62303d 100644
--- a/arch/sparc/include/asm/oplib_64.h
+++ b/arch/sparc/include/asm/oplib_64.h
@@ -185,9 +185,8 @@ extern int prom_getunumber(int syndrome_code,
                            char *buf, int buflen);
 
 /* Retain physical memory to the caller across soft resets. */
-extern unsigned long prom_retain(const char *name,
-                                 unsigned long pa_low, unsigned long pa_high,
-                                 long size, long align);
+extern int prom_retain(const char *name, unsigned long size,
+                       unsigned long align, unsigned long *paddr);
 
 /* Load explicit I/D TLB entries into the calling processor. */
 extern long prom_itlb_load(unsigned long index,
@@ -287,26 +286,6 @@ extern void prom_sun4v_guest_soft_state(void);
 extern int prom_ihandle2path(int handle, char *buffer, int bufsize);
 
 /* Client interface level routines. */
-extern long p1275_cmd(const char *, long, ...);
-
-#if 0
-#define P1275_SIZE(x) ((((long)((x) / 32)) << 32) | (x))
-#else
-#define P1275_SIZE(x) x
-#endif
-
-/* We support at most 16 input and 1 output argument */
-#define P1275_ARG_NUMBER                0
-#define P1275_ARG_IN_STRING             1
-#define P1275_ARG_OUT_BUF               2
-#define P1275_ARG_OUT_32B               3
-#define P1275_ARG_IN_FUNCTION           4
-#define P1275_ARG_IN_BUF                5
-#define P1275_ARG_IN_64B                6
-
-#define P1275_IN(x) ((x) & 0xf)
-#define P1275_OUT(x) (((x) << 4) & 0xf0)
-#define P1275_INOUT(i,o) (P1275_IN(i)|P1275_OUT(o))
-#define P1275_ARG(n,x) ((x) << ((n)*3 + 8))
+extern void p1275_cmd_direct(unsigned long *);
 
 #endif /* !(__SPARC64_OPLIB_H) */
diff --git a/arch/sparc/include/asm/parport.h b/arch/sparc/include/asm/parport.h
index c333b8d0949b..aa4c82648d88 100644
--- a/arch/sparc/include/asm/parport.h
+++ b/arch/sparc/include/asm/parport.h
@@ -103,7 +103,7 @@ static inline unsigned int get_dma_residue(unsigned int dmanr)
         return ebus_dma_residue(&sparc_ebus_dmas[dmanr].info);
 }
 
-static int __devinit ecpp_probe(struct of_device *op, const struct of_device_id *match)
+static int __devinit ecpp_probe(struct platform_device *op, const struct of_device_id *match)
 {
         unsigned long base = op->resource[0].start;
         unsigned long config = op->resource[1].start;
@@ -116,7 +116,7 @@ static int __devinit ecpp_probe(struct of_device *op, const struct of_device_id
         parent = op->dev.of_node->parent;
         if (!strcmp(parent->name, "dma")) {
                 p = parport_pc_probe_port(base, base + 0x400,
-                                          op->irqs[0], PARPORT_DMA_NOFIFO,
+                                          op->archdata.irqs[0], PARPORT_DMA_NOFIFO,
                                           op->dev.parent->parent, 0);
                 if (!p)
                         return -ENOMEM;
@@ -166,7 +166,7 @@ static int __devinit ecpp_probe(struct of_device *op, const struct of_device_id
                        0, PTR_LPT_REG_DIR);
 
         p = parport_pc_probe_port(base, base + 0x400,
-                                  op->irqs[0],
+                                  op->archdata.irqs[0],
                                   slot,
                                   op->dev.parent,
                                   0);
@@ -192,7 +192,7 @@ out_err:
         return err;
 }
 
-static int __devexit ecpp_remove(struct of_device *op)
+static int __devexit ecpp_remove(struct platform_device *op)
 {
         struct parport *p = dev_get_drvdata(&op->dev);
         int slot = p->dma;
@@ -228,6 +228,10 @@ static const struct of_device_id ecpp_match[] = {
                 .name = "parallel",
                 .compatible = "ns87317-ecpp",
         },
+        {
+                .name = "parallel",
+                .compatible = "pnpALI,1533,3",
+        },
         {},
 };
 
@@ -243,9 +247,7 @@ static struct of_platform_driver ecpp_driver = {
 
 static int parport_pc_find_nonpci_ports(int autoirq, int autodma)
 {
-        of_register_driver(&ecpp_driver, &of_bus_type);
-
-        return 0;
+        return of_register_platform_driver(&ecpp_driver);
 }
 
 #endif /* !(_ASM_SPARC64_PARPORT_H */
diff --git a/arch/sparc/include/asm/perf_event.h b/arch/sparc/include/asm/perf_event.h
index 7e2669894ce8..727af70646cb 100644
--- a/arch/sparc/include/asm/perf_event.h
+++ b/arch/sparc/include/asm/perf_event.h
@@ -6,7 +6,30 @@ extern void set_perf_event_pending(void);
 #define PERF_EVENT_INDEX_OFFSET 0
 
 #ifdef CONFIG_PERF_EVENTS
+#include <asm/ptrace.h>
+
 extern void init_hw_perf_events(void);
+
+#define perf_arch_fetch_caller_regs(regs, ip)           \
+do {                                                    \
+        unsigned long _pstate, _asi, _pil, _i7, _fp;    \
+        __asm__ __volatile__("rdpr %%pstate, %0\n\t"    \
+                             "rd %%asi, %1\n\t"         \
+                             "rdpr %%pil, %2\n\t"       \
+                             "mov %%i7, %3\n\t"         \
+                             "mov %%i6, %4\n\t"         \
+                             : "=r" (_pstate),          \
+                               "=r" (_asi),             \
+                               "=r" (_pil),             \
+                               "=r" (_i7),              \
+                               "=r" (_fp));             \
+        (regs)->tstate = (_pstate << 8) |               \
+                (_asi << 24) | (_pil << 20);            \
+        (regs)->tpc = (ip);                             \
+        (regs)->tnpc = (regs)->tpc + 4;                 \
+        (regs)->u_regs[UREG_I6] = _fp;                  \
+        (regs)->u_regs[UREG_I7] = _i7;                  \
+} while (0)
 #else
 static inline void init_hw_perf_events(void)    { }
 #endif
diff --git a/arch/sparc/include/asm/prom.h b/arch/sparc/include/asm/prom.h
index f845828ca4c6..291f12575edd 100644
--- a/arch/sparc/include/asm/prom.h
+++ b/arch/sparc/include/asm/prom.h
@@ -43,20 +43,22 @@ extern int of_getintprop_default(struct device_node *np,
 extern int of_find_in_proplist(const char *list, const char *match, int len);
 #ifdef CONFIG_NUMA
 extern int of_node_to_nid(struct device_node *dp);
-#else
-#define of_node_to_nid(dp)      (-1)
+#define of_node_to_nid of_node_to_nid
 #endif
 
 extern void prom_build_devicetree(void);
 extern void of_populate_present_mask(void);
 extern void of_fill_in_cpu_data(void);
 
+struct resource;
+extern void __iomem *of_ioremap(struct resource *res, unsigned long offset, unsigned long size, char *name);
+extern void of_iounmap(struct resource *res, void __iomem *base, unsigned long size);
+
 /* These routines are here to provide compatibility with how powerpc
  * handles IRQ mapping for OF device nodes.  We precompute and permanently
- * register them in the of_device objects, whereas powerpc computes them
+ * register them in the platform_device objects, whereas powerpc computes them
  * on request.
  */
-extern unsigned int irq_of_parse_and_map(struct device_node *node, int index);
 static inline void irq_dispose_mapping(unsigned int virq)
 {
 }
diff --git a/arch/sparc/include/asm/rwsem-const.h b/arch/sparc/include/asm/rwsem-const.h
deleted file mode 100644
index a303c9d64d84..000000000000
--- a/arch/sparc/include/asm/rwsem-const.h
+++ /dev/null
@@ -1,12 +0,0 @@
-/* rwsem-const.h: RW semaphore counter constants.  */
-#ifndef _SPARC64_RWSEM_CONST_H
-#define _SPARC64_RWSEM_CONST_H
-
-#define RWSEM_UNLOCKED_VALUE            0x00000000
-#define RWSEM_ACTIVE_BIAS               0x00000001
-#define RWSEM_ACTIVE_MASK               0x0000ffff
-#define RWSEM_WAITING_BIAS              0xffff0000
-#define RWSEM_ACTIVE_READ_BIAS          RWSEM_ACTIVE_BIAS
-#define RWSEM_ACTIVE_WRITE_BIAS         (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS)
-
-#endif /* _SPARC64_RWSEM_CONST_H */
diff --git a/arch/sparc/include/asm/rwsem.h b/arch/sparc/include/asm/rwsem.h
index 6e5621006f85..a2b4302869bc 100644
--- a/arch/sparc/include/asm/rwsem.h
+++ b/arch/sparc/include/asm/rwsem.h
@@ -15,16 +15,21 @@
 
 #include <linux/list.h>
 #include <linux/spinlock.h>
-#include <asm/rwsem-const.h>
 
 struct rwsem_waiter;
 
 struct rw_semaphore {
-        signed int count;
-        spinlock_t              wait_lock;
-        struct list_head        wait_list;
+        signed long                     count;
+#define RWSEM_UNLOCKED_VALUE            0x00000000L
+#define RWSEM_ACTIVE_BIAS               0x00000001L
+#define RWSEM_ACTIVE_MASK               0xffffffffL
+#define RWSEM_WAITING_BIAS              (-RWSEM_ACTIVE_MASK-1)
+#define RWSEM_ACTIVE_READ_BIAS          RWSEM_ACTIVE_BIAS
+#define RWSEM_ACTIVE_WRITE_BIAS         (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS)
+        spinlock_t                      wait_lock;
+        struct list_head                wait_list;
 #ifdef CONFIG_DEBUG_LOCK_ALLOC
-        struct lockdep_map      dep_map;
+        struct lockdep_map              dep_map;
 #endif
 };
 
@@ -41,6 +46,11 @@ struct rw_semaphore {
 #define DECLARE_RWSEM(name) \
         struct rw_semaphore name = __RWSEM_INITIALIZER(name)
 
+extern struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *sem);
+extern struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *sem);
+extern struct rw_semaphore *rwsem_wake(struct rw_semaphore *sem);
+extern struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem);
+
 extern void __init_rwsem(struct rw_semaphore *sem, const char *name,
                          struct lock_class_key *key);
 
@@ -51,27 +61,103 @@ do {								\
         __init_rwsem((sem), #sem, &__key);                      \
 } while (0)
 
-extern void __down_read(struct rw_semaphore *sem);
-extern int __down_read_trylock(struct rw_semaphore *sem);
-extern void __down_write(struct rw_semaphore *sem);
-extern int __down_write_trylock(struct rw_semaphore *sem);
-extern void __up_read(struct rw_semaphore *sem);
-extern void __up_write(struct rw_semaphore *sem);
-extern void __downgrade_write(struct rw_semaphore *sem);
+/*
+ * lock for reading
+ */
+static inline void __down_read(struct rw_semaphore *sem)
+{
+        if (unlikely(atomic64_inc_return((atomic64_t *)(&sem->count)) <= 0L))
+                rwsem_down_read_failed(sem);
+}
+
+static inline int __down_read_trylock(struct rw_semaphore *sem)
+{
+        long tmp;
+
+        while ((tmp = sem->count) >= 0L) {
+                if (tmp == cmpxchg(&sem->count, tmp,
+                                   tmp + RWSEM_ACTIVE_READ_BIAS)) {
+                        return 1;
+                }
+        }
+        return 0;
+}
 
+/*
+ * lock for writing
+ */
 static inline void __down_write_nested(struct rw_semaphore *sem, int subclass)
 {
-        __down_write(sem);
+        long tmp;
+
+        tmp = atomic64_add_return(RWSEM_ACTIVE_WRITE_BIAS,
+                                  (atomic64_t *)(&sem->count));
+        if (unlikely(tmp != RWSEM_ACTIVE_WRITE_BIAS))
+                rwsem_down_write_failed(sem);
 }
 
-static inline int rwsem_atomic_update(int delta, struct rw_semaphore *sem)
+static inline void __down_write(struct rw_semaphore *sem)
 {
-        return atomic_add_return(delta, (atomic_t *)(&sem->count));
+        __down_write_nested(sem, 0);
+}
+
+static inline int __down_write_trylock(struct rw_semaphore *sem)
+{
+        long tmp;
+
+        tmp = cmpxchg(&sem->count, RWSEM_UNLOCKED_VALUE,
+                      RWSEM_ACTIVE_WRITE_BIAS);
+        return tmp == RWSEM_UNLOCKED_VALUE;
 }
 
-static inline void rwsem_atomic_add(int delta, struct rw_semaphore *sem)
+/*
+ * unlock after reading
+ */
+static inline void __up_read(struct rw_semaphore *sem)
+{
+        long tmp;
+
+        tmp = atomic64_dec_return((atomic64_t *)(&sem->count));
+        if (unlikely(tmp < -1L && (tmp & RWSEM_ACTIVE_MASK) == 0L))
+                rwsem_wake(sem);
+}
+
+/*
+ * unlock after writing
+ */
+static inline void __up_write(struct rw_semaphore *sem)
+{
+        if (unlikely(atomic64_sub_return(RWSEM_ACTIVE_WRITE_BIAS,
+                                         (atomic64_t *)(&sem->count)) < 0L))
+                rwsem_wake(sem);
+}
+
+/*
+ * implement atomic add functionality
+ */
+static inline void rwsem_atomic_add(long delta, struct rw_semaphore *sem)
+{
+        atomic64_add(delta, (atomic64_t *)(&sem->count));
+}
+
+/*
+ * downgrade write lock to read lock
+ */
+static inline void __downgrade_write(struct rw_semaphore *sem)
+{
+        long tmp;
+
+        tmp = atomic64_add_return(-RWSEM_WAITING_BIAS, (atomic64_t *)(&sem->count));
+        if (tmp < 0L)
+                rwsem_downgrade_wake(sem);
+}
+
+/*
+ * implement exchange and add functionality
+ */
+static inline long rwsem_atomic_update(long delta, struct rw_semaphore *sem)
 {
-        atomic_add(delta, (atomic_t *)(&sem->count));
+        return atomic64_add_return(delta, (atomic64_t *)(&sem->count));
 }
 
 static inline int rwsem_is_locked(struct rw_semaphore *sem)
diff --git a/arch/sparc/include/asm/scatterlist.h b/arch/sparc/include/asm/scatterlist.h
index 433e45f05fd4..92bb638313f8 100644
--- a/arch/sparc/include/asm/scatterlist.h
+++ b/arch/sparc/include/asm/scatterlist.h
@@ -3,7 +3,6 @@
 
 #include <asm-generic/scatterlist.h>
 
-#define ISA_DMA_THRESHOLD       (~0UL)
 #define ARCH_HAS_SG_CHAIN
 
 #endif /* !(_SPARC_SCATTERLIST_H) */
diff --git a/arch/sparc/include/asm/system_64.h b/arch/sparc/include/asm/system_64.h
index d24cfe16afc1..e3b65d8cf41b 100644
--- a/arch/sparc/include/asm/system_64.h
+++ b/arch/sparc/include/asm/system_64.h
@@ -106,6 +106,7 @@ do {	__asm__ __volatile__("ba,pt	%%xcc, 1f\n\t" \
  */
 #define write_pic(__p)                                          \
         __asm__ __volatile__("ba,pt     %%xcc, 99f\n\t"         \
+                             " nop\n\t"                         \
                              ".align    64\n"                   \
                           "99:wr        %0, 0x0, %%pic\n\t"     \
                              "rd        %%pic, %%g0" : : "r" (__p))
diff --git a/arch/sparc/include/asm/termbits.h b/arch/sparc/include/asm/termbits.h
index d72dfed1f9d7..23b10ff08df2 100644
--- a/arch/sparc/include/asm/termbits.h
+++ b/arch/sparc/include/asm/termbits.h
@@ -225,6 +225,7 @@ struct ktermios {
 #define FLUSHO  0x00002000
 #define PENDIN  0x00004000
 #define IEXTEN  0x00008000
+#define EXTPROC 0x00010000
 
 /* modem lines */
 #define TIOCM_LE        0x001
diff --git a/arch/sparc/include/asm/uaccess_32.h b/arch/sparc/include/asm/uaccess_32.h
index 25f1d10155e8..8303ac481034 100644
--- a/arch/sparc/include/asm/uaccess_32.h
+++ b/arch/sparc/include/asm/uaccess_32.h
@@ -260,23 +260,8 @@ static inline unsigned long __copy_to_user(void __user *to, const void *from, un
         return __copy_user(to, (__force void __user *) from, n);
 }
 
-extern void copy_from_user_overflow(void)
-#ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS
-        __compiletime_error("copy_from_user() buffer size is not provably correct")
-#else
-        __compiletime_warning("copy_from_user() buffer size is not provably correct")
-#endif
-;
-
 static inline unsigned long copy_from_user(void *to, const void __user *from, unsigned long n)
 {
-        int sz = __compiletime_object_size(to);
-
-        if (unlikely(sz != -1 && sz < n)) {
-                copy_from_user_overflow();
-                return n;
-        }
-
         if (n && __access_ok((unsigned long) from, n))
                 return __copy_user((__force void __user *) to, from, n);
         else
diff --git a/arch/sparc/include/asm/uaccess_64.h b/arch/sparc/include/asm/uaccess_64.h
index 2406788bfe5f..3e1449f07798 100644
--- a/arch/sparc/include/asm/uaccess_64.h
+++ b/arch/sparc/include/asm/uaccess_64.h
@@ -205,14 +205,6 @@ __asm__ __volatile__(							\
 
 extern int __get_user_bad(void);
 
-extern void copy_from_user_overflow(void)
-#ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS
-        __compiletime_error("copy_from_user() buffer size is not provably correct")
-#else
-        __compiletime_warning("copy_from_user() buffer size is not provably correct")
-#endif
-;
-
 extern unsigned long __must_check ___copy_from_user(void *to,
                                                     const void __user *from,
                                                     unsigned long size);
@@ -221,16 +213,11 @@ extern unsigned long copy_from_user_fixup(void *to, const void __user *from,
 static inline unsigned long __must_check
 copy_from_user(void *to, const void __user *from, unsigned long size)
 {
-        int sz = __compiletime_object_size(to);
-        unsigned long ret = size;
-
-        if (likely(sz == -1 || sz >= size)) {
-                ret = ___copy_from_user(to, from, size);
-                if (unlikely(ret))
-                        ret = copy_from_user_fixup(to, from, size);
-        } else {
-                copy_from_user_overflow();
-        }
+        unsigned long ret = ___copy_from_user(to, from, size);
+
+        if (unlikely(ret))
+                ret = copy_from_user_fixup(to, from, size);
+
         return ret;
 }
 #define __copy_from_user copy_from_user
diff --git a/arch/sparc/include/asm/unistd.h b/arch/sparc/include/asm/unistd.h
index d0b3b01ac9d4..03eb5a8f6f93 100644
--- a/arch/sparc/include/asm/unistd.h
+++ b/arch/sparc/include/asm/unistd.h
@@ -397,8 +397,11 @@
 #define __NR_rt_tgsigqueueinfo  326
 #define __NR_perf_event_open    327
 #define __NR_recvmmsg           328
+#define __NR_fanotify_init      329
+#define __NR_fanotify_mark      330
+#define __NR_prlimit64          331
 
-#define NR_syscalls             329
+#define NR_syscalls             332
 
 #ifdef __32bit_syscall_numbers__
 /* Sparc 32-bit only has the "setresuid32", "getresuid32" variants,