Merge branch 'akpm-incoming-2'

* akpm-incoming-2: (139 commits)
  epoll: make epoll_wait() use the hrtimer range feature
  select: rename estimate_accuracy() to select_estimate_accuracy()
  Remove duplicate includes from many files
  ramoops: use the platform data structure instead of module params
  kernel/resource.c: handle reinsertion of an already-inserted resource
  kfifo: fix kfifo_alloc() to return a signed int value
  w1: don't allow arbitrary users to remove w1 devices
  alpha: remove dma64_addr_t usage
  mips: remove dma64_addr_t usage
  sparc: remove dma64_addr_t usage
  fuse: use release_pages()
  taskstats: use real microsecond granularity for CPU times
  taskstats: split fill_pid function
  taskstats: separate taskstats commands
  delayacct: align to 8 byte boundary on 64-bit systems
  delay-accounting: reimplement -c for getdelays.c to report information on a target command
  namespaces Kconfig: move namespace menu location after the cgroup
  namespaces Kconfig: remove the cgroup device whitelist experimental tag
  namespaces Kconfig: remove pointless cgroup dependency
  namespaces Kconfig: make namespace a submenu
  ...

53 files changed, 482 insertions, 379 deletions

diff --git a/arch/alpha/kernel/pci_iommu.c b/arch/alpha/kernel/pci_iommu.c
index d1dbd9acd1df..022c2748fa41 100644
--- a/arch/alpha/kernel/pci_iommu.c
+++ b/arch/alpha/kernel/pci_iommu.c
@@ -223,7 +223,7 @@ iommu_arena_free(struct pci_iommu_arena *arena, long ofs, long n)
  */
 static int pci_dac_dma_supported(struct pci_dev *dev, u64 mask)
 {
-        dma64_addr_t dac_offset = alpha_mv.pci_dac_offset;
+        dma_addr_t dac_offset = alpha_mv.pci_dac_offset;
         int ok = 1;
 
         /* If this is not set, the machine doesn't support DAC at all.  */
@@ -756,7 +756,7 @@ static void alpha_pci_unmap_sg(struct device *dev, struct scatterlist *sg,
         spin_lock_irqsave(&arena->lock, flags);
 
         for (end = sg + nents; sg < end; ++sg) {
-                dma64_addr_t addr;
+                dma_addr_t addr;
                 size_t size;
                 long npages, ofs;
                 dma_addr_t tend;
diff --git a/arch/alpha/kernel/ptrace.c b/arch/alpha/kernel/ptrace.c
index baa903602f6a..e2af5eb59bb4 100644
--- a/arch/alpha/kernel/ptrace.c
+++ b/arch/alpha/kernel/ptrace.c
@@ -269,7 +269,8 @@ void ptrace_disable(struct task_struct *child)
         user_disable_single_step(child);
 }
 
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request,
+                 unsigned long addr, unsigned long data)
 {
         unsigned long tmp;
         size_t copied;
@@ -292,7 +293,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
         case PTRACE_PEEKUSR:
                 force_successful_syscall_return();
                 ret = get_reg(child, addr);
-                DBG(DBG_MEM, ("peek $%ld->%#lx\n", addr, ret));
+                DBG(DBG_MEM, ("peek $%lu->%#lx\n", addr, ret));
                 break;
 
         /* When I and D space are separate, this will have to be fixed.  */
@@ -302,7 +303,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 break;
 
         case PTRACE_POKEUSR: /* write the specified register */
-                DBG(DBG_MEM, ("poke $%ld<-%#lx\n", addr, data));
+                DBG(DBG_MEM, ("poke $%lu<-%#lx\n", addr, data));
                 ret = put_reg(child, addr, data);
                 break;
         default:
diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
index e0cb6370ed14..3e97483abcf0 100644
--- a/arch/arm/kernel/ptrace.c
+++ b/arch/arm/kernel/ptrace.c
@@ -1075,13 +1075,15 @@ out:
 }
 #endif
 
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request,
+                 unsigned long addr, unsigned long data)
 {
         int ret;
+        unsigned long __user *datap = (unsigned long __user *) data;
 
         switch (request) {
                 case PTRACE_PEEKUSR:
-                        ret = ptrace_read_user(child, addr, (unsigned long __user *)data);
+                        ret = ptrace_read_user(child, addr, datap);
                         break;
 
                 case PTRACE_POKEUSR:
@@ -1089,34 +1091,34 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                         break;
 
                 case PTRACE_GETREGS:
-                        ret = ptrace_getregs(child, (void __user *)data);
+                        ret = ptrace_getregs(child, datap);
                         break;
 
                 case PTRACE_SETREGS:
-                        ret = ptrace_setregs(child, (void __user *)data);
+                        ret = ptrace_setregs(child, datap);
                         break;
 
                 case PTRACE_GETFPREGS:
-                        ret = ptrace_getfpregs(child, (void __user *)data);
+                        ret = ptrace_getfpregs(child, datap);
                         break;
                 
                 case PTRACE_SETFPREGS:
-                        ret = ptrace_setfpregs(child, (void __user *)data);
+                        ret = ptrace_setfpregs(child, datap);
                         break;
 
 #ifdef CONFIG_IWMMXT
                 case PTRACE_GETWMMXREGS:
-                        ret = ptrace_getwmmxregs(child, (void __user *)data);
+                        ret = ptrace_getwmmxregs(child, datap);
                         break;
 
                 case PTRACE_SETWMMXREGS:
-                        ret = ptrace_setwmmxregs(child, (void __user *)data);
+                        ret = ptrace_setwmmxregs(child, datap);
                         break;
 #endif
 
                 case PTRACE_GET_THREAD_AREA:
                         ret = put_user(task_thread_info(child)->tp_value,
-                                       (unsigned long __user *) data);
+                                       datap);
                         break;
 
                 case PTRACE_SET_SYSCALL:
@@ -1126,21 +1128,21 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 
 #ifdef CONFIG_CRUNCH
                 case PTRACE_GETCRUNCHREGS:
-                        ret = ptrace_getcrunchregs(child, (void __user *)data);
+                        ret = ptrace_getcrunchregs(child, datap);
                         break;
 
                 case PTRACE_SETCRUNCHREGS:
-                        ret = ptrace_setcrunchregs(child, (void __user *)data);
+                        ret = ptrace_setcrunchregs(child, datap);
                         break;
 #endif
 
 #ifdef CONFIG_VFP
                 case PTRACE_GETVFPREGS:
-                        ret = ptrace_getvfpregs(child, (void __user *)data);
+                        ret = ptrace_getvfpregs(child, datap);
                         break;
 
                 case PTRACE_SETVFPREGS:
-                        ret = ptrace_setvfpregs(child, (void __user *)data);
+                        ret = ptrace_setvfpregs(child, datap);
                         break;
 #endif
 
diff --git a/arch/arm/mach-tegra/timer.c b/arch/arm/mach-tegra/timer.c
index 2f420210d406..9057d6fd1d31 100644
--- a/arch/arm/mach-tegra/timer.c
+++ b/arch/arm/mach-tegra/timer.c
@@ -28,7 +28,6 @@
 #include <linux/cnt32_to_63.h>
 
 #include <asm/mach/time.h>
-#include <asm/mach/time.h>
 #include <asm/localtimer.h>
 
 #include <mach/iomap.h>
diff --git a/arch/arm/mm/highmem.c b/arch/arm/mm/highmem.c
index c00f119babbf..c435fd9e1da9 100644
--- a/arch/arm/mm/highmem.c
+++ b/arch/arm/mm/highmem.c
@@ -89,7 +89,7 @@ void __kunmap_atomic(void *kvaddr)
         int idx, type;
 
         if (kvaddr >= (void *)FIXADDR_START) {
-                type = kmap_atomic_idx_pop();
+                type = kmap_atomic_idx();
                 idx = type + KM_TYPE_NR * smp_processor_id();
 
                 if (cache_is_vivt())
@@ -101,6 +101,7 @@ void __kunmap_atomic(void *kvaddr)
 #else
                 (void) idx;  /* to kill a warning */
 #endif
+                kmap_atomic_idx_pop();
         } else if (vaddr >= PKMAP_ADDR(0) && vaddr < PKMAP_ADDR(LAST_PKMAP)) {
                 /* this address was obtained through kmap_high_get() */
                 kunmap_high(pte_page(pkmap_page_table[PKMAP_NR(vaddr)]));
diff --git a/arch/arm/plat-nomadik/include/plat/ste_dma40.h b/arch/arm/plat-nomadik/include/plat/ste_dma40.h
index 5fbde4b8dc12..93a812672d9a 100644
--- a/arch/arm/plat-nomadik/include/plat/ste_dma40.h
+++ b/arch/arm/plat-nomadik/include/plat/ste_dma40.h
@@ -14,7 +14,6 @@
 #include <linux/dmaengine.h>
 #include <linux/workqueue.h>
 #include <linux/interrupt.h>
-#include <linux/dmaengine.h>
 
 /* dev types for memcpy */
 #define STEDMA40_DEV_DST_MEMORY (-1)
diff --git a/arch/avr32/kernel/ptrace.c b/arch/avr32/kernel/ptrace.c
index 5e73c25f8f85..4aedcab7cd4b 100644
--- a/arch/avr32/kernel/ptrace.c
+++ b/arch/avr32/kernel/ptrace.c
@@ -146,9 +146,11 @@ static int ptrace_setregs(struct task_struct *tsk, const void __user *uregs)
         return ret;
 }
 
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request,
+                 unsigned long addr, unsigned long data)
 {
         int ret;
+        void __user *datap = (void __user *) data;
 
         switch (request) {
         /* Read the word at location addr in the child process */
@@ -158,8 +160,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 break;
 
         case PTRACE_PEEKUSR:
-                ret = ptrace_read_user(child, addr,
-                                       (unsigned long __user *)data);
+                ret = ptrace_read_user(child, addr, datap);
                 break;
 
         /* Write the word in data at location addr */
@@ -173,11 +174,11 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 break;
 
         case PTRACE_GETREGS:
-                ret = ptrace_getregs(child, (void __user *)data);
+                ret = ptrace_getregs(child, datap);
                 break;
 
         case PTRACE_SETREGS:
-                ret = ptrace_setregs(child, (const void __user *)data);
+                ret = ptrace_setregs(child, datap);
                 break;
 
         default:
diff --git a/arch/blackfin/kernel/ptrace.c b/arch/blackfin/kernel/ptrace.c
index b35839354130..75089f80855d 100644
--- a/arch/blackfin/kernel/ptrace.c
+++ b/arch/blackfin/kernel/ptrace.c
@@ -38,12 +38,13 @@
  * Get contents of register REGNO in task TASK.
  */
 static inline long
-get_reg(struct task_struct *task, long regno, unsigned long __user *datap)
+get_reg(struct task_struct *task, unsigned long regno,
+        unsigned long __user *datap)
 {
         long tmp;
         struct pt_regs *regs = task_pt_regs(task);
 
-        if (regno & 3 || regno > PT_LAST_PSEUDO || regno < 0)
+        if (regno & 3 || regno > PT_LAST_PSEUDO)
                 return -EIO;
 
         switch (regno) {
@@ -74,11 +75,11 @@ get_reg(struct task_struct *task, long regno, unsigned long __user *datap)
  * Write contents of register REGNO in task TASK.
  */
 static inline int
-put_reg(struct task_struct *task, long regno, unsigned long data)
+put_reg(struct task_struct *task, unsigned long regno, unsigned long data)
 {
         struct pt_regs *regs = task_pt_regs(task);
 
-        if (regno & 3 || regno > PT_LAST_PSEUDO || regno < 0)
+        if (regno & 3 || regno > PT_LAST_PSEUDO)
                 return -EIO;
 
         switch (regno) {
@@ -240,7 +241,8 @@ void user_disable_single_step(struct task_struct *child)
         clear_tsk_thread_flag(child, TIF_SINGLESTEP);
 }
 
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request,
+                 unsigned long addr, unsigned long data)
 {
         int ret;
         unsigned long __user *datap = (unsigned long __user *)data;
@@ -368,14 +370,14 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 return copy_regset_to_user(child, &user_bfin_native_view,
                                            REGSET_GENERAL,
                                            0, sizeof(struct pt_regs),
-                                           (void __user *)data);
+                                           datap);
 
         case PTRACE_SETREGS:
                 pr_debug("ptrace: PTRACE_SETREGS\n");
                 return copy_regset_from_user(child, &user_bfin_native_view,
                                              REGSET_GENERAL,
                                              0, sizeof(struct pt_regs),
-                                             (const void __user *)data);
+                                             datap);
 
         case_default:
         default:
diff --git a/arch/cris/arch-v10/kernel/ptrace.c b/arch/cris/arch-v10/kernel/ptrace.c
index e70c804e9377..320065f3cbe5 100644
--- a/arch/cris/arch-v10/kernel/ptrace.c
+++ b/arch/cris/arch-v10/kernel/ptrace.c
@@ -76,9 +76,11 @@ ptrace_disable(struct task_struct *child)
  * (in user space) where the result of the ptrace call is written (instead of
  * being returned).
  */
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request,
+                 unsigned long addr, unsigned long data)
 {
         int ret;
+        unsigned int regno = addr >> 2;
         unsigned long __user *datap = (unsigned long __user *)data;
 
         switch (request) {
@@ -93,10 +95,10 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                         unsigned long tmp;
 
                         ret = -EIO;
-                        if ((addr & 3) || addr < 0 || addr > PT_MAX << 2)
+                        if ((addr & 3) || regno > PT_MAX)
                                 break;
 
-                        tmp = get_reg(child, addr >> 2);
+                        tmp = get_reg(child, regno);
                         ret = put_user(tmp, datap);
                         break;
                 }
@@ -110,19 +112,17 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 /* Write the word at location address in the USER area. */
                 case PTRACE_POKEUSR:
                         ret = -EIO;
-                        if ((addr & 3) || addr < 0 || addr > PT_MAX << 2)
+                        if ((addr & 3) || regno > PT_MAX)
                                 break;
 
-                        addr >>= 2;
-
-                        if (addr == PT_DCCR) {
+                        if (regno == PT_DCCR) {
                                 /* don't allow the tracing process to change stuff like
                                  * interrupt enable, kernel/user bit, dma enables etc.
                                  */
                                 data &= DCCR_MASK;
                                 data |= get_reg(child, PT_DCCR) & ~DCCR_MASK;
                         }
-                        if (put_reg(child, addr, data))
+                        if (put_reg(child, regno, data))
                                 break;
                         ret = 0;
                         break;
@@ -141,7 +141,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                                         break;
                                 }
                                 
-                                data += sizeof(long);
+                                datap++;
                         }
 
                         break;
@@ -165,7 +165,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                                 }
                                 
                                 put_reg(child, i, tmp);
-                                data += sizeof(long);
+                                datap++;
                         }
                         
                         break;
diff --git a/arch/cris/arch-v32/kernel/ptrace.c b/arch/cris/arch-v32/kernel/ptrace.c
index f4ebd1e7d0f5..511ece94a574 100644
--- a/arch/cris/arch-v32/kernel/ptrace.c
+++ b/arch/cris/arch-v32/kernel/ptrace.c
@@ -126,9 +126,11 @@ ptrace_disable(struct task_struct *child)
 }
 
 
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request,
+                 unsigned long addr, unsigned long data)
 {
         int ret;
+        unsigned int regno = addr >> 2;
         unsigned long __user *datap = (unsigned long __user *)data;
 
         switch (request) {
@@ -163,10 +165,10 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                         unsigned long tmp;
 
                         ret = -EIO;
-                        if ((addr & 3) || addr < 0 || addr > PT_MAX << 2)
+                        if ((addr & 3) || regno > PT_MAX)
                                 break;
 
-                        tmp = get_reg(child, addr >> 2);
+                        tmp = get_reg(child, regno);
                         ret = put_user(tmp, datap);
                         break;
                 }
@@ -180,19 +182,17 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 /* Write the word at location address in the USER area. */
                 case PTRACE_POKEUSR:
                         ret = -EIO;
-                        if ((addr & 3) || addr < 0 || addr > PT_MAX << 2)
+                        if ((addr & 3) || regno > PT_MAX)
                                 break;
 
-                        addr >>= 2;
-
-                        if (addr == PT_CCS) {
+                        if (regno == PT_CCS) {
                                 /* don't allow the tracing process to change stuff like
                                  * interrupt enable, kernel/user bit, dma enables etc.
                                  */
                                 data &= CCS_MASK;
                                 data |= get_reg(child, PT_CCS) & ~CCS_MASK;
                         }
-                        if (put_reg(child, addr, data))
+                        if (put_reg(child, regno, data))
                                 break;
                         ret = 0;
                         break;
diff --git a/arch/frv/kernel/ptrace.c b/arch/frv/kernel/ptrace.c
index fac028936a04..9d68f7fac730 100644
--- a/arch/frv/kernel/ptrace.c
+++ b/arch/frv/kernel/ptrace.c
@@ -254,23 +254,26 @@ void ptrace_disable(struct task_struct *child)
         user_disable_single_step(child);
 }
 
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request,
+                 unsigned long addr, unsigned long data)
 {
         unsigned long tmp;
         int ret;
+        int regno = addr >> 2;
+        unsigned long __user *datap = (unsigned long __user *) data;
 
         switch (request) {
                 /* read the word at location addr in the USER area. */
         case PTRACE_PEEKUSR: {
                 tmp = 0;
                 ret = -EIO;
-                if ((addr & 3) || addr < 0)
+                if (addr & 3)
                         break;
 
                 ret = 0;
-                switch (addr >> 2) {
+                switch (regno) {
                 case 0 ... PT__END - 1:
-                        tmp = get_reg(child, addr >> 2);
+                        tmp = get_reg(child, regno);
                         break;
 
                 case PT__END + 0:
@@ -299,23 +302,18 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 }
 
                 if (ret == 0)
-                        ret = put_user(tmp, (unsigned long *) data);
+                        ret = put_user(tmp, datap);
                 break;
         }
 
         case PTRACE_POKEUSR: /* write the word at location addr in the USER area */
                 ret = -EIO;
-                if ((addr & 3) || addr < 0)
+                if (addr & 3)
                         break;
 
-                ret = 0;
-                switch (addr >> 2) {
+                switch (regno) {
                 case 0 ... PT__END - 1:
-                        ret = put_reg(child, addr >> 2, data);
-                        break;
-
-                default:
-                        ret = -EIO;
+                        ret = put_reg(child, regno, data);
                         break;
                 }
                 break;
@@ -324,25 +322,25 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 return copy_regset_to_user(child, &user_frv_native_view,
                                            REGSET_GENERAL,
                                            0, sizeof(child->thread.user->i),
-                                           (void __user *)data);
+                                           datap);
 
         case PTRACE_SETREGS:    /* Set all integer regs in the child. */
                 return copy_regset_from_user(child, &user_frv_native_view,
                                              REGSET_GENERAL,
                                              0, sizeof(child->thread.user->i),
-                                             (const void __user *)data);
+                                             datap);
 
         case PTRACE_GETFPREGS:  /* Get the child FP/Media state. */
                 return copy_regset_to_user(child, &user_frv_native_view,
                                            REGSET_FPMEDIA,
                                            0, sizeof(child->thread.user->f),
-                                           (void __user *)data);
+                                           datap);
 
         case PTRACE_SETFPREGS:  /* Set the child FP/Media state. */
                 return copy_regset_from_user(child, &user_frv_native_view,
                                              REGSET_FPMEDIA,
                                              0, sizeof(child->thread.user->f),
-                                             (const void __user *)data);
+                                             datap);
 
         default:
                 ret = ptrace_request(child, request, addr, data);
diff --git a/arch/frv/mm/highmem.c b/arch/frv/mm/highmem.c
index 61088dcc1594..fd7fcd4c2e33 100644
--- a/arch/frv/mm/highmem.c
+++ b/arch/frv/mm/highmem.c
@@ -68,7 +68,7 @@ EXPORT_SYMBOL(__kmap_atomic);
 
 void __kunmap_atomic(void *kvaddr)
 {
-        int type = kmap_atomic_idx_pop();
+        int type = kmap_atomic_idx();
         switch (type) {
         case 0:         __kunmap_atomic_primary(4, 6);  break;
         case 1:         __kunmap_atomic_primary(5, 7);  break;
@@ -83,6 +83,7 @@ void __kunmap_atomic(void *kvaddr)
         default:
                 BUG();
         }
+        kmap_atomic_idx_pop();
         pagefault_enable();
 }
 EXPORT_SYMBOL(__kunmap_atomic);
diff --git a/arch/h8300/kernel/ptrace.c b/arch/h8300/kernel/ptrace.c
index df114122ebdf..497fa89b5df4 100644
--- a/arch/h8300/kernel/ptrace.c
+++ b/arch/h8300/kernel/ptrace.c
@@ -50,27 +50,29 @@ void ptrace_disable(struct task_struct *child)
         user_disable_single_step(child);
 }
 
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request,
+                 unsigned long addr, unsigned long data)
 {
         int ret;
+        int regno = addr >> 2;
+        unsigned long __user *datap = (unsigned long __user *) data;
 
         switch (request) {
         /* read the word at location addr in the USER area. */
                 case PTRACE_PEEKUSR: {
                         unsigned long tmp = 0;
                         
-                        if ((addr & 3) || addr < 0 || addr >= sizeof(struct user)) {
+                        if ((addr & 3) || addr >= sizeof(struct user)) {
                                 ret = -EIO;
                                 break ;
                         }
                         
                         ret = 0;  /* Default return condition */
-                        addr = addr >> 2; /* temporary hack. */
 
-                        if (addr < H8300_REGS_NO)
-                                tmp = h8300_get_reg(child, addr);
+                        if (regno < H8300_REGS_NO)
+                                tmp = h8300_get_reg(child, regno);
                         else {
-                                switch(addr) {
+                                switch (regno) {
                                 case 49:
                                         tmp = child->mm->start_code;
                                         break ;
@@ -88,24 +90,23 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                                 }
                         }
                         if (!ret)
-                                ret = put_user(tmp,(unsigned long *) data);
+                                ret = put_user(tmp, datap);
                         break ;
                 }
 
       /* when I and D space are separate, this will have to be fixed. */
                 case PTRACE_POKEUSR: /* write the word at location addr in the USER area */
-                        if ((addr & 3) || addr < 0 || addr >= sizeof(struct user)) {
+                        if ((addr & 3) || addr >= sizeof(struct user)) {
                                 ret = -EIO;
                                 break ;
                         }
-                        addr = addr >> 2; /* temporary hack. */
                             
-                        if (addr == PT_ORIG_ER0) {
+                        if (regno == PT_ORIG_ER0) {
                                 ret = -EIO;
                                 break ;
                         }
-                        if (addr < H8300_REGS_NO) {
-                                ret = h8300_put_reg(child, addr, data);
+                        if (regno < H8300_REGS_NO) {
+                                ret = h8300_put_reg(child, regno, data);
                                 break ;
                         }
                         ret = -EIO;
@@ -116,11 +117,11 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                         unsigned long tmp;
                         for (i = 0; i < H8300_REGS_NO; i++) {
                             tmp = h8300_get_reg(child, i);
-                            if (put_user(tmp, (unsigned long *) data)) {
+                            if (put_user(tmp, datap)) {
                                 ret = -EFAULT;
                                 break;
                             }
-                            data += sizeof(long);
+                            datap++;
                         }
                         ret = 0;
                         break;
@@ -130,12 +131,12 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                         int i;
                         unsigned long tmp;
                         for (i = 0; i < H8300_REGS_NO; i++) {
-                            if (get_user(tmp, (unsigned long *) data)) {
+                            if (get_user(tmp, datap)) {
                                 ret = -EFAULT;
                                 break;
                             }
                             h8300_put_reg(child, i, tmp);
-                            data += sizeof(long);
+                            datap++;
                         }
                         ret = 0;
                         break;
diff --git a/arch/ia64/include/asm/cputime.h b/arch/ia64/include/asm/cputime.h
index 7fa8a8594660..6073b187528a 100644
--- a/arch/ia64/include/asm/cputime.h
+++ b/arch/ia64/include/asm/cputime.h
@@ -56,10 +56,10 @@ typedef u64 cputime64_t;
 #define jiffies64_to_cputime64(__jif)   ((__jif) * (NSEC_PER_SEC / HZ))
 
 /*
- * Convert cputime <-> milliseconds
+ * Convert cputime <-> microseconds
  */
-#define cputime_to_msecs(__ct)          ((__ct) / NSEC_PER_MSEC)
-#define msecs_to_cputime(__msecs)       ((__msecs) * NSEC_PER_MSEC)
+#define cputime_to_usecs(__ct)          ((__ct) / NSEC_PER_USEC)
+#define usecs_to_cputime(__usecs)       ((__usecs) * NSEC_PER_USEC)
 
 /*
  * Convert cputime <-> seconds
diff --git a/arch/ia64/kernel/ptrace.c b/arch/ia64/kernel/ptrace.c
index 7c7909f9bc93..8848f43d819e 100644
--- a/arch/ia64/kernel/ptrace.c
+++ b/arch/ia64/kernel/ptrace.c
@@ -1177,7 +1177,8 @@ ptrace_disable (struct task_struct *child)
 }
 
 long
-arch_ptrace (struct task_struct *child, long request, long addr, long data)
+arch_ptrace (struct task_struct *child, long request,
+             unsigned long addr, unsigned long data)
 {
         switch (request) {
         case PTRACE_PEEKTEXT:
diff --git a/arch/m32r/kernel/ptrace.c b/arch/m32r/kernel/ptrace.c
index 0021ade4cba8..20743754f2b2 100644
--- a/arch/m32r/kernel/ptrace.c
+++ b/arch/m32r/kernel/ptrace.c
@@ -622,9 +622,11 @@ void ptrace_disable(struct task_struct *child)
 }
 
 long
-arch_ptrace(struct task_struct *child, long request, long addr, long data)
+arch_ptrace(struct task_struct *child, long request,
+            unsigned long addr, unsigned long data)
 {
         int ret;
+        unsigned long __user *datap = (unsigned long __user *) data;
 
         switch (request) {
         /*
@@ -639,8 +641,7 @@ arch_ptrace(struct task_struct *child, long request, long addr, long data)
          * read the word at location addr in the USER area.
          */
         case PTRACE_PEEKUSR:
-                ret = ptrace_read_user(child, addr,
-                                       (unsigned long __user *)data);
+                ret = ptrace_read_user(child, addr, datap);
                 break;
 
         /*
@@ -661,11 +662,11 @@ arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 break;
 
         case PTRACE_GETREGS:
-                ret = ptrace_getregs(child, (void __user *)data);
+                ret = ptrace_getregs(child, datap);
                 break;
 
         case PTRACE_SETREGS:
-                ret = ptrace_setregs(child, (void __user *)data);
+                ret = ptrace_setregs(child, datap);
                 break;
 
         default:
diff --git a/arch/m68k/kernel/ptrace.c b/arch/m68k/kernel/ptrace.c
index 616e59752c29..0b252683cefb 100644
--- a/arch/m68k/kernel/ptrace.c
+++ b/arch/m68k/kernel/ptrace.c
@@ -156,55 +156,57 @@ void user_disable_single_step(struct task_struct *child)
         singlestep_disable(child);
 }
 
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request,
+                 unsigned long addr, unsigned long data)
 {
         unsigned long tmp;
         int i, ret = 0;
+        int regno = addr >> 2; /* temporary hack. */
+        unsigned long __user *datap = (unsigned long __user *) data;
 
         switch (request) {
         /* read the word at location addr in the USER area. */
         case PTRACE_PEEKUSR:
                 if (addr & 3)
                         goto out_eio;
-                addr >>= 2;     /* temporary hack. */
 
-                if (addr >= 0 && addr < 19) {
-                        tmp = get_reg(child, addr);
-                } else if (addr >= 21 && addr < 49) {
-                        tmp = child->thread.fp[addr - 21];
+                if (regno >= 0 && regno < 19) {
+                        tmp = get_reg(child, regno);
+                } else if (regno >= 21 && regno < 49) {
+                        tmp = child->thread.fp[regno - 21];
                         /* Convert internal fpu reg representation
                          * into long double format
                          */
-                        if (FPU_IS_EMU && (addr < 45) && !(addr % 3))
+                        if (FPU_IS_EMU && (regno < 45) && !(regno % 3))
                                 tmp = ((tmp & 0xffff0000) << 15) |
                                       ((tmp & 0x0000ffff) << 16);
                 } else
                         goto out_eio;
-                ret = put_user(tmp, (unsigned long *)data);
+                ret = put_user(tmp, datap);
                 break;
 
-        case PTRACE_POKEUSR:    /* write the word at location addr in the USER area */
+        case PTRACE_POKEUSR:
+        /* write the word at location addr in the USER area */
                 if (addr & 3)
                         goto out_eio;
-                addr >>= 2;     /* temporary hack. */
 
-                if (addr == PT_SR) {
+                if (regno == PT_SR) {
                         data &= SR_MASK;
                         data |= get_reg(child, PT_SR) & ~SR_MASK;
                 }
-                if (addr >= 0 && addr < 19) {
-                        if (put_reg(child, addr, data))
+                if (regno >= 0 && regno < 19) {
+                        if (put_reg(child, regno, data))
                                 goto out_eio;
-                } else if (addr >= 21 && addr < 48) {
+                } else if (regno >= 21 && regno < 48) {
                         /* Convert long double format
                          * into internal fpu reg representation
                          */
-                        if (FPU_IS_EMU && (addr < 45) && !(addr % 3)) {
-                                data = (unsigned long)data << 15;
+                        if (FPU_IS_EMU && (regno < 45) && !(regno % 3)) {
+                                data <<= 15;
                                 data = (data & 0xffff0000) |
                                        ((data & 0x0000ffff) >> 1);
                         }
-                        child->thread.fp[addr - 21] = data;
+                        child->thread.fp[regno - 21] = data;
                 } else
                         goto out_eio;
                 break;
@@ -212,16 +214,16 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
         case PTRACE_GETREGS:    /* Get all gp regs from the child. */
                 for (i = 0; i < 19; i++) {
                         tmp = get_reg(child, i);
-                        ret = put_user(tmp, (unsigned long *)data);
+                        ret = put_user(tmp, datap);
                         if (ret)
                                 break;
-                        data += sizeof(long);
+                        datap++;
                 }
                 break;
 
         case PTRACE_SETREGS:    /* Set all gp regs in the child. */
                 for (i = 0; i < 19; i++) {
-                        ret = get_user(tmp, (unsigned long *)data);
+                        ret = get_user(tmp, datap);
                         if (ret)
                                 break;
                         if (i == PT_SR) {
@@ -229,25 +231,24 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                                 tmp |= get_reg(child, PT_SR) & ~SR_MASK;
                         }
                         put_reg(child, i, tmp);
-                        data += sizeof(long);
+                        datap++;
                 }
                 break;
 
         case PTRACE_GETFPREGS:  /* Get the child FPU state. */
-                if (copy_to_user((void *)data, &child->thread.fp,
+                if (copy_to_user(datap, &child->thread.fp,
                                  sizeof(struct user_m68kfp_struct)))
                         ret = -EFAULT;
                 break;
 
         case PTRACE_SETFPREGS:  /* Set the child FPU state. */
-                if (copy_from_user(&child->thread.fp, (void *)data,
+                if (copy_from_user(&child->thread.fp, datap,
                                    sizeof(struct user_m68kfp_struct)))
                         ret = -EFAULT;
                 break;
 
         case PTRACE_GET_THREAD_AREA:
-                ret = put_user(task_thread_info(child)->tp_value,
-                               (unsigned long __user *)data);
+                ret = put_user(task_thread_info(child)->tp_value, datap);
                 break;
 
         default:
diff --git a/arch/m68knommu/kernel/ptrace.c b/arch/m68knommu/kernel/ptrace.c
index 6fe7c38cd556..6709fb707335 100644
--- a/arch/m68knommu/kernel/ptrace.c
+++ b/arch/m68knommu/kernel/ptrace.c
@@ -112,9 +112,12 @@ void ptrace_disable(struct task_struct *child)
         user_disable_single_step(child);
 }
 
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request,
+                 unsigned long addr, unsigned long data)
 {
         int ret;
+        int regno = addr >> 2;
+        unsigned long __user *datap = (unsigned long __user *) data;
 
         switch (request) {
                 /* read the word at location addr in the USER area. */
@@ -122,53 +125,48 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                         unsigned long tmp;
                         
                         ret = -EIO;
-                        if ((addr & 3) || addr < 0 ||
-                            addr > sizeof(struct user) - 3)
+                        if ((addr & 3) || addr > sizeof(struct user) - 3)
                                 break;
                         
                         tmp = 0;  /* Default return condition */
-                        addr = addr >> 2; /* temporary hack. */
                         ret = -EIO;
-                        if (addr < 19) {
-                                tmp = get_reg(child, addr);
-                                if (addr == PT_SR)
+                        if (regno < 19) {
+                                tmp = get_reg(child, regno);
+                                if (regno == PT_SR)
                                         tmp >>= 16;
-                        } else if (addr >= 21 && addr < 49) {
-                                tmp = child->thread.fp[addr - 21];
-                        } else if (addr == 49) {
+                        } else if (regno >= 21 && regno < 49) {
+                                tmp = child->thread.fp[regno - 21];
+                        } else if (regno == 49) {
                                 tmp = child->mm->start_code;
-                        } else if (addr == 50) {
+                        } else if (regno == 50) {
                                 tmp = child->mm->start_data;
-                        } else if (addr == 51) {
+                        } else if (regno == 51) {
                                 tmp = child->mm->end_code;
                         } else
                                 break;
-                        ret = put_user(tmp,(unsigned long *) data);
+                        ret = put_user(tmp, datap);
                         break;
                 }
 
                 case PTRACE_POKEUSR: /* write the word at location addr in the USER area */
                         ret = -EIO;
-                        if ((addr & 3) || addr < 0 ||
-                            addr > sizeof(struct user) - 3)
+                        if ((addr & 3) || addr > sizeof(struct user) - 3)
                                 break;
 
-                        addr = addr >> 2; /* temporary hack. */
-                            
-                        if (addr == PT_SR) {
+                        if (regno == PT_SR) {
                                 data &= SR_MASK;
                                 data <<= 16;
                                 data |= get_reg(child, PT_SR) & ~(SR_MASK << 16);
                         }
-                        if (addr < 19) {
-                                if (put_reg(child, addr, data))
+                        if (regno < 19) {
+                                if (put_reg(child, regno, data))
                                         break;
                                 ret = 0;
                                 break;
                         }
-                        if (addr >= 21 && addr < 48)
+                        if (regno >= 21 && regno < 48)
                         {
-                                child->thread.fp[addr - 21] = data;
+                                child->thread.fp[regno - 21] = data;
                                 ret = 0;
                         }
                         break;
@@ -180,11 +178,11 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                             tmp = get_reg(child, i);
                             if (i == PT_SR)
                                 tmp >>= 16;
-                            if (put_user(tmp, (unsigned long *) data)) {
+                            if (put_user(tmp, datap)) {
                                 ret = -EFAULT;
                                 break;
                             }
-                            data += sizeof(long);
+                            datap++;
                         }
                         ret = 0;
                         break;
@@ -194,7 +192,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                         int i;
                         unsigned long tmp;
                         for (i = 0; i < 19; i++) {
-                            if (get_user(tmp, (unsigned long *) data)) {
+                            if (get_user(tmp, datap)) {
                                 ret = -EFAULT;
                                 break;
                             }
@@ -204,7 +202,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                                 tmp |= get_reg(child, PT_SR) & ~(SR_MASK << 16);
                             }
                             put_reg(child, i, tmp);
-                            data += sizeof(long);
+                            datap++;
                         }
                         ret = 0;
                         break;
@@ -213,7 +211,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 #ifdef PTRACE_GETFPREGS
                 case PTRACE_GETFPREGS: { /* Get the child FPU state. */
                         ret = 0;
-                        if (copy_to_user((void *)data, &child->thread.fp,
+                        if (copy_to_user(datap, &child->thread.fp,
                                          sizeof(struct user_m68kfp_struct)))
                                 ret = -EFAULT;
                         break;
@@ -223,7 +221,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 #ifdef PTRACE_SETFPREGS
                 case PTRACE_SETFPREGS: { /* Set the child FPU state. */
                         ret = 0;
-                        if (copy_from_user(&child->thread.fp, (void *)data,
+                        if (copy_from_user(&child->thread.fp, datap,
                                            sizeof(struct user_m68kfp_struct)))
                                 ret = -EFAULT;
                         break;
@@ -231,8 +229,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 #endif
 
         case PTRACE_GET_THREAD_AREA:
-                ret = put_user(task_thread_info(child)->tp_value,
-                               (unsigned long __user *)data);
+                ret = put_user(task_thread_info(child)->tp_value, datap);
                 break;
 
                 default:
diff --git a/arch/microblaze/kernel/ptrace.c b/arch/microblaze/kernel/ptrace.c
index dc03ffc8174a..05ac8cc975d5 100644
--- a/arch/microblaze/kernel/ptrace.c
+++ b/arch/microblaze/kernel/ptrace.c
@@ -73,7 +73,8 @@ static microblaze_reg_t *reg_save_addr(unsigned reg_offs,
         return (microblaze_reg_t *)((char *)regs + reg_offs);
 }
 
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request,
+                 unsigned long addr, unsigned long data)
 {
         int rval;
         unsigned long val = 0;
@@ -99,7 +100,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                         } else {
                                 rval = -EIO;
                         }
-                } else if (addr >= 0 && addr < PT_SIZE && (addr & 0x3) == 0) {
+                } else if (addr < PT_SIZE && (addr & 0x3) == 0) {
                         microblaze_reg_t *reg_addr = reg_save_addr(addr, child);
                         if (request == PTRACE_PEEKUSR)
                                 val = *reg_addr;
diff --git a/arch/mips/include/asm/pci/bridge.h b/arch/mips/include/asm/pci/bridge.h
index 5f4b9d4e4114..f1f508e4f971 100644
--- a/arch/mips/include/asm/pci/bridge.h
+++ b/arch/mips/include/asm/pci/bridge.h
@@ -839,7 +839,7 @@ struct bridge_controller {
         nasid_t                 nasid;
         unsigned int            widget_id;
         unsigned int            irq_cpu;
-        dma64_addr_t            baddr;
+        u64                     baddr;
         unsigned int            pci_int[8];
 };
 
diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
index c8777333e198..d21c388c0116 100644
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -255,9 +255,13 @@ int ptrace_set_watch_regs(struct task_struct *child,
         return 0;
 }
 
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request,
+                 unsigned long addr, unsigned long data)
 {
         int ret;
+        void __user *addrp = (void __user *) addr;
+        void __user *datavp = (void __user *) data;
+        unsigned long __user *datalp = (void __user *) data;
 
         switch (request) {
         /* when I and D space are separate, these will need to be fixed. */
@@ -386,7 +390,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                         ret = -EIO;
                         goto out;
                 }
-                ret = put_user(tmp, (unsigned long __user *) data);
+                ret = put_user(tmp, datalp);
                 break;
         }
 
@@ -478,34 +482,31 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 }
 
         case PTRACE_GETREGS:
-                ret = ptrace_getregs(child, (__s64 __user *) data);
+                ret = ptrace_getregs(child, datavp);
                 break;
 
         case PTRACE_SETREGS:
-                ret = ptrace_setregs(child, (__s64 __user *) data);
+                ret = ptrace_setregs(child, datavp);
                 break;
 
         case PTRACE_GETFPREGS:
-                ret = ptrace_getfpregs(child, (__u32 __user *) data);
+                ret = ptrace_getfpregs(child, datavp);
                 break;
 
         case PTRACE_SETFPREGS:
-                ret = ptrace_setfpregs(child, (__u32 __user *) data);
+                ret = ptrace_setfpregs(child, datavp);
                 break;
 
         case PTRACE_GET_THREAD_AREA:
-                ret = put_user(task_thread_info(child)->tp_value,
-                                (unsigned long __user *) data);
+                ret = put_user(task_thread_info(child)->tp_value, datalp);
                 break;
 
         case PTRACE_GET_WATCH_REGS:
-                ret = ptrace_get_watch_regs(child,
-                                        (struct pt_watch_regs __user *) addr);
+                ret = ptrace_get_watch_regs(child, addrp);
                 break;
 
         case PTRACE_SET_WATCH_REGS:
-                ret = ptrace_set_watch_regs(child,
-                                        (struct pt_watch_regs __user *) addr);
+                ret = ptrace_set_watch_regs(child, addrp);
                 break;
 
         default:
diff --git a/arch/mips/mm/highmem.c b/arch/mips/mm/highmem.c
index 1e69b1fb4b85..3634c7ea06ac 100644
--- a/arch/mips/mm/highmem.c
+++ b/arch/mips/mm/highmem.c
@@ -74,7 +74,7 @@ void __kunmap_atomic(void *kvaddr)
                 return;
         }
 
-        type = kmap_atomic_idx_pop();
+        type = kmap_atomic_idx();
 #ifdef CONFIG_DEBUG_HIGHMEM
         {
                 int idx = type + KM_TYPE_NR * smp_processor_id();
@@ -89,6 +89,7 @@ void __kunmap_atomic(void *kvaddr)
                 local_flush_tlb_one(vaddr);
         }
 #endif
+        kmap_atomic_idx_pop();
         pagefault_enable();
 }
 EXPORT_SYMBOL(__kunmap_atomic);
diff --git a/arch/mn10300/include/asm/highmem.h b/arch/mn10300/include/asm/highmem.h
index f577ba2268ca..e2155e686451 100644
--- a/arch/mn10300/include/asm/highmem.h
+++ b/arch/mn10300/include/asm/highmem.h
@@ -101,7 +101,7 @@ static inline void __kunmap_atomic(unsigned long vaddr)
                 return;
         }
 
-        type = kmap_atomic_idx_pop();
+        type = kmap_atomic_idx();
 
 #if HIGHMEM_DEBUG
         {
@@ -119,6 +119,8 @@ static inline void __kunmap_atomic(unsigned long vaddr)
                 __flush_tlb_one(vaddr);
         }
 #endif
+
+        kmap_atomic_idx_pop();
         pagefault_enable();
 }
 #endif /* __KERNEL__ */
diff --git a/arch/mn10300/kernel/ptrace.c b/arch/mn10300/kernel/ptrace.c
index cf847dabc1bd..5c0b07e61006 100644
--- a/arch/mn10300/kernel/ptrace.c
+++ b/arch/mn10300/kernel/ptrace.c
@@ -295,31 +295,31 @@ void ptrace_disable(struct task_struct *child)
 /*
  * handle the arch-specific side of process tracing
  */
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request,
+                 unsigned long addr, unsigned long data)
 {
         unsigned long tmp;
         int ret;
+        unsigned long __user *datap = (unsigned long __user *) data;
 
         switch (request) {
         /* read the word at location addr in the USER area. */
         case PTRACE_PEEKUSR:
                 ret = -EIO;
-                if ((addr & 3) || addr < 0 ||
-                    addr > sizeof(struct user) - 3)
+                if ((addr & 3) || addr > sizeof(struct user) - 3)
                         break;
 
                 tmp = 0;  /* Default return condition */
                 if (addr < NR_PTREGS << 2)
                         tmp = get_stack_long(child,
                                              ptrace_regid_to_frame[addr]);
-                ret = put_user(tmp, (unsigned long *) data);
+                ret = put_user(tmp, datap);
                 break;
 
                 /* write the word at location addr in the USER area */
         case PTRACE_POKEUSR:
                 ret = -EIO;
-                if ((addr & 3) || addr < 0 ||
-                    addr > sizeof(struct user) - 3)
+                if ((addr & 3) || addr > sizeof(struct user) - 3)
                         break;
 
                 ret = 0;
@@ -332,25 +332,25 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 return copy_regset_to_user(child, &user_mn10300_native_view,
                                            REGSET_GENERAL,
                                            0, NR_PTREGS * sizeof(long),
-                                           (void __user *)data);
+                                           datap);
 
         case PTRACE_SETREGS:    /* Set all integer regs in the child. */
                 return copy_regset_from_user(child, &user_mn10300_native_view,
                                              REGSET_GENERAL,
                                              0, NR_PTREGS * sizeof(long),
-                                             (const void __user *)data);
+                                             datap);
 
         case PTRACE_GETFPREGS:  /* Get the child FPU state. */
                 return copy_regset_to_user(child, &user_mn10300_native_view,
                                            REGSET_FPU,
                                            0, sizeof(struct fpu_state_struct),
-                                           (void __user *)data);
+                                           datap);
 
         case PTRACE_SETFPREGS:  /* Set the child FPU state. */
                 return copy_regset_from_user(child, &user_mn10300_native_view,
                                              REGSET_FPU,
                                              0, sizeof(struct fpu_state_struct),
-                                             (const void __user *)data);
+                                             datap);
 
         default:
                 ret = ptrace_request(child, request, addr, data);
diff --git a/arch/parisc/kernel/ptrace.c b/arch/parisc/kernel/ptrace.c
index c4f49e45129d..2905b1f52d30 100644
--- a/arch/parisc/kernel/ptrace.c
+++ b/arch/parisc/kernel/ptrace.c
@@ -110,7 +110,8 @@ void user_enable_block_step(struct task_struct *task)
         pa_psw(task)->l = 0;
 }
 
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request,
+                 unsigned long addr, unsigned long data)
 {
         unsigned long tmp;
         long ret = -EIO;
@@ -120,11 +121,11 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
         /* Read the word at location addr in the USER area.  For ptraced
            processes, the kernel saves all regs on a syscall. */
         case PTRACE_PEEKUSR:
-                if ((addr & (sizeof(long)-1)) ||
-                    (unsigned long) addr >= sizeof(struct pt_regs))
+                if ((addr & (sizeof(unsigned long)-1)) ||
+                     addr >= sizeof(struct pt_regs))
                         break;
                 tmp = *(unsigned long *) ((char *) task_regs(child) + addr);
-                ret = put_user(tmp, (unsigned long *) data);
+                ret = put_user(tmp, (unsigned long __user *) data);
                 break;
 
         /* Write the word at location addr in the USER area.  This will need
@@ -151,8 +152,8 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                         break;
                 }
 
-                if ((addr & (sizeof(long)-1)) ||
-                    (unsigned long) addr >= sizeof(struct pt_regs))
+                if ((addr & (sizeof(unsigned long)-1)) ||
+                     addr >= sizeof(struct pt_regs))
                         break;
                 if ((addr >= PT_GR1 && addr <= PT_GR31) ||
                                 addr == PT_IAOQ0 || addr == PT_IAOQ1 ||
diff --git a/arch/powerpc/include/asm/cputime.h b/arch/powerpc/include/asm/cputime.h
index 8bdc6a9e5773..1cf20bdfbeca 100644
--- a/arch/powerpc/include/asm/cputime.h
+++ b/arch/powerpc/include/asm/cputime.h
@@ -124,23 +124,23 @@ static inline u64 cputime64_to_jiffies64(const cputime_t ct)
 }
 
 /*
- * Convert cputime <-> milliseconds
+ * Convert cputime <-> microseconds
  */
 extern u64 __cputime_msec_factor;
 
-static inline unsigned long cputime_to_msecs(const cputime_t ct)
+static inline unsigned long cputime_to_usecs(const cputime_t ct)
 {
-        return mulhdu(ct, __cputime_msec_factor);
+        return mulhdu(ct, __cputime_msec_factor) * USEC_PER_MSEC;
 }
 
-static inline cputime_t msecs_to_cputime(const unsigned long ms)
+static inline cputime_t usecs_to_cputime(const unsigned long us)
 {
         cputime_t ct;
         unsigned long sec;
 
         /* have to be a little careful about overflow */
-        ct = ms % 1000;
-        sec = ms / 1000;
+        ct = us % 1000000;
+        sec = us / 1000000;
         if (ct) {
                 ct *= tb_ticks_per_sec;
                 do_div(ct, 1000);
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index 286d9783d93f..a9b32967cff6 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -1406,37 +1406,42 @@ static long ppc_del_hwdebug(struct task_struct *child, long addr, long data)
  * Here are the old "legacy" powerpc specific getregs/setregs ptrace calls,
  * we mark them as obsolete now, they will be removed in a future version
  */
-static long arch_ptrace_old(struct task_struct *child, long request, long addr,
-                            long data)
+static long arch_ptrace_old(struct task_struct *child, long request,
+                            unsigned long addr, unsigned long data)
 {
+        void __user *datavp = (void __user *) data;
+
         switch (request) {
         case PPC_PTRACE_GETREGS:        /* Get GPRs 0 - 31. */
                 return copy_regset_to_user(child, &user_ppc_native_view,
                                            REGSET_GPR, 0, 32 * sizeof(long),
-                                           (void __user *) data);
+                                           datavp);
 
         case PPC_PTRACE_SETREGS:        /* Set GPRs 0 - 31. */
                 return copy_regset_from_user(child, &user_ppc_native_view,
                                              REGSET_GPR, 0, 32 * sizeof(long),
-                                             (const void __user *) data);
+                                             datavp);
 
         case PPC_PTRACE_GETFPREGS:      /* Get FPRs 0 - 31. */
                 return copy_regset_to_user(child, &user_ppc_native_view,
                                            REGSET_FPR, 0, 32 * sizeof(double),
-                                           (void __user *) data);
+                                           datavp);
 
         case PPC_PTRACE_SETFPREGS:      /* Set FPRs 0 - 31. */
                 return copy_regset_from_user(child, &user_ppc_native_view,
                                              REGSET_FPR, 0, 32 * sizeof(double),
-                                             (const void __user *) data);
+                                             datavp);
         }
 
         return -EPERM;
 }
 
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request,
+                 unsigned long addr, unsigned long data)
 {
         int ret = -EPERM;
+        void __user *datavp = (void __user *) data;
+        unsigned long __user *datalp = datavp;
 
         switch (request) {
         /* read the word at location addr in the USER area. */
@@ -1446,11 +1451,11 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 ret = -EIO;
                 /* convert to index and check */
 #ifdef CONFIG_PPC32
-                index = (unsigned long) addr >> 2;
+                index = addr >> 2;
                 if ((addr & 3) || (index > PT_FPSCR)
                     || (child->thread.regs == NULL))
 #else
-                index = (unsigned long) addr >> 3;
+                index = addr >> 3;
                 if ((addr & 7) || (index > PT_FPSCR))
 #endif
                         break;
@@ -1463,7 +1468,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                         tmp = ((unsigned long *)child->thread.fpr)
                                 [TS_FPRWIDTH * (index - PT_FPR0)];
                 }
-                ret = put_user(tmp,(unsigned long __user *) data);
+                ret = put_user(tmp, datalp);
                 break;
         }
 
@@ -1474,11 +1479,11 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 ret = -EIO;
                 /* convert to index and check */
 #ifdef CONFIG_PPC32
-                index = (unsigned long) addr >> 2;
+                index = addr >> 2;
                 if ((addr & 3) || (index > PT_FPSCR)
                     || (child->thread.regs == NULL))
 #else
-                index = (unsigned long) addr >> 3;
+                index = addr >> 3;
                 if ((addr & 7) || (index > PT_FPSCR))
 #endif
                         break;
@@ -1525,11 +1530,11 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 dbginfo.features = 0;
 #endif /* CONFIG_PPC_ADV_DEBUG_REGS */
 
-                if (!access_ok(VERIFY_WRITE, data,
+                if (!access_ok(VERIFY_WRITE, datavp,
                                sizeof(struct ppc_debug_info)))
                         return -EFAULT;
-                ret = __copy_to_user((struct ppc_debug_info __user *)data,
-                                     &dbginfo, sizeof(struct ppc_debug_info)) ?
+                ret = __copy_to_user(datavp, &dbginfo,
+                                     sizeof(struct ppc_debug_info)) ?
                       -EFAULT : 0;
                 break;
         }
@@ -1537,11 +1542,10 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
         case PPC_PTRACE_SETHWDEBUG: {
                 struct ppc_hw_breakpoint bp_info;
 
-                if (!access_ok(VERIFY_READ, data,
+                if (!access_ok(VERIFY_READ, datavp,
                                sizeof(struct ppc_hw_breakpoint)))
                         return -EFAULT;
-                ret = __copy_from_user(&bp_info,
-                                       (struct ppc_hw_breakpoint __user *)data,
+                ret = __copy_from_user(&bp_info, datavp,
                                        sizeof(struct ppc_hw_breakpoint)) ?
                       -EFAULT : 0;
                 if (!ret)
@@ -1560,11 +1564,9 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 if (addr > 0)
                         break;
 #ifdef CONFIG_PPC_ADV_DEBUG_REGS
-                ret = put_user(child->thread.dac1,
-                               (unsigned long __user *)data);
+                ret = put_user(child->thread.dac1, datalp);
 #else
-                ret = put_user(child->thread.dabr,
-                               (unsigned long __user *)data);
+                ret = put_user(child->thread.dabr, datalp);
 #endif
                 break;
         }
@@ -1580,7 +1582,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 return copy_regset_to_user(child, &user_ppc_native_view,
                                            REGSET_GPR,
                                            0, sizeof(struct pt_regs),
-                                           (void __user *) data);
+                                           datavp);
 
 #ifdef CONFIG_PPC64
         case PTRACE_SETREGS64:
@@ -1589,19 +1591,19 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 return copy_regset_from_user(child, &user_ppc_native_view,
                                              REGSET_GPR,
                                              0, sizeof(struct pt_regs),
-                                             (const void __user *) data);
+                                             datavp);
 
         case PTRACE_GETFPREGS: /* Get the child FPU state (FPR0...31 + FPSCR) */
                 return copy_regset_to_user(child, &user_ppc_native_view,
                                            REGSET_FPR,
                                            0, sizeof(elf_fpregset_t),
-                                           (void __user *) data);
+                                           datavp);
 
         case PTRACE_SETFPREGS: /* Set the child FPU state (FPR0...31 + FPSCR) */
                 return copy_regset_from_user(child, &user_ppc_native_view,
                                              REGSET_FPR,
                                              0, sizeof(elf_fpregset_t),
-                                             (const void __user *) data);
+                                             datavp);
 
 #ifdef CONFIG_ALTIVEC
         case PTRACE_GETVRREGS:
@@ -1609,40 +1611,40 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                                            REGSET_VMX,
                                            0, (33 * sizeof(vector128) +
                                                sizeof(u32)),
-                                           (void __user *) data);
+                                           datavp);
 
         case PTRACE_SETVRREGS:
                 return copy_regset_from_user(child, &user_ppc_native_view,
                                              REGSET_VMX,
                                              0, (33 * sizeof(vector128) +
                                                  sizeof(u32)),
-                                             (const void __user *) data);
+                                             datavp);
 #endif
 #ifdef CONFIG_VSX
         case PTRACE_GETVSRREGS:
                 return copy_regset_to_user(child, &user_ppc_native_view,
                                            REGSET_VSX,
                                            0, 32 * sizeof(double),
-                                           (void __user *) data);
+                                           datavp);
 
         case PTRACE_SETVSRREGS:
                 return copy_regset_from_user(child, &user_ppc_native_view,
                                              REGSET_VSX,
                                              0, 32 * sizeof(double),
-                                             (const void __user *) data);
+                                             datavp);
 #endif
 #ifdef CONFIG_SPE
         case PTRACE_GETEVRREGS:
                 /* Get the child spe register state. */
                 return copy_regset_to_user(child, &user_ppc_native_view,
                                            REGSET_SPE, 0, 35 * sizeof(u32),
-                                           (void __user *) data);
+                                           datavp);
 
         case PTRACE_SETEVRREGS:
                 /* Set the child spe register state. */
                 return copy_regset_from_user(child, &user_ppc_native_view,
                                              REGSET_SPE, 0, 35 * sizeof(u32),
-                                             (const void __user *) data);
+                                             datavp);
 #endif
 
         /* Old reverse args ptrace callss */
diff --git a/arch/powerpc/mm/highmem.c b/arch/powerpc/mm/highmem.c
index b0848b462bbc..e7450bdbe83a 100644
--- a/arch/powerpc/mm/highmem.c
+++ b/arch/powerpc/mm/highmem.c
@@ -62,7 +62,7 @@ void __kunmap_atomic(void *kvaddr)
                 return;
         }
 
-        type = kmap_atomic_idx_pop();
+        type = kmap_atomic_idx();
 
 #ifdef CONFIG_DEBUG_HIGHMEM
         {
@@ -79,6 +79,8 @@ void __kunmap_atomic(void *kvaddr)
                 local_flush_tlb_page(NULL, vaddr);
         }
 #endif
+
+        kmap_atomic_idx_pop();
         pagefault_enable();
 }
 EXPORT_SYMBOL(__kunmap_atomic);
diff --git a/arch/powerpc/sysdev/fsl_rio.c b/arch/powerpc/sysdev/fsl_rio.c
index 412763672d23..9725369d432a 100644
--- a/arch/powerpc/sysdev/fsl_rio.c
+++ b/arch/powerpc/sysdev/fsl_rio.c
@@ -50,6 +50,7 @@
 #define RIO_ATMU_REGS_OFFSET    0x10c00
 #define RIO_P_MSG_REGS_OFFSET   0x11000
 #define RIO_S_MSG_REGS_OFFSET   0x13000
+#define RIO_GCCSR               0x13c
 #define RIO_ESCSR               0x158
 #define RIO_CCSR                0x15c
 #define RIO_LTLEDCSR            0x0608
@@ -87,6 +88,9 @@
 #define RIO_IPWSR_PWD           0x00000008
 #define RIO_IPWSR_PWB           0x00000004
 
+#define RIO_EPWISR_PINT         0x80000000
+#define RIO_EPWISR_PW           0x00000001
+
 #define RIO_MSG_DESC_SIZE       32
 #define RIO_MSG_BUFFER_SIZE     4096
 #define RIO_MIN_TX_RING_SIZE    2
@@ -1082,18 +1086,12 @@ fsl_rio_port_write_handler(int irq, void *dev_instance)
         struct rio_priv *priv = port->priv;
         u32 epwisr, tmp;
 
-        ipwmr = in_be32(&priv->msg_regs->pwmr);
-        ipwsr = in_be32(&priv->msg_regs->pwsr);
-
         epwisr = in_be32(priv->regs_win + RIO_EPWISR);
-        if (epwisr & 0x80000000) {
-                tmp = in_be32(priv->regs_win + RIO_LTLEDCSR);
-                pr_info("RIO_LTLEDCSR = 0x%x\n", tmp);
-                out_be32(priv->regs_win + RIO_LTLEDCSR, 0);
-        }
+        if (!(epwisr & RIO_EPWISR_PW))
+                goto pw_done;
 
-        if (!(epwisr & 0x00000001))
-                return IRQ_HANDLED;
+        ipwmr = in_be32(&priv->msg_regs->pwmr);
+        ipwsr = in_be32(&priv->msg_regs->pwsr);
 
 #ifdef DEBUG_PW
         pr_debug("PW Int->IPWMR: 0x%08x IPWSR: 0x%08x (", ipwmr, ipwsr);
@@ -1109,20 +1107,6 @@ fsl_rio_port_write_handler(int irq, void *dev_instance)
                 pr_debug(" PWB");
         pr_debug(" )\n");
 #endif
-        out_be32(&priv->msg_regs->pwsr,
-                 ipwsr & (RIO_IPWSR_TE | RIO_IPWSR_QFI | RIO_IPWSR_PWD));
-
-        if ((ipwmr & RIO_IPWMR_EIE) && (ipwsr & RIO_IPWSR_TE)) {
-                priv->port_write_msg.err_count++;
-                pr_info("RIO: Port-Write Transaction Err (%d)\n",
-                         priv->port_write_msg.err_count);
-        }
-        if (ipwsr & RIO_IPWSR_PWD) {
-                priv->port_write_msg.discard_count++;
-                pr_info("RIO: Port Discarded Port-Write Msg(s) (%d)\n",
-                         priv->port_write_msg.discard_count);
-        }
-
         /* Schedule deferred processing if PW was received */
         if (ipwsr & RIO_IPWSR_QFI) {
                 /* Save PW message (if there is room in FIFO),
@@ -1134,16 +1118,43 @@ fsl_rio_port_write_handler(int irq, void *dev_instance)
                                  RIO_PW_MSG_SIZE);
                 } else {
                         priv->port_write_msg.discard_count++;
-                        pr_info("RIO: ISR Discarded Port-Write Msg(s) (%d)\n",
+                        pr_debug("RIO: ISR Discarded Port-Write Msg(s) (%d)\n",
                                  priv->port_write_msg.discard_count);
                 }
+                /* Clear interrupt and issue Clear Queue command. This allows
+                 * another port-write to be received.
+                 */
+                out_be32(&priv->msg_regs->pwsr, RIO_IPWSR_QFI);
+                out_be32(&priv->msg_regs->pwmr, ipwmr | RIO_IPWMR_CQ);
+
                 schedule_work(&priv->pw_work);
         }
 
-        /* Issue Clear Queue command. This allows another
-         * port-write to be received.
-         */
-        out_be32(&priv->msg_regs->pwmr, ipwmr | RIO_IPWMR_CQ);
+        if ((ipwmr & RIO_IPWMR_EIE) && (ipwsr & RIO_IPWSR_TE)) {
+                priv->port_write_msg.err_count++;
+                pr_debug("RIO: Port-Write Transaction Err (%d)\n",
+                         priv->port_write_msg.err_count);
+                /* Clear Transaction Error: port-write controller should be
+                 * disabled when clearing this error
+                 */
+                out_be32(&priv->msg_regs->pwmr, ipwmr & ~RIO_IPWMR_PWE);
+                out_be32(&priv->msg_regs->pwsr, RIO_IPWSR_TE);
+                out_be32(&priv->msg_regs->pwmr, ipwmr);
+        }
+
+        if (ipwsr & RIO_IPWSR_PWD) {
+                priv->port_write_msg.discard_count++;
+                pr_debug("RIO: Port Discarded Port-Write Msg(s) (%d)\n",
+                         priv->port_write_msg.discard_count);
+                out_be32(&priv->msg_regs->pwsr, RIO_IPWSR_PWD);
+        }
+
+pw_done:
+        if (epwisr & RIO_EPWISR_PINT) {
+                tmp = in_be32(priv->regs_win + RIO_LTLEDCSR);
+                pr_debug("RIO_LTLEDCSR = 0x%x\n", tmp);
+                out_be32(priv->regs_win + RIO_LTLEDCSR, 0);
+        }
 
         return IRQ_HANDLED;
 }
@@ -1461,6 +1472,7 @@ int fsl_rio_setup(struct platform_device *dev)
         port->host_deviceid = fsl_rio_get_hdid(port->id);
 
         port->priv = priv;
+        port->phys_efptr = 0x100;
         rio_register_mport(port);
 
         priv->regs_win = ioremap(regs.start, regs.end - regs.start + 1);
@@ -1508,6 +1520,12 @@ int fsl_rio_setup(struct platform_device *dev)
         dev_info(&dev->dev, "RapidIO Common Transport System size: %d\n",
                         port->sys_size ? 65536 : 256);
 
+        if (port->host_deviceid >= 0)
+                out_be32(priv->regs_win + RIO_GCCSR, RIO_PORT_GEN_HOST |
+                        RIO_PORT_GEN_MASTER | RIO_PORT_GEN_DISCOVERED);
+        else
+                out_be32(priv->regs_win + RIO_GCCSR, 0x00000000);
+
         priv->atmu_regs = (struct rio_atmu_regs *)(priv->regs_win
                                         + RIO_ATMU_REGS_OFFSET);
         priv->maint_atmu_regs = priv->atmu_regs + 1;
diff --git a/arch/s390/include/asm/cputime.h b/arch/s390/include/asm/cputime.h
index 8b1a52a137c5..40e2ab0fa3f0 100644
--- a/arch/s390/include/asm/cputime.h
+++ b/arch/s390/include/asm/cputime.h
@@ -73,18 +73,18 @@ cputime64_to_jiffies64(cputime64_t cputime)
 }
 
 /*
- * Convert cputime to milliseconds and back.
+ * Convert cputime to microseconds and back.
  */
 static inline unsigned int
-cputime_to_msecs(const cputime_t cputime)
+cputime_to_usecs(const cputime_t cputime)
 {
-        return cputime_div(cputime, 4096000);
+        return cputime_div(cputime, 4096);
 }
 
 static inline cputime_t
-msecs_to_cputime(const unsigned int m)
+usecs_to_cputime(const unsigned int m)
 {
-        return (cputime_t) m * 4096000;
+        return (cputime_t) m * 4096;
 }
 
 /*
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index 83339d33c4b1..019bb714db49 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -343,7 +343,8 @@ poke_user(struct task_struct *child, addr_t addr, addr_t data)
         return __poke_user(child, addr, data);
 }
 
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request,
+                 unsigned long addr, unsigned long data)
 {
         ptrace_area parea; 
         int copied, ret;
diff --git a/arch/score/kernel/ptrace.c b/arch/score/kernel/ptrace.c
index 174c6422b096..55836188b217 100644
--- a/arch/score/kernel/ptrace.c
+++ b/arch/score/kernel/ptrace.c
@@ -325,7 +325,8 @@ void ptrace_disable(struct task_struct *child)
 }
 
 long
-arch_ptrace(struct task_struct *child, long request, long addr, long data)
+arch_ptrace(struct task_struct *child, long request,
+            unsigned long addr, unsigned long data)
 {
         int ret;
         unsigned long __user *datap = (void __user *)data;
@@ -335,14 +336,14 @@ arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 ret = copy_regset_to_user(child, &user_score_native_view,
                                                 REGSET_GENERAL,
                                                 0, sizeof(struct pt_regs),
-                                                (void __user *)datap);
+                                                datap);
                 break;
 
         case PTRACE_SETREGS:
                 ret = copy_regset_from_user(child, &user_score_native_view,
                                                 REGSET_GENERAL,
                                                 0, sizeof(struct pt_regs),
-                                                (const void __user *)datap);
+                                                datap);
                 break;
 
         default:
diff --git a/arch/sh/kernel/ptrace_32.c b/arch/sh/kernel/ptrace_32.c
index 2cd42b58cb20..90a15d29feeb 100644
--- a/arch/sh/kernel/ptrace_32.c
+++ b/arch/sh/kernel/ptrace_32.c
@@ -365,9 +365,9 @@ const struct user_regset_view *task_user_regset_view(struct task_struct *task)
         return &user_sh_native_view;
 }
 
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request,
+                 unsigned long addr, unsigned long data)
 {
-        struct user * dummy = NULL;
         unsigned long __user *datap = (unsigned long __user *)data;
         int ret;
 
@@ -383,17 +383,20 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 
                 if (addr < sizeof(struct pt_regs))
                         tmp = get_stack_long(child, addr);
-                else if (addr >= (long) &dummy->fpu &&
-                         addr < (long) &dummy->u_fpvalid) {
+                else if (addr >= offsetof(struct user, fpu) &&
+                         addr < offsetof(struct user, u_fpvalid)) {
                         if (!tsk_used_math(child)) {
-                                if (addr == (long)&dummy->fpu.fpscr)
+                                if (addr == offsetof(struct user, fpu.fpscr))
                                         tmp = FPSCR_INIT;
                                 else
                                         tmp = 0;
-                        } else
-                                tmp = ((long *)child->thread.xstate)
-                                        [(addr - (long)&dummy->fpu) >> 2];
-                } else if (addr == (long) &dummy->u_fpvalid)
+                        } else {
+                                unsigned long index;
+                                index = addr - offsetof(struct user, fpu);
+                                tmp = ((unsigned long *)child->thread.xstate)
+                                        [index >> 2];
+                        }
+                } else if (addr == offsetof(struct user, u_fpvalid))
                         tmp = !!tsk_used_math(child);
                 else if (addr == PT_TEXT_ADDR)
                         tmp = child->mm->start_code;
@@ -417,13 +420,15 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 
                 if (addr < sizeof(struct pt_regs))
                         ret = put_stack_long(child, addr, data);
-                else if (addr >= (long) &dummy->fpu &&
-                         addr < (long) &dummy->u_fpvalid) {
+                else if (addr >= offsetof(struct user, fpu) &&
+                         addr < offsetof(struct user, u_fpvalid)) {
+                        unsigned long index;
+                        index = addr - offsetof(struct user, fpu);
                         set_stopped_child_used_math(child);
-                        ((long *)child->thread.xstate)
-                                [(addr - (long)&dummy->fpu) >> 2] = data;
+                        ((unsigned long *)child->thread.xstate)
+                                [index >> 2] = data;
                         ret = 0;
-                } else if (addr == (long) &dummy->u_fpvalid) {
+                } else if (addr == offsetof(struct user, u_fpvalid)) {
                         conditional_stopped_child_used_math(data, child);
                         ret = 0;
                 }
@@ -433,35 +438,35 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 return copy_regset_to_user(child, &user_sh_native_view,
                                            REGSET_GENERAL,
                                            0, sizeof(struct pt_regs),
-                                           (void __user *)data);
+                                           datap);
         case PTRACE_SETREGS:
                 return copy_regset_from_user(child, &user_sh_native_view,
                                              REGSET_GENERAL,
                                              0, sizeof(struct pt_regs),
-                                             (const void __user *)data);
+                                             datap);
 #ifdef CONFIG_SH_FPU
         case PTRACE_GETFPREGS:
                 return copy_regset_to_user(child, &user_sh_native_view,
                                            REGSET_FPU,
                                            0, sizeof(struct user_fpu_struct),
-                                           (void __user *)data);
+                                           datap);
         case PTRACE_SETFPREGS:
                 return copy_regset_from_user(child, &user_sh_native_view,
                                              REGSET_FPU,
                                              0, sizeof(struct user_fpu_struct),
-                                             (const void __user *)data);
+                                             datap);
 #endif
 #ifdef CONFIG_SH_DSP
         case PTRACE_GETDSPREGS:
                 return copy_regset_to_user(child, &user_sh_native_view,
                                            REGSET_DSP,
                                            0, sizeof(struct pt_dspregs),
-                                           (void __user *)data);
+                                           datap);
         case PTRACE_SETDSPREGS:
                 return copy_regset_from_user(child, &user_sh_native_view,
                                              REGSET_DSP,
                                              0, sizeof(struct pt_dspregs),
-                                             (const void __user *)data);
+                                             datap);
 #endif
         default:
                 ret = ptrace_request(child, request, addr, data);
diff --git a/arch/sh/kernel/ptrace_64.c b/arch/sh/kernel/ptrace_64.c
index e0fb065914aa..4436eacddb15 100644
--- a/arch/sh/kernel/ptrace_64.c
+++ b/arch/sh/kernel/ptrace_64.c
@@ -383,9 +383,11 @@ const struct user_regset_view *task_user_regset_view(struct task_struct *task)
         return &user_sh64_native_view;
 }
 
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request,
+                 unsigned long addr, unsigned long data)
 {
         int ret;
+        unsigned long __user *datap = (unsigned long __user *) data;
 
         switch (request) {
         /* read the word at location addr in the USER area. */
@@ -400,13 +402,15 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                         tmp = get_stack_long(child, addr);
                 else if ((addr >= offsetof(struct user, fpu)) &&
                          (addr <  offsetof(struct user, u_fpvalid))) {
-                        tmp = get_fpu_long(child, addr - offsetof(struct user, fpu));
+                        unsigned long index;
+                        index = addr - offsetof(struct user, fpu);
+                        tmp = get_fpu_long(child, index);
                 } else if (addr == offsetof(struct user, u_fpvalid)) {
                         tmp = !!tsk_used_math(child);
                 } else {
                         break;
                 }
-                ret = put_user(tmp, (unsigned long *)data);
+                ret = put_user(tmp, datap);
                 break;
         }
 
@@ -437,7 +441,9 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 }
                 else if ((addr >= offsetof(struct user, fpu)) &&
                          (addr <  offsetof(struct user, u_fpvalid))) {
-                        ret = put_fpu_long(child, addr - offsetof(struct user, fpu), data);
+                        unsigned long index;
+                        index = addr - offsetof(struct user, fpu);
+                        ret = put_fpu_long(child, index, data);
                 }
                 break;
 
@@ -445,23 +451,23 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 return copy_regset_to_user(child, &user_sh64_native_view,
                                            REGSET_GENERAL,
                                            0, sizeof(struct pt_regs),
-                                           (void __user *)data);
+                                           datap);
         case PTRACE_SETREGS:
                 return copy_regset_from_user(child, &user_sh64_native_view,
                                              REGSET_GENERAL,
                                              0, sizeof(struct pt_regs),
-                                             (const void __user *)data);
+                                             datap);
 #ifdef CONFIG_SH_FPU
         case PTRACE_GETFPREGS:
                 return copy_regset_to_user(child, &user_sh64_native_view,
                                            REGSET_FPU,
                                            0, sizeof(struct user_fpu_struct),
-                                           (void __user *)data);
+                                           datap);
         case PTRACE_SETFPREGS:
                 return copy_regset_from_user(child, &user_sh64_native_view,
                                              REGSET_FPU,
                                              0, sizeof(struct user_fpu_struct),
-                                             (const void __user *)data);
+                                             datap);
 #endif
         default:
                 ret = ptrace_request(child, request, addr, data);
@@ -471,7 +477,8 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
         return ret;
 }
 
-asmlinkage int sh64_ptrace(long request, long pid, long addr, long data)
+asmlinkage int sh64_ptrace(long request, long pid,
+                           unsigned long addr, unsigned long data)
 {
 #define WPC_DBRMODE 0x0d104008
         static unsigned long first_call;
diff --git a/arch/sparc/include/asm/io_32.h b/arch/sparc/include/asm/io_32.h
index 2889574608db..c2ced21c9dc1 100644
--- a/arch/sparc/include/asm/io_32.h
+++ b/arch/sparc/include/asm/io_32.h
@@ -208,6 +208,21 @@ _memset_io(volatile void __iomem *dst, int c, __kernel_size_t n)
 #define memset_io(d,c,sz)       _memset_io(d,c,sz)
 
 static inline void
+_sbus_memcpy_fromio(void *dst, const volatile void __iomem *src,
+                    __kernel_size_t n)
+{
+        char *d = dst;
+
+        while (n--) {
+                char tmp = sbus_readb(src);
+                *d++ = tmp;
+                src++;
+        }
+}
+
+#define sbus_memcpy_fromio(d, s, sz)    _sbus_memcpy_fromio(d, s, sz)
+
+static inline void
 _memcpy_fromio(void *dst, const volatile void __iomem *src, __kernel_size_t n)
 {
         char *d = dst;
@@ -222,6 +237,22 @@ _memcpy_fromio(void *dst, const volatile void __iomem *src, __kernel_size_t n)
 #define memcpy_fromio(d,s,sz)   _memcpy_fromio(d,s,sz)
 
 static inline void
+_sbus_memcpy_toio(volatile void __iomem *dst, const void *src,
+                  __kernel_size_t n)
+{
+        const char *s = src;
+        volatile void __iomem *d = dst;
+
+        while (n--) {
+                char tmp = *s++;
+                sbus_writeb(tmp, d);
+                d++;
+        }
+}
+
+#define sbus_memcpy_toio(d, s, sz)      _sbus_memcpy_toio(d, s, sz)
+
+static inline void
 _memcpy_toio(volatile void __iomem *dst, const void *src, __kernel_size_t n)
 {
         const char *s = src;
diff --git a/arch/sparc/include/asm/io_64.h b/arch/sparc/include/asm/io_64.h
index 9517d063c79c..9c8965415f0a 100644
--- a/arch/sparc/include/asm/io_64.h
+++ b/arch/sparc/include/asm/io_64.h
@@ -419,6 +419,21 @@ _memset_io(volatile void __iomem *dst, int c, __kernel_size_t n)
 #define memset_io(d,c,sz)       _memset_io(d,c,sz)
 
 static inline void
+_sbus_memcpy_fromio(void *dst, const volatile void __iomem *src,
+                    __kernel_size_t n)
+{
+        char *d = dst;
+
+        while (n--) {
+                char tmp = sbus_readb(src);
+                *d++ = tmp;
+                src++;
+        }
+}
+
+#define sbus_memcpy_fromio(d, s, sz)    _sbus_memcpy_fromio(d, s, sz)
+
+static inline void
 _memcpy_fromio(void *dst, const volatile void __iomem *src, __kernel_size_t n)
 {
         char *d = dst;
@@ -433,6 +448,22 @@ _memcpy_fromio(void *dst, const volatile void __iomem *src, __kernel_size_t n)
 #define memcpy_fromio(d,s,sz)   _memcpy_fromio(d,s,sz)
 
 static inline void
+_sbus_memcpy_toio(volatile void __iomem *dst, const void *src,
+                  __kernel_size_t n)
+{
+        const char *s = src;
+        volatile void __iomem *d = dst;
+
+        while (n--) {
+                char tmp = *s++;
+                sbus_writeb(tmp, d);
+                d++;
+        }
+}
+
+#define sbus_memcpy_toio(d, s, sz)      _sbus_memcpy_toio(d, s, sz)
+
+static inline void
 _memcpy_toio(volatile void __iomem *dst, const void *src, __kernel_size_t n)
 {
         const char *s = src;
diff --git a/arch/sparc/include/asm/pci_64.h b/arch/sparc/include/asm/pci_64.h
index 5312782f0b5e..948b686ec089 100644
--- a/arch/sparc/include/asm/pci_64.h
+++ b/arch/sparc/include/asm/pci_64.h
@@ -38,7 +38,7 @@ static inline void pcibios_penalize_isa_irq(int irq, int active)
  * types on sparc64.  However, it requires that the device
  * can drive enough of the 64 bits.
  */
-#define PCI64_REQUIRED_MASK     (~(dma64_addr_t)0)
+#define PCI64_REQUIRED_MASK     (~(u64)0)
 #define PCI64_ADDR_BASE         0xfffc000000000000UL
 
 #ifdef CONFIG_PCI
diff --git a/arch/sparc/kernel/ptrace_32.c b/arch/sparc/kernel/ptrace_32.c
index e608f397e11f..27b9e93d0121 100644
--- a/arch/sparc/kernel/ptrace_32.c
+++ b/arch/sparc/kernel/ptrace_32.c
@@ -323,18 +323,35 @@ const struct user_regset_view *task_user_regset_view(struct task_struct *task)
         return &user_sparc32_view;
 }
 
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+struct fps {
+        unsigned long regs[32];
+        unsigned long fsr;
+        unsigned long flags;
+        unsigned long extra;
+        unsigned long fpqd;
+        struct fq {
+                unsigned long *insnaddr;
+                unsigned long insn;
+        } fpq[16];
+};
+
+long arch_ptrace(struct task_struct *child, long request,
+                 unsigned long addr, unsigned long data)
 {
         unsigned long addr2 = current->thread.kregs->u_regs[UREG_I4];
+        void __user *addr2p;
         const struct user_regset_view *view;
+        struct pt_regs __user *pregs;
+        struct fps __user *fps;
         int ret;
 
         view = task_user_regset_view(current);
+        addr2p = (void __user *) addr2;
+        pregs = (struct pt_regs __user *) addr;
+        fps = (struct fps __user *) addr;
 
         switch(request) {
         case PTRACE_GETREGS: {
-                struct pt_regs __user *pregs = (struct pt_regs __user *) addr;
-
                 ret = copy_regset_to_user(child, view, REGSET_GENERAL,
                                           32 * sizeof(u32),
                                           4 * sizeof(u32),
@@ -348,8 +365,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
         }
 
         case PTRACE_SETREGS: {
-                struct pt_regs __user *pregs = (struct pt_regs __user *) addr;
-
                 ret = copy_regset_from_user(child, view, REGSET_GENERAL,
                                             32 * sizeof(u32),
                                             4 * sizeof(u32),
@@ -363,19 +378,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
         }
 
         case PTRACE_GETFPREGS: {
-                struct fps {
-                        unsigned long regs[32];
-                        unsigned long fsr;
-                        unsigned long flags;
-                        unsigned long extra;
-                        unsigned long fpqd;
-                        struct fq {
-                                unsigned long *insnaddr;
-                                unsigned long insn;
-                        } fpq[16];
-                };
-                struct fps __user *fps = (struct fps __user *) addr;
-
                 ret = copy_regset_to_user(child, view, REGSET_FP,
                                           0 * sizeof(u32),
                                           32 * sizeof(u32),
@@ -397,19 +399,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
         }
 
         case PTRACE_SETFPREGS: {
-                struct fps {
-                        unsigned long regs[32];
-                        unsigned long fsr;
-                        unsigned long flags;
-                        unsigned long extra;
-                        unsigned long fpqd;
-                        struct fq {
-                                unsigned long *insnaddr;
-                                unsigned long insn;
-                        } fpq[16];
-                };
-                struct fps __user *fps = (struct fps __user *) addr;
-
                 ret = copy_regset_from_user(child, view, REGSET_FP,
                                             0 * sizeof(u32),
                                             32 * sizeof(u32),
@@ -424,8 +413,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 
         case PTRACE_READTEXT:
         case PTRACE_READDATA:
-                ret = ptrace_readdata(child, addr,
-                                      (void __user *) addr2, data);
+                ret = ptrace_readdata(child, addr, addr2p, data);
 
                 if (ret == data)
                         ret = 0;
@@ -435,8 +423,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 
         case PTRACE_WRITETEXT:
         case PTRACE_WRITEDATA:
-                ret = ptrace_writedata(child, (void __user *) addr2,
-                                       addr, data);
+                ret = ptrace_writedata(child, addr2p, addr, data);
 
                 if (ret == data)
                         ret = 0;
diff --git a/arch/sparc/kernel/ptrace_64.c b/arch/sparc/kernel/ptrace_64.c
index aa90da08bf61..9ccc812bc09e 100644
--- a/arch/sparc/kernel/ptrace_64.c
+++ b/arch/sparc/kernel/ptrace_64.c
@@ -969,16 +969,19 @@ struct fps {
         unsigned long fsr;
 };
 
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request,
+                 unsigned long addr, unsigned long data)
 {
         const struct user_regset_view *view = task_user_regset_view(current);
         unsigned long addr2 = task_pt_regs(current)->u_regs[UREG_I4];
         struct pt_regs __user *pregs;
         struct fps __user *fps;
+        void __user *addr2p;
         int ret;
 
-        pregs = (struct pt_regs __user *) (unsigned long) addr;
-        fps = (struct fps __user *) (unsigned long) addr;
+        pregs = (struct pt_regs __user *) addr;
+        fps = (struct fps __user *) addr;
+        addr2p = (void __user *) addr2;
 
         switch (request) {
         case PTRACE_PEEKUSR:
@@ -1029,8 +1032,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 
         case PTRACE_READTEXT:
         case PTRACE_READDATA:
-                ret = ptrace_readdata(child, addr,
-                                      (char __user *)addr2, data);
+                ret = ptrace_readdata(child, addr, addr2p, data);
                 if (ret == data)
                         ret = 0;
                 else if (ret >= 0)
@@ -1039,8 +1041,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 
         case PTRACE_WRITETEXT:
         case PTRACE_WRITEDATA:
-                ret = ptrace_writedata(child, (char __user *) addr2,
-                                       addr, data);
+                ret = ptrace_writedata(child, addr2p, addr, data);
                 if (ret == data)
                         ret = 0;
                 else if (ret >= 0)
diff --git a/arch/sparc/mm/highmem.c b/arch/sparc/mm/highmem.c
index 5e50c09b7dce..4730eac0747b 100644
--- a/arch/sparc/mm/highmem.c
+++ b/arch/sparc/mm/highmem.c
@@ -75,7 +75,7 @@ void __kunmap_atomic(void *kvaddr)
                 return;
         }
 
-        type = kmap_atomic_idx_pop();
+        type = kmap_atomic_idx();
 
 #ifdef CONFIG_DEBUG_HIGHMEM
         {
@@ -104,6 +104,8 @@ void __kunmap_atomic(void *kvaddr)
 #endif
         }
 #endif
+
+        kmap_atomic_idx_pop();
         pagefault_enable();
 }
 EXPORT_SYMBOL(__kunmap_atomic);
diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig
index 89cfee07efa9..7e8c2844e093 100644
--- a/arch/tile/Kconfig
+++ b/arch/tile/Kconfig
@@ -58,6 +58,9 @@ config ARCH_SUPPORTS_OPTIMIZED_INLINING
 config ARCH_PHYS_ADDR_T_64BIT
         def_bool y
 
+config ARCH_DMA_ADDR_T_64BIT
+        def_bool y
+
 config LOCKDEP_SUPPORT
         def_bool y
 
diff --git a/arch/tile/kernel/ptrace.c b/arch/tile/kernel/ptrace.c
index 5b20c2874d51..9cd29884c09f 100644
--- a/arch/tile/kernel/ptrace.c
+++ b/arch/tile/kernel/ptrace.c
@@ -45,7 +45,8 @@ void ptrace_disable(struct task_struct *child)
         clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
 }
 
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request,
+                 unsigned long addr, unsigned long data)
 {
         unsigned long __user *datap = (long __user __force *)data;
         unsigned long tmp;
@@ -57,7 +58,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
         switch (request) {
 
         case PTRACE_PEEKUSR:  /* Read register from pt_regs. */
-                if (addr < 0 || addr >= PTREGS_SIZE)
+                if (addr >= PTREGS_SIZE)
                         break;
                 childreg = (char *)task_pt_regs(child) + addr;
 #ifdef CONFIG_COMPAT
@@ -76,7 +77,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 break;
 
         case PTRACE_POKEUSR:  /* Write register in pt_regs. */
-                if (addr < 0 || addr >= PTREGS_SIZE)
+                if (addr >= PTREGS_SIZE)
                         break;
                 childreg = (char *)task_pt_regs(child) + addr;
 #ifdef CONFIG_COMPAT
@@ -98,7 +99,8 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 if (!access_ok(VERIFY_WRITE, datap, PTREGS_SIZE))
                         break;
                 childregs = (long *)task_pt_regs(child);
-                for (i = 0; i < sizeof(struct pt_regs)/sizeof(long); ++i) {
+                for (i = 0; i < sizeof(struct pt_regs)/sizeof(unsigned long);
+                                ++i) {
                         ret = __put_user(childregs[i], &datap[i]);
                         if (ret != 0)
                                 break;
@@ -109,7 +111,8 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 if (!access_ok(VERIFY_READ, datap, PTREGS_SIZE))
                         break;
                 childregs = (long *)task_pt_regs(child);
-                for (i = 0; i < sizeof(struct pt_regs)/sizeof(long); ++i) {
+                for (i = 0; i < sizeof(struct pt_regs)/sizeof(unsigned long);
+                                ++i) {
                         ret = __get_user(childregs[i], &datap[i]);
                         if (ret != 0)
                                 break;
diff --git a/arch/tile/kernel/setup.c b/arch/tile/kernel/setup.c
index f3a50e74f9a4..ae51cad12da0 100644
--- a/arch/tile/kernel/setup.c
+++ b/arch/tile/kernel/setup.c
@@ -30,8 +30,6 @@
 #include <linux/timex.h>
 #include <asm/setup.h>
 #include <asm/sections.h>
-#include <asm/sections.h>
-#include <asm/cacheflush.h>
 #include <asm/cacheflush.h>
 #include <asm/pgalloc.h>
 #include <asm/mmu_context.h>
diff --git a/arch/tile/mm/highmem.c b/arch/tile/mm/highmem.c
index 8ef6595e162c..abb57331cf6e 100644
--- a/arch/tile/mm/highmem.c
+++ b/arch/tile/mm/highmem.c
@@ -241,7 +241,7 @@ void __kunmap_atomic(void *kvaddr)
                 pte_t pteval = *pte;
                 int idx, type;
 
-                type = kmap_atomic_idx_pop();
+                type = kmap_atomic_idx();
                 idx = type + KM_TYPE_NR*smp_processor_id();
 
                 /*
@@ -252,6 +252,7 @@ void __kunmap_atomic(void *kvaddr)
                 BUG_ON(!pte_present(pteval) && !pte_migrating(pteval));
                 kmap_atomic_unregister(pte_page(pteval), vaddr);
                 kpte_clear_flush(pte, vaddr);
+                kmap_atomic_idx_pop();
         } else {
                 /* Must be a lowmem page */
                 BUG_ON(vaddr < PAGE_OFFSET);
diff --git a/arch/um/kernel/ptrace.c b/arch/um/kernel/ptrace.c
index e0510496596c..a5e33f29bbeb 100644
--- a/arch/um/kernel/ptrace.c
+++ b/arch/um/kernel/ptrace.c
@@ -42,10 +42,12 @@ void ptrace_disable(struct task_struct *child)
 extern int peek_user(struct task_struct * child, long addr, long data);
 extern int poke_user(struct task_struct * child, long addr, long data);
 
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request,
+                 unsigned long addr, unsigned long data)
 {
         int i, ret;
-        unsigned long __user *p = (void __user *)(unsigned long)data;
+        unsigned long __user *p = (void __user *)data;
+        void __user *vp = p;
 
         switch (request) {
         /* read word at location addr. */
@@ -107,24 +109,20 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 #endif
 #ifdef PTRACE_GETFPREGS
         case PTRACE_GETFPREGS: /* Get the child FPU state. */
-                ret = get_fpregs((struct user_i387_struct __user *) data,
-                                 child);
+                ret = get_fpregs(vp, child);
                 break;
 #endif
 #ifdef PTRACE_SETFPREGS
         case PTRACE_SETFPREGS: /* Set the child FPU state. */
-                ret = set_fpregs((struct user_i387_struct __user *) data,
-                                 child);
+                ret = set_fpregs(vp, child);
                 break;
 #endif
         case PTRACE_GET_THREAD_AREA:
-                ret = ptrace_get_thread_area(child, addr,
-                                             (struct user_desc __user *) data);
+                ret = ptrace_get_thread_area(child, addr, vp);
                 break;
 
         case PTRACE_SET_THREAD_AREA:
-                ret = ptrace_set_thread_area(child, addr,
-                                             (struct user_desc __user *) data);
+                ret = ptrace_set_thread_area(child, addr, datavp);
                 break;
 
         case PTRACE_FAULTINFO: {
@@ -134,7 +132,8 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                  * On i386, ptrace_faultinfo is smaller!
                  */
                 ret = copy_to_user(p, &child->thread.arch.faultinfo,
-                                   sizeof(struct ptrace_faultinfo));
+                                   sizeof(struct ptrace_faultinfo)) ?
+                        -EIO : 0;
                 break;
         }
 
@@ -158,7 +157,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 #ifdef PTRACE_ARCH_PRCTL
         case PTRACE_ARCH_PRCTL:
                 /* XXX Calls ptrace on the host - needs some SMP thinking */
-                ret = arch_prctl(child, data, (void *) addr);
+                ret = arch_prctl(child, data, (void __user *) addr);
                 break;
 #endif
         default:
diff --git a/arch/um/sys-i386/ptrace.c b/arch/um/sys-i386/ptrace.c
index c9b176534d65..d23b2d3ea384 100644
--- a/arch/um/sys-i386/ptrace.c
+++ b/arch/um/sys-i386/ptrace.c
@@ -203,8 +203,8 @@ int set_fpxregs(struct user_fxsr_struct __user *buf, struct task_struct *child)
                                      (unsigned long *) &fpregs);
 }
 
-long subarch_ptrace(struct task_struct *child, long request, long addr,
-                    long data)
+long subarch_ptrace(struct task_struct *child, long request,
+                    unsigned long addr, unsigned long data)
 {
         return -EIO;
 }
diff --git a/arch/um/sys-x86_64/ptrace.c b/arch/um/sys-x86_64/ptrace.c
index f3458d7d1c5a..f43613643cdb 100644
--- a/arch/um/sys-x86_64/ptrace.c
+++ b/arch/um/sys-x86_64/ptrace.c
@@ -175,19 +175,18 @@ int set_fpregs(struct user_i387_struct __user *buf, struct task_struct *child)
         return restore_fp_registers(userspace_pid[cpu], fpregs);
 }
 
-long subarch_ptrace(struct task_struct *child, long request, long addr,
-                    long data)
+long subarch_ptrace(struct task_struct *child, long request,
+                    unsigned long addr, unsigned long data)
 {
         int ret = -EIO;
+        void __user *datap = (void __user *) data;
 
         switch (request) {
         case PTRACE_GETFPXREGS: /* Get the child FPU state. */
-                ret = get_fpregs((struct user_i387_struct __user *) data,
-                                 child);
+                ret = get_fpregs(datap, child);
                 break;
         case PTRACE_SETFPXREGS: /* Set the child FPU state. */
-                ret = set_fpregs((struct user_i387_struct __user *) data,
-                                 child);
+                ret = set_fpregs(datap, child);
                 break;
         }
 
diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
index 70c4872cd8aa..45892dc4b72a 100644
--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c
@@ -801,7 +801,8 @@ void ptrace_disable(struct task_struct *child)
 static const struct user_regset_view user_x86_32_view; /* Initialized below. */
 #endif
 
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request,
+                 unsigned long addr, unsigned long data)
 {
         int ret;
         unsigned long __user *datap = (unsigned long __user *)data;
@@ -812,8 +813,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 unsigned long tmp;
 
                 ret = -EIO;
-                if ((addr & (sizeof(data) - 1)) || addr < 0 ||
-                    addr >= sizeof(struct user))
+                if ((addr & (sizeof(data) - 1)) || addr >= sizeof(struct user))
                         break;
 
                 tmp = 0;  /* Default return condition */
@@ -830,8 +830,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 
         case PTRACE_POKEUSR: /* write the word at location addr in the USER area */
                 ret = -EIO;
-                if ((addr & (sizeof(data) - 1)) || addr < 0 ||
-                    addr >= sizeof(struct user))
+                if ((addr & (sizeof(data) - 1)) || addr >= sizeof(struct user))
                         break;
 
                 if (addr < sizeof(struct user_regs_struct))
@@ -888,17 +887,17 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 
 #if defined CONFIG_X86_32 || defined CONFIG_IA32_EMULATION
         case PTRACE_GET_THREAD_AREA:
-                if (addr < 0)
+                if ((int) addr < 0)
                         return -EIO;
                 ret = do_get_thread_area(child, addr,
-                                         (struct user_desc __user *) data);
+                                        (struct user_desc __user *)data);
                 break;
 
         case PTRACE_SET_THREAD_AREA:
-                if (addr < 0)
+                if ((int) addr < 0)
                         return -EIO;
                 ret = do_set_thread_area(child, addr,
-                                         (struct user_desc __user *) data, 0);
+                                        (struct user_desc __user *)data, 0);
                 break;
 #endif
 
diff --git a/arch/x86/mm/highmem_32.c b/arch/x86/mm/highmem_32.c
index d723e369003c..b49962662101 100644
--- a/arch/x86/mm/highmem_32.c
+++ b/arch/x86/mm/highmem_32.c
@@ -74,7 +74,7 @@ void __kunmap_atomic(void *kvaddr)
             vaddr <= __fix_to_virt(FIX_KMAP_BEGIN)) {
                 int idx, type;
 
-                type = kmap_atomic_idx_pop();
+                type = kmap_atomic_idx();
                 idx = type + KM_TYPE_NR * smp_processor_id();
 
 #ifdef CONFIG_DEBUG_HIGHMEM
@@ -87,6 +87,7 @@ void __kunmap_atomic(void *kvaddr)
                  * attributes or becomes a protected page in a hypervisor.
                  */
                 kpte_clear_flush(kmap_pte-idx, vaddr);
+                kmap_atomic_idx_pop();
         }
 #ifdef CONFIG_DEBUG_HIGHMEM
         else {
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 84346200e783..71a59296af80 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -51,7 +51,6 @@
 #include <asm/numa.h>
 #include <asm/cacheflush.h>
 #include <asm/init.h>
-#include <linux/bootmem.h>
 
 static int __init parse_direct_gbpages_off(char *arg)
 {
diff --git a/arch/x86/mm/iomap_32.c b/arch/x86/mm/iomap_32.c
index 75a3d7f24a2c..7b179b499fa3 100644
--- a/arch/x86/mm/iomap_32.c
+++ b/arch/x86/mm/iomap_32.c
@@ -98,7 +98,7 @@ iounmap_atomic(void __iomem *kvaddr)
             vaddr <= __fix_to_virt(FIX_KMAP_BEGIN)) {
                 int idx, type;
 
-                type = kmap_atomic_idx_pop();
+                type = kmap_atomic_idx();
                 idx = type + KM_TYPE_NR * smp_processor_id();
 
 #ifdef CONFIG_DEBUG_HIGHMEM
@@ -111,6 +111,7 @@ iounmap_atomic(void __iomem *kvaddr)
                  * attributes or becomes a protected page in a hypervisor.
                  */
                 kpte_clear_flush(kmap_pte-idx, vaddr);
+                kmap_atomic_idx_pop();
         }
 
         pagefault_enable();
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 580da1aa4a4c..70ddeaeb1ef3 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -59,7 +59,6 @@
 #include <asm/pgtable.h>
 #include <asm/tlbflush.h>
 #include <asm/reboot.h>
-#include <asm/setup.h>
 #include <asm/stackprotector.h>
 #include <asm/hypervisor.h>
 
diff --git a/arch/xtensa/kernel/ptrace.c b/arch/xtensa/kernel/ptrace.c
index 9d4e1ceb3f09..c72c9473ef99 100644
--- a/arch/xtensa/kernel/ptrace.c
+++ b/arch/xtensa/kernel/ptrace.c
@@ -256,9 +256,11 @@ int ptrace_pokeusr(struct task_struct *child, long regno, long val)
         return 0;
 }
 
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request,
+                 unsigned long addr, unsigned long data)
 {
         int ret = -EPERM;
+        void __user *datap = (void __user *) data;
 
         switch (request) {
         case PTRACE_PEEKTEXT:   /* read word at location addr. */
@@ -267,7 +269,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 break;
 
         case PTRACE_PEEKUSR:    /* read register specified by addr. */
-                ret = ptrace_peekusr(child, addr, (void __user *) data);
+                ret = ptrace_peekusr(child, addr, datap);
                 break;
 
         case PTRACE_POKETEXT:   /* write the word at location addr. */
@@ -280,19 +282,19 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 break;
 
         case PTRACE_GETREGS:
-                ret = ptrace_getregs(child, (void __user *) data);
+                ret = ptrace_getregs(child, datap);
                 break;
 
         case PTRACE_SETREGS:
-                ret = ptrace_setregs(child, (void __user *) data);
+                ret = ptrace_setregs(child, datap);
                 break;
 
         case PTRACE_GETXTREGS:
-                ret = ptrace_getxregs(child, (void __user *) data);
+                ret = ptrace_getxregs(child, datap);
                 break;
 
         case PTRACE_SETXTREGS:
-                ret = ptrace_setxregs(child, (void __user *) data);
+                ret = ptrace_setxregs(child, datap);
                 break;
 
         default: