Merge with http://kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git

12 files changed, 37 insertions, 230 deletions

diff --git a/arch/arm/kernel/armksyms.c b/arch/arm/kernel/armksyms.c
index 7a3261f0bf79..9997098009a9 100644
--- a/arch/arm/kernel/armksyms.c
+++ b/arch/arm/kernel/armksyms.c
@@ -120,7 +120,6 @@ EXPORT_SYMBOL(__arch_strncpy_from_user);
 EXPORT_SYMBOL(__get_user_1);
 EXPORT_SYMBOL(__get_user_2);
 EXPORT_SYMBOL(__get_user_4);
-EXPORT_SYMBOL(__get_user_8);
 
 EXPORT_SYMBOL(__put_user_1);
 EXPORT_SYMBOL(__put_user_2);
diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S
index 066597f4345a..f7f183075237 100644
--- a/arch/arm/kernel/entry-common.S
+++ b/arch/arm/kernel/entry-common.S
@@ -48,8 +48,7 @@ work_pending:
         mov     r0, sp                          @ 'regs'
         mov     r2, why                         @ 'syscall'
         bl      do_notify_resume
-        disable_irq                             @ disable interrupts
-        b       no_work_pending
+        b       ret_slow_syscall                @ Check work again
 
 work_resched:
         bl      schedule
diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
index a917e3dd3666..765922bcf9e7 100644
--- a/arch/arm/kernel/signal.c
+++ b/arch/arm/kernel/signal.c
@@ -595,23 +595,22 @@ handle_signal(unsigned long sig, struct k_sigaction *ka,
          */
         ret |= !valid_user_regs(regs);
 
-        /*
-         * Block the signal if we were unsuccessful.
-         */
         if (ret != 0) {
-                spin_lock_irq(&tsk->sighand->siglock);
-                sigorsets(&tsk->blocked, &tsk->blocked,
-                          &ka->sa.sa_mask);
-                if (!(ka->sa.sa_flags & SA_NODEFER))
-                        sigaddset(&tsk->blocked, sig);
-                recalc_sigpending();
-                spin_unlock_irq(&tsk->sighand->siglock);
+                force_sigsegv(sig, tsk);
+                return;
         }
 
-        if (ret == 0)
-                return;
+        /*
+         * Block the signal if we were successful.
+         */
+        spin_lock_irq(&tsk->sighand->siglock);
+        sigorsets(&tsk->blocked, &tsk->blocked,
+                  &ka->sa.sa_mask);
+        if (!(ka->sa.sa_flags & SA_NODEFER))
+                sigaddset(&tsk->blocked, sig);
+        recalc_sigpending();
+        spin_unlock_irq(&tsk->sighand->siglock);
 
-        force_sigsegv(sig, tsk);
 }
 
 /*
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index 80c8e4c8cefa..9a47770114d4 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -172,6 +172,10 @@ SECTIONS
         .comment 0 : { *(.comment) }
 }
 
-/* those must never be empty */
+/*
+ * These must never be empty
+ * If you have to comment these two assert statements out, your
+ * binutils is too old (for other reasons as well)
+ */
 ASSERT((__proc_info_end - __proc_info_begin), "missing CPU support")
 ASSERT((__arch_info_end - __arch_info_begin), "no machine record defined")
diff --git a/arch/arm/lib/getuser.S b/arch/arm/lib/getuser.S
index d204018070a4..c03ea8e666ba 100644
--- a/arch/arm/lib/getuser.S
+++ b/arch/arm/lib/getuser.S
@@ -54,15 +54,6 @@ __get_user_4:
         mov     r0, #0
         mov     pc, lr
 
-        .global __get_user_8
-__get_user_8:
-5:      ldrt    r2, [r0], #4
-6:      ldrt    r3, [r0]
-        mov     r0, #0
-        mov     pc, lr
-
-__get_user_bad_8:
-        mov     r3, #0
 __get_user_bad:
         mov     r2, #0
         mov     r0, #-EFAULT
@@ -73,6 +64,4 @@ __get_user_bad:
         .long   2b, __get_user_bad
         .long   3b, __get_user_bad
         .long   4b, __get_user_bad
-        .long   5b, __get_user_bad_8
-        .long   6b, __get_user_bad_8
 .previous
diff --git a/arch/arm/mach-clps7500/core.c b/arch/arm/mach-clps7500/core.c
index 0364ba4b539e..d869af0023f8 100644
--- a/arch/arm/mach-clps7500/core.c
+++ b/arch/arm/mach-clps7500/core.c
@@ -260,7 +260,7 @@ static void __init clps7500_init_irq(void)
 
 static struct map_desc cl7500_io_desc[] __initdata = {
         {       /* IO space     */
-                .virtual        = IO_BASE,
+                .virtual        = (unsigned long)IO_BASE,
                 .pfn            = __phys_to_pfn(IO_START),
                 .length         = IO_SIZE,
                 .type           = MT_DEVICE
diff --git a/arch/arm/mach-pxa/tosa.c b/arch/arm/mach-pxa/tosa.c
index c312054dfb88..e4f92efc616e 100644
--- a/arch/arm/mach-pxa/tosa.c
+++ b/arch/arm/mach-pxa/tosa.c
@@ -14,7 +14,7 @@
 
 #include <linux/kernel.h>
 #include <linux/init.h>
-#include <linux/device.h>
+#include <linux/platform_device.h>
 #include <linux/major.h>
 #include <linux/fs.h>
 #include <linux/interrupt.h>
diff --git a/arch/arm/mach-sa1100/assabet.c b/arch/arm/mach-sa1100/assabet.c
index 75efb5da5b6d..a66ac61233a2 100644
--- a/arch/arm/mach-sa1100/assabet.c
+++ b/arch/arm/mach-sa1100/assabet.c
@@ -293,7 +293,8 @@ static void __init get_assabet_scr(void)
         GPDR |= 0x3fc;                  /* Configure GPIO 9:2 as outputs */
         GPSR = 0x3fc;                   /* Write 0xFF to GPIO 9:2 */
         GPDR &= ~(0x3fc);               /* Configure GPIO 9:2 as inputs */
-        for(i = 100; i--; scr = GPLR);  /* Read GPIO 9:2 */
+        for(i = 100; i--; )             /* Read GPIO 9:2 */
+                scr = GPLR;
         GPDR |= 0x3fc;                  /*  restore correct pin direction */
         scr &= 0x3fc;                   /* save as system configuration byte. */
         SCR_value = scr;
diff --git a/arch/arm/mm/Makefile b/arch/arm/mm/Makefile
index 59f47d4c2dfe..ffe73ba2bf17 100644
--- a/arch/arm/mm/Makefile
+++ b/arch/arm/mm/Makefile
@@ -51,4 +51,4 @@ obj-$(CONFIG_CPU_ARM1026)	+= proc-arm1026.o
 obj-$(CONFIG_CPU_SA110)         += proc-sa110.o
 obj-$(CONFIG_CPU_SA1100)        += proc-sa1100.o
 obj-$(CONFIG_CPU_XSCALE)        += proc-xscale.o
-obj-$(CONFIG_CPU_V6)            += proc-v6.o blockops.o
+obj-$(CONFIG_CPU_V6)            += proc-v6.o
diff --git a/arch/arm/mm/blockops.c b/arch/arm/mm/blockops.c
deleted file mode 100644
index 4f5ee2d08996..000000000000
--- a/arch/arm/mm/blockops.c
+++ /dev/null
@@ -1,185 +0,0 @@
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/errno.h>
-#include <linux/mm.h>
-
-#include <asm/memory.h>
-#include <asm/ptrace.h>
-#include <asm/cacheflush.h>
-#include <asm/traps.h>
-
-extern struct cpu_cache_fns blk_cache_fns;
-
-#define HARVARD_CACHE
-
-/*
- *      blk_flush_kern_dcache_page(kaddr)
- *
- *      Ensure that the data held in the page kaddr is written back
- *      to the page in question.
- *
- *      - kaddr   - kernel address (guaranteed to be page aligned)
- */
-static void __attribute__((naked))
-blk_flush_kern_dcache_page(void *kaddr)
-{
-        asm(
-        "add    r1, r0, %0                                                      \n\
-        sub     r1, r1, %1                                                      \n\
-1:      .word   0xec401f0e      @ mcrr  p15, 0, r0, r1, c14, 0  @ blocking      \n\
-        mov     r0, #0                                                          \n\
-        mcr     p15, 0, r0, c7, c5, 0                                           \n\
-        mcr     p15, 0, r0, c7, c10, 4                                          \n\
-        mov     pc, lr"
-        :
-        : "I" (PAGE_SIZE), "I" (L1_CACHE_BYTES));
-}
-
-/*
- *      blk_dma_inv_range(start,end)
- *
- *      Invalidate the data cache within the specified region; we will
- *      be performing a DMA operation in this region and we want to
- *      purge old data in the cache.
- *
- *      - start   - virtual start address of region
- *      - end     - virtual end address of region
- */
-static void __attribute__((naked))
-blk_dma_inv_range_unified(unsigned long start, unsigned long end)
-{
-        asm(
-        "tst    r0, %0                                                          \n\
-        mcrne   p15, 0, r0, c7, c11, 1          @ clean unified line            \n\
-        tst     r1, %0                                                          \n\
-        mcrne   p15, 0, r1, c7, c15, 1          @ clean & invalidate unified line\n\
-        .word   0xec401f06      @ mcrr  p15, 0, r1, r0, c6, 0   @ blocking      \n\
-        mov     r0, #0                                                          \n\
-        mcr     p15, 0, r0, c7, c10, 4          @ drain write buffer            \n\
-        mov     pc, lr"
-        :
-        : "I" (L1_CACHE_BYTES - 1));
-}
-
-static void __attribute__((naked))
-blk_dma_inv_range_harvard(unsigned long start, unsigned long end)
-{
-        asm(
-        "tst    r0, %0                                                          \n\
-        mcrne   p15, 0, r0, c7, c10, 1          @ clean D line                  \n\
-        tst     r1, %0                                                          \n\
-        mcrne   p15, 0, r1, c7, c14, 1          @ clean & invalidate D line     \n\
-        .word   0xec401f06      @ mcrr  p15, 0, r1, r0, c6, 0   @ blocking      \n\
-        mov     r0, #0                                                          \n\
-        mcr     p15, 0, r0, c7, c10, 4          @ drain write buffer            \n\
-        mov     pc, lr"
-        :
-        : "I" (L1_CACHE_BYTES - 1));
-}
-
-/*
- *      blk_dma_clean_range(start,end)
- *      - start   - virtual start address of region
- *      - end     - virtual end address of region
- */
-static void __attribute__((naked))
-blk_dma_clean_range(unsigned long start, unsigned long end)
-{
-        asm(
-        ".word  0xec401f0c      @ mcrr  p15, 0, r1, r0, c12, 0  @ blocking      \n\
-        mov     r0, #0                                                          \n\
-        mcr     p15, 0, r0, c7, c10, 4          @ drain write buffer            \n\
-        mov     pc, lr");
-}
-
-/*
- *      blk_dma_flush_range(start,end)
- *      - start   - virtual start address of region
- *      - end     - virtual end address of region
- */
-static void __attribute__((naked))
-blk_dma_flush_range(unsigned long start, unsigned long end)
-{
-        asm(
-        ".word  0xec401f0e      @ mcrr  p15, 0, r1, r0, c14, 0  @ blocking      \n\
-        mov     pc, lr");
-}
-
-static int blockops_trap(struct pt_regs *regs, unsigned int instr)
-{
-        regs->ARM_r4 |= regs->ARM_r2;
-        regs->ARM_pc += 4;
-        return 0;
-}
-
-static char *func[] = {
-        "Prefetch data range",
-        "Clean+Invalidate data range",
-        "Clean data range",
-        "Invalidate data range",
-        "Invalidate instr range"
-};
-
-static struct undef_hook blockops_hook __initdata = {
-        .instr_mask     = 0x0fffffd0,
-        .instr_val      = 0x0c401f00,
-        .cpsr_mask      = PSR_T_BIT,
-        .cpsr_val       = 0,
-        .fn             = blockops_trap,
-};
-
-static int __init blockops_check(void)
-{
-        register unsigned int err asm("r4") = 0;
-        unsigned int err_pos = 1;
-        unsigned int cache_type;
-        int i;
-
-        asm("mrc p15, 0, %0, c0, c0, 1" : "=r" (cache_type));
-
-        printk("Checking V6 block cache operations:\n");
-        register_undef_hook(&blockops_hook);
-
-        __asm__ ("mov   r0, %0\n\t"
-                "mov    r1, %1\n\t"
-                "mov    r2, #1\n\t"
-                ".word  0xec401f2c @ mcrr p15, 0, r1, r0, c12, 2\n\t"
-                "mov    r2, #2\n\t"
-                ".word  0xec401f0e @ mcrr p15, 0, r1, r0, c14, 0\n\t"
-                "mov    r2, #4\n\t"
-                ".word  0xec401f0c @ mcrr p15, 0, r1, r0, c12, 0\n\t"
-                "mov    r2, #8\n\t"
-                ".word  0xec401f06 @ mcrr p15, 0, r1, r0, c6, 0\n\t"
-                "mov    r2, #16\n\t"
-                ".word  0xec401f05 @ mcrr p15, 0, r1, r0, c5, 0\n\t"
-                :
-                : "r" (PAGE_OFFSET), "r" (PAGE_OFFSET + 128)
-                : "r0", "r1", "r2");
-
-        unregister_undef_hook(&blockops_hook);
-
-        for (i = 0; i < ARRAY_SIZE(func); i++, err_pos <<= 1)
-                printk("%30s: %ssupported\n", func[i], err & err_pos ? "not " : "");
-
-        if ((err & 8) == 0) {
-                printk(" --> Using %s block cache invalidate\n",
-                        cache_type & (1 << 24) ? "harvard" : "unified");
-                if (cache_type & (1 << 24))
-                        cpu_cache.dma_inv_range = blk_dma_inv_range_harvard;
-                else
-                        cpu_cache.dma_inv_range = blk_dma_inv_range_unified;
-        }
-        if ((err & 4) == 0) {
-                printk(" --> Using block cache clean\n");
-                cpu_cache.dma_clean_range        = blk_dma_clean_range;
-        }
-        if ((err & 2) == 0) {
-                printk(" --> Using block cache clean+invalidate\n");
-                cpu_cache.dma_flush_range        = blk_dma_flush_range;
-                cpu_cache.flush_kern_dcache_page = blk_flush_kern_dcache_page;
-        }
-
-        return 0;
-}
-
-__initcall(blockops_check);
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index c168f322ef8c..8b276ee38acf 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -420,7 +420,8 @@ static void __init bootmem_init(struct meminfo *mi)
  * Set up device the mappings.  Since we clear out the page tables for all
  * mappings above VMALLOC_END, we will remove any debug device mappings.
  * This means you have to be careful how you debug this function, or any
- * called function.  (Do it by code inspection!)
+ * called function.  This means you can't use any function or debugging
+ * method which may touch any device, otherwise the kernel _will_ crash.
  */
 static void __init devicemaps_init(struct machine_desc *mdesc)
 {
@@ -428,6 +429,12 @@ static void __init devicemaps_init(struct machine_desc *mdesc)
         unsigned long addr;
         void *vectors;
 
+        /*
+         * Allocate the vector page early.
+         */
+        vectors = alloc_bootmem_low_pages(PAGE_SIZE);
+        BUG_ON(!vectors);
+
         for (addr = VMALLOC_END; addr; addr += PGDIR_SIZE)
                 pmd_clear(pmd_off_k(addr));
 
@@ -461,12 +468,6 @@ static void __init devicemaps_init(struct machine_desc *mdesc)
         create_mapping(&map);
 #endif
 
-        flush_cache_all();
-        local_flush_tlb_all();
-
-        vectors = alloc_bootmem_low_pages(PAGE_SIZE);
-        BUG_ON(!vectors);
-
         /*
          * Create a mapping for the machine vectors at the high-vectors
          * location (0xffff0000).  If we aren't using high-vectors, also
@@ -491,12 +492,13 @@ static void __init devicemaps_init(struct machine_desc *mdesc)
                 mdesc->map_io();
 
         /*
-         * Finally flush the tlb again - this ensures that we're in a
-         * consistent state wrt the writebuffer if the writebuffer needs
-         * draining.  After this point, we can start to touch devices
-         * again.
+         * Finally flush the caches and tlb to ensure that we're in a
+         * consistent state wrt the writebuffer.  This also ensures that
+         * any write-allocated cache lines in the vector page are written
+         * back.  After this point, we can start to touch devices again.
          */
         local_flush_tlb_all();
+        flush_cache_all();
 }
 
 /*
diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c
index 0f128c28fee4..10901398e4a2 100644
--- a/arch/arm/mm/ioremap.c
+++ b/arch/arm/mm/ioremap.c
@@ -130,8 +130,7 @@ remap_area_pages(unsigned long start, unsigned long phys_addr,
  * mapping.  See include/asm-arm/proc-armv/pgtable.h for more information.
  */
 void __iomem *
-__ioremap(unsigned long phys_addr, size_t size, unsigned long flags,
-          unsigned long align)
+__ioremap(unsigned long phys_addr, size_t size, unsigned long flags)
 {
         void * addr;
         struct vm_struct * area;