7 files changed, 43 insertions, 33 deletions

diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S
index aaa47400eb9c..db3389d8e027 100644
--- a/arch/arm/boot/compressed/head.S
+++ b/arch/arm/boot/compressed/head.S
@@ -334,7 +334,7 @@ __setup_mmu:	sub	r3, r4, #16384		@ Page directory size
                 mov     r1, #0x12
                 orr     r1, r1, #3 << 10
                 add     r2, r3, #16384
-1:              cmp     r1, r8                  @ if virt > start of RAM
+1:              cmp     r1, r9                  @ if virt > start of RAM
                 orrhs   r1, r1, #0x0c           @ set cacheable, bufferable
                 cmp     r1, r10                 @ if virt > end of RAM
                 bichs   r1, r1, #0x0c           @ clear cacheable, bufferable
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index 874e6bb79405..d401d908c463 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -735,8 +735,11 @@ __kuser_cmpxchg:				@ 0xffff0fc0
          * The kernel itself must perform the operation.
          * A special ghost syscall is used for that (see traps.c).
          */
+        stmfd   sp!, {r7, lr}
+        mov     r7, #0xff00             @ 0xfff0 into r7 for EABI
+        orr     r7, r7, #0xf0
         swi     #0x9ffff0
-        mov     pc, lr
+        ldmfd   sp!, {r7, pc}
 
 #elif __LINUX_ARM_ARCH__ < 6
 
diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
index 765922bcf9e7..a0cd0a90a10d 100644
--- a/arch/arm/kernel/signal.c
+++ b/arch/arm/kernel/signal.c
@@ -30,15 +30,21 @@
 #define SWI_SYS_RT_SIGRETURN    (0xef000000|(__NR_rt_sigreturn))
 
 /*
+ * With EABI, the syscall number has to be loaded into r7.
+ */
+#define MOV_R7_NR_SIGRETURN     (0xe3a07000 | (__NR_sigreturn - __NR_SYSCALL_BASE))
+#define MOV_R7_NR_RT_SIGRETURN  (0xe3a07000 | (__NR_rt_sigreturn - __NR_SYSCALL_BASE))
+
+/*
  * For Thumb syscalls, we pass the syscall number via r7.  We therefore
  * need two 16-bit instructions.
  */
 #define SWI_THUMB_SIGRETURN     (0xdf00 << 16 | 0x2700 | (__NR_sigreturn - __NR_SYSCALL_BASE))
 #define SWI_THUMB_RT_SIGRETURN  (0xdf00 << 16 | 0x2700 | (__NR_rt_sigreturn - __NR_SYSCALL_BASE))
 
-const unsigned long sigreturn_codes[4] = {
-        SWI_SYS_SIGRETURN,      SWI_THUMB_SIGRETURN,
-        SWI_SYS_RT_SIGRETURN,   SWI_THUMB_RT_SIGRETURN
+const unsigned long sigreturn_codes[7] = {
+        MOV_R7_NR_SIGRETURN,    SWI_SYS_SIGRETURN,    SWI_THUMB_SIGRETURN,
+        MOV_R7_NR_RT_SIGRETURN, SWI_SYS_RT_SIGRETURN, SWI_THUMB_RT_SIGRETURN,
 };
 
 static int do_signal(sigset_t *oldset, struct pt_regs * regs, int syscall);
@@ -189,7 +195,7 @@ struct aux_sigframe {
 struct sigframe {
         struct sigcontext sc;
         unsigned long extramask[_NSIG_WORDS-1];
-        unsigned long retcode;
+        unsigned long retcode[2];
         struct aux_sigframe aux __attribute__((aligned(8)));
 };
 
@@ -198,7 +204,7 @@ struct rt_sigframe {
         void __user *puc;
         struct siginfo info;
         struct ucontext uc;
-        unsigned long retcode;
+        unsigned long retcode[2];
         struct aux_sigframe aux __attribute__((aligned(8)));
 };
 
@@ -436,12 +442,13 @@ setup_return(struct pt_regs *regs, struct k_sigaction *ka,
         if (ka->sa.sa_flags & SA_RESTORER) {
                 retcode = (unsigned long)ka->sa.sa_restorer;
         } else {
-                unsigned int idx = thumb;
+                unsigned int idx = thumb << 1;
 
                 if (ka->sa.sa_flags & SA_SIGINFO)
-                        idx += 2;
+                        idx += 3;
 
-                if (__put_user(sigreturn_codes[idx], rc))
+                if (__put_user(sigreturn_codes[idx],   rc) ||
+                    __put_user(sigreturn_codes[idx+1], rc+1))
                         return 1;
 
                 if (cpsr & MODE32_BIT) {
@@ -456,7 +463,7 @@ setup_return(struct pt_regs *regs, struct k_sigaction *ka,
                          * the return code written onto the stack.
                          */
                         flush_icache_range((unsigned long)rc,
-                                           (unsigned long)(rc + 1));
+                                           (unsigned long)(rc + 2));
 
                         retcode = ((unsigned long)rc) + thumb;
                 }
@@ -488,7 +495,7 @@ setup_frame(int usig, struct k_sigaction *ka, sigset_t *set, struct pt_regs *reg
         }
 
         if (err == 0)
-                err = setup_return(regs, ka, &frame->retcode, frame, usig);
+                err = setup_return(regs, ka, frame->retcode, frame, usig);
 
         return err;
 }
@@ -522,7 +529,7 @@ setup_rt_frame(int usig, struct k_sigaction *ka, siginfo_t *info,
         err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
 
         if (err == 0)
-                err = setup_return(regs, ka, &frame->retcode, frame, usig);
+                err = setup_return(regs, ka, frame->retcode, frame, usig);
 
         if (err == 0) {
                 /*
diff --git a/arch/arm/kernel/signal.h b/arch/arm/kernel/signal.h
index 91d26faca62b..9991049c522d 100644
--- a/arch/arm/kernel/signal.h
+++ b/arch/arm/kernel/signal.h
@@ -9,4 +9,4 @@
  */
 #define KERN_SIGRETURN_CODE     0xffff0500
 
-extern const unsigned long sigreturn_codes[4];
+extern const unsigned long sigreturn_codes[7];
diff --git a/arch/arm/mach-ixp4xx/common.c b/arch/arm/mach-ixp4xx/common.c
index 6b393691d0e8..4bdc9d4526cd 100644
--- a/arch/arm/mach-ixp4xx/common.c
+++ b/arch/arm/mach-ixp4xx/common.c
@@ -333,6 +333,7 @@ static struct platform_device *ixp46x_devices[] __initdata = {
 };
 
 unsigned long ixp4xx_exp_bus_size;
+EXPORT_SYMBOL(ixp4xx_exp_bus_size);
 
 void __init ixp4xx_sys_init(void)
 {
@@ -352,7 +353,7 @@ void __init ixp4xx_sys_init(void)
                 }
         }
 
-        printk("IXP4xx: Using %uMiB expansion bus window size\n",
+        printk("IXP4xx: Using %luMiB expansion bus window size\n",
                         ixp4xx_exp_bus_size >> 20);
 }
 
diff --git a/arch/sparc/mm/iommu.c b/arch/sparc/mm/iommu.c
index 489bf68d5f05..77840c804786 100644
--- a/arch/sparc/mm/iommu.c
+++ b/arch/sparc/mm/iommu.c
@@ -295,8 +295,7 @@ static void iommu_release_one(u32 busa, int npages, struct sbus_bus *sbus)
         int ioptex;
         int i;
 
-        if (busa < iommu->start)
-                BUG();
+        BUG_ON(busa < iommu->start);
         ioptex = (busa - iommu->start) >> PAGE_SHIFT;
         for (i = 0; i < npages; i++) {
                 iopte_val(iommu->page_table[ioptex + i]) = 0;
@@ -340,9 +339,9 @@ static int iommu_map_dma_area(dma_addr_t *pba, unsigned long va,
         iopte_t *first;
         int ioptex;
 
-        if ((va & ~PAGE_MASK) != 0) BUG();
-        if ((addr & ~PAGE_MASK) != 0) BUG();
-        if ((len & ~PAGE_MASK) != 0) BUG();
+        BUG_ON((va & ~PAGE_MASK) != 0);
+        BUG_ON((addr & ~PAGE_MASK) != 0);
+        BUG_ON((len & ~PAGE_MASK) != 0);
 
         /* page color = physical address */
         ioptex = bit_map_string_get(&iommu->usemap, len >> PAGE_SHIFT,
@@ -405,8 +404,8 @@ static void iommu_unmap_dma_area(unsigned long busa, int len)
         unsigned long end;
         int ioptex = (busa - iommu->start) >> PAGE_SHIFT;
 
-        if ((busa & ~PAGE_MASK) != 0) BUG();
-        if ((len & ~PAGE_MASK) != 0) BUG();
+        BUG_ON((busa & ~PAGE_MASK) != 0);
+        BUG_ON((len & ~PAGE_MASK) != 0);
 
         iopte += ioptex;
         end = busa + len;
diff --git a/arch/sparc64/kernel/time.c b/arch/sparc64/kernel/time.c
index 459c8fbe02b4..a22930d62adf 100644
--- a/arch/sparc64/kernel/time.c
+++ b/arch/sparc64/kernel/time.c
@@ -280,9 +280,9 @@ static struct sparc64_tick_ops stick_operations __read_mostly = {
  * Since STICK is constantly updating, we have to access it carefully.
  *
  * The sequence we use to read is:
- * 1) read low
- * 2) read high
- * 3) read low again, if it rolled over increment high by 1
+ * 1) read high
+ * 2) read low
+ * 3) read high again, if it rolled re-read both low and high again.
  *
  * Writing STICK safely is also tricky:
  * 1) write low to zero
@@ -295,18 +295,18 @@ static struct sparc64_tick_ops stick_operations __read_mostly = {
 static unsigned long __hbird_read_stick(void)
 {
         unsigned long ret, tmp1, tmp2, tmp3;
-        unsigned long addr = HBIRD_STICK_ADDR;
+        unsigned long addr = HBIRD_STICK_ADDR+8;
 
-        __asm__ __volatile__("ldxa      [%1] %5, %2\n\t"
-                             "add       %1, 0x8, %1\n\t"
-                             "ldxa      [%1] %5, %3\n\t"
+        __asm__ __volatile__("ldxa      [%1] %5, %2\n"
+                             "1:\n\t"
                              "sub       %1, 0x8, %1\n\t"
+                             "ldxa      [%1] %5, %3\n\t"
+                             "add       %1, 0x8, %1\n\t"
                              "ldxa      [%1] %5, %4\n\t"
                              "cmp       %4, %2\n\t"
-                             "blu,a,pn  %%xcc, 1f\n\t"
-                             " add      %3, 1, %3\n"
-                             "1:\n\t"
-                             "sllx      %3, 32, %3\n\t"
+                             "bne,a,pn  %%xcc, 1b\n\t"
+                             " mov      %4, %2\n\t"
+                             "sllx      %4, 32, %4\n\t"
                              "or        %3, %4, %0\n\t"
                              : "=&r" (ret), "=&r" (addr),
                                "=&r" (tmp1), "=&r" (tmp2), "=&r" (tmp3)