Merge branch 'topic/pcm-dma-fix' into topic/core-change

4 files changed, 11 insertions, 6 deletions

diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index 0022b4d57f8b..d2903e3bc861 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -21,6 +21,7 @@
 #include <mach/entry-macro.S>
 #include <asm/thread_notify.h>
 #include <asm/unwind.h>
+#include <asm/unistd.h>
 
 #include "entry-header.S"
 
@@ -908,10 +909,10 @@ __kuser_cmpxchg:				@ 0xffff0fc0
          * 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
+        ldr     r7, =1f                 @ it's 20 bits
+        swi     __ARM_NR_cmpxchg
         ldmfd   sp!, {r7, pc}
+1:      .word   __ARM_NR_cmpxchg
 
 #elif __LINUX_ARM_ARCH__ < 6
 
diff --git a/arch/arm/kernel/head-common.S b/arch/arm/kernel/head-common.S
index 885a7214418d..b9505aa267c0 100644
--- a/arch/arm/kernel/head-common.S
+++ b/arch/arm/kernel/head-common.S
@@ -97,7 +97,7 @@ __error_a:
         bl      printhex8
         adr     r0, str_a2
         bl      printascii
-        adr     r3, 3f
+        adr     r3, 4f
         ldmia   r3, {r4, r5, r6}                @ get machine desc list
         sub     r4, r3, r4                      @ get offset between virt&phys
         add     r5, r5, r4                      @ convert virt addresses to
diff --git a/arch/arm/kernel/smp_scu.c b/arch/arm/kernel/smp_scu.c
index d3831f616ee9..9ab4149bd983 100644
--- a/arch/arm/kernel/smp_scu.c
+++ b/arch/arm/kernel/smp_scu.c
@@ -37,6 +37,10 @@ void __init scu_enable(void __iomem *scu_base)
         u32 scu_ctrl;
 
         scu_ctrl = __raw_readl(scu_base + SCU_CTRL);
+        /* already enabled? */
+        if (scu_ctrl & 1)
+                return;
+
         scu_ctrl |= 1;
         __raw_writel(scu_ctrl, scu_base + SCU_CTRL);
 
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 95718a6b50a6..3f361a783f43 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -528,7 +528,7 @@ asmlinkage int arm_syscall(int no, struct pt_regs *regs)
          * __kuser_cmpxchg code in entry-armv.S should be aware of its
          * existence.  Don't ever use this from user code.
          */
-        case 0xfff0:
+        case NR(cmpxchg):
         for (;;) {
                 extern void do_DataAbort(unsigned long addr, unsigned int fsr,
                                          struct pt_regs *regs);
@@ -573,7 +573,7 @@ asmlinkage int arm_syscall(int no, struct pt_regs *regs)
                    if not implemented, rather than raising SIGILL.  This
                    way the calling program can gracefully determine whether
                    a feature is supported.  */
-                if (no <= 0x7ff)
+                if ((no & 0xffff) <= 0x7ff)
                         return -ENOSYS;
                 break;
         }