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| author | Greg Ungerer <gerg@snapgear.com> | 2008-02-15 04:31:25 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-15 05:58:05 +0100 |
| commit | 091b76d6aa788d8294caa2895cea1013f3eff7da (patch) | |
| tree | f9dce5d9d5a64512cc388c7e7fbc4561a34448fe | |
| parent | m68knommu: fix coldfire interrupt exit path (diff) | |
| download | linux-091b76d6aa788d8294caa2895cea1013f3eff7da.tar.xz linux-091b76d6aa788d8294caa2895cea1013f3eff7da.zip | |
m68knommu: avoid unneccessary use of xchg() in set_mb()
Avoid unneccessary use of xchg() in set_mb().
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | include/asm-m68knommu/system.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/asm-m68knommu/system.h b/include/asm-m68knommu/system.h index 039ab3f81732..64c64432bbb8 100644 --- a/include/asm-m68knommu/system.h +++ b/include/asm-m68knommu/system.h @@ -104,7 +104,7 @@ asmlinkage void resume(void); #define mb() asm volatile ("" : : :"memory") #define rmb() asm volatile ("" : : :"memory") #define wmb() asm volatile ("" : : :"memory") -#define set_mb(var, value) do { xchg(&var, value); } while (0) +#define set_mb(var, value) ({ (var) = (value); wmb(); }) #ifdef CONFIG_SMP #define smp_mb() mb() |