Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=091b76d6aa788d8294caa2895cea1013f3eff7da
Commit: 091b76d6aa788d8294caa2895cea1013f3eff7da
Parent: 903be1c56444615342ac5f1fc103e2ec11043714
Author: Greg Ungerer <[EMAIL PROTECTED]>
AuthorDate: Thu Feb 14 19:31:25 2008 -0800
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Thu Feb 14 20:58:05 2008 -0800
m68knommu: avoid unneccessary use of xchg() in set_mb()
Avoid unneccessary use of xchg() in set_mb().
Signed-off-by: Greg Ungerer <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
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 039ab3f..64c6443 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()
-
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