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| author | Linus Torvalds <torvalds@g5.osdl.org> | 2006-07-08 15:00:28 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-07-08 15:00:28 -0700 |
| commit | e2a3d40258fe20d205f8ed592e1e2c0d5529c2e1 (patch) | |
| tree | b8d778fb559c581e08bfc86831d16ee1cd43c841 /include/asm-powerpc/system.h | |
| parent | a496e25dfb25493a57bcee5d66875d6ff80a9093 (diff) | |
| download | lwn-e2a3d40258fe20d205f8ed592e1e2c0d5529c2e1.tar.gz lwn-e2a3d40258fe20d205f8ed592e1e2c0d5529c2e1.zip | |
power: improve inline asm memory constraints
Use "+m" rather than a combination of "=m" and "m" for improved
clarity and consistency.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-powerpc/system.h')
| -rw-r--r-- | include/asm-powerpc/system.h | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/include/asm-powerpc/system.h b/include/asm-powerpc/system.h index d075725bf444..c6569516ba35 100644 --- a/include/asm-powerpc/system.h +++ b/include/asm-powerpc/system.h @@ -220,8 +220,8 @@ __xchg_u32(volatile void *p, unsigned long val) " stwcx. %3,0,%2 \n\ bne- 1b" ISYNC_ON_SMP - : "=&r" (prev), "=m" (*(volatile unsigned int *)p) - : "r" (p), "r" (val), "m" (*(volatile unsigned int *)p) + : "=&r" (prev), "+m" (*(volatile unsigned int *)p) + : "r" (p), "r" (val) : "cc", "memory"); return prev; @@ -240,8 +240,8 @@ __xchg_u64(volatile void *p, unsigned long val) " stdcx. %3,0,%2 \n\ bne- 1b" ISYNC_ON_SMP - : "=&r" (prev), "=m" (*(volatile unsigned long *)p) - : "r" (p), "r" (val), "m" (*(volatile unsigned long *)p) + : "=&r" (prev), "+m" (*(volatile unsigned long *)p) + : "r" (p), "r" (val) : "cc", "memory"); return prev; @@ -299,8 +299,8 @@ __cmpxchg_u32(volatile unsigned int *p, unsigned long old, unsigned long new) ISYNC_ON_SMP "\n\ 2:" - : "=&r" (prev), "=m" (*p) - : "r" (p), "r" (old), "r" (new), "m" (*p) + : "=&r" (prev), "+m" (*p) + : "r" (p), "r" (old), "r" (new) : "cc", "memory"); return prev; @@ -322,8 +322,8 @@ __cmpxchg_u64(volatile unsigned long *p, unsigned long old, unsigned long new) ISYNC_ON_SMP "\n\ 2:" - : "=&r" (prev), "=m" (*p) - : "r" (p), "r" (old), "r" (new), "m" (*p) + : "=&r" (prev), "+m" (*p) + : "r" (p), "r" (old), "r" (new) : "cc", "memory"); return prev; |