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| author | Jeff Garzik <jeff@garzik.org> | 2006-03-24 12:29:39 -0500 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2006-03-24 12:29:39 -0500 |
| commit | 4bbf7bc4c7bf1c80ec3c942fa5f1b6e6fa67dd99 (patch) | |
| tree | c4ff89dc09abe69d58db1e14da22ecda9fdd3ce8 /include/asm-ia64/atomic.h | |
| parent | 84ac69e8bf9f36eb0166817373336d14fa58f5cc (diff) | |
| parent | aec5c3c1a929d7d79a420e943285cf3ba26a7c0d (diff) | |
Merge branch 'upstream'
Conflicts:
drivers/scsi/libata-core.c
Diffstat (limited to 'include/asm-ia64/atomic.h')
| -rw-r--r-- | include/asm-ia64/atomic.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/include/asm-ia64/atomic.h b/include/asm-ia64/atomic.h index d3e0dfa99e1..569ec7574ba 100644 --- a/include/asm-ia64/atomic.h +++ b/include/asm-ia64/atomic.h @@ -95,8 +95,14 @@ ia64_atomic64_sub (__s64 i, atomic64_t *v) ({ \ int c, old; \ c = atomic_read(v); \ - while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \ + for (;;) { \ + if (unlikely(c == (u))) \ + break; \ + old = atomic_cmpxchg((v), c, c + (a)); \ + if (likely(old == c)) \ + break; \ c = old; \ + } \ c != (u); \ }) #define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) |