diff options
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 d3e0dfa99e1f..569ec7574baf 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) | |||
| 95 | ({ \ | 95 | ({ \ |
| 96 | int c, old; \ | 96 | int c, old; \ |
| 97 | c = atomic_read(v); \ | 97 | c = atomic_read(v); \ |
| 98 | while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \ | 98 | for (;;) { \ |
| 99 | if (unlikely(c == (u))) \ | ||
| 100 | break; \ | ||
| 101 | old = atomic_cmpxchg((v), c, c + (a)); \ | ||
| 102 | if (likely(old == c)) \ | ||
| 103 | break; \ | ||
| 99 | c = old; \ | 104 | c = old; \ |
| 105 | } \ | ||
| 100 | c != (u); \ | 106 | c != (u); \ |
| 101 | }) | 107 | }) |
| 102 | #define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) | 108 | #define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) |