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-rw-r--r--include/asm-i386/atomic.h8
1 files changed, 7 insertions, 1 deletions
diff --git a/include/asm-i386/atomic.h b/include/asm-i386/atomic.h
index 78b0032d1f29..22d80ece95cb 100644
--- a/include/asm-i386/atomic.h
+++ b/include/asm-i386/atomic.h
@@ -225,8 +225,14 @@ static __inline__ int atomic_sub_return(int i, atomic_t *v)
225({ \ 225({ \
226 int c, old; \ 226 int c, old; \
227 c = atomic_read(v); \ 227 c = atomic_read(v); \
228 while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \ 228 for (;;) { \
229 if (unlikely(c == (u))) \
230 break; \
231 old = atomic_cmpxchg((v), c, c + (a)); \
232 if (likely(old == c)) \
233 break; \
229 c = old; \ 234 c = old; \
235 } \
230 c != (u); \ 236 c != (u); \
231}) 237})
232#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) 238#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)