Merge branch 'linus'

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)
 ({                                                              \
         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)