X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=include%2Fasm-m32r%2Fatomic.h;h=3a38ffe4a4f49991e43b59eb9f18dcb1cb3d32d0;hb=332edc2f7fa58b818dfed1cede60272eecc27c0a;hp=f5a7d7301c72170523cc265402acfc487d16b553;hpb=71d530cd1b6d97094481002a04c77fea1c8e1c22;p=linux-2.6-omap-h63xx.git diff --git a/include/asm-m32r/atomic.h b/include/asm-m32r/atomic.h index f5a7d7301c7..3a38ffe4a4f 100644 --- a/include/asm-m32r/atomic.h +++ b/include/asm-m32r/atomic.h @@ -253,14 +253,21 @@ static __inline__ int atomic_dec_return(atomic_t *v) * Atomically adds @a to @v, so long as it was not @u. * Returns non-zero if @v was not @u, and zero otherwise. */ -#define atomic_add_unless(v, a, u) \ -({ \ - int c, old; \ - c = atomic_read(v); \ - while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \ - c = old; \ - c != (u); \ -}) +static __inline__ int atomic_add_unless(atomic_t *v, int a, int u) +{ + int c, old; + c = atomic_read(v); + for (;;) { + if (unlikely(c == (u))) + break; + old = atomic_cmpxchg((v), c, c + (a)); + if (likely(old == c)) + break; + c = old; + } + return c != (u); +} + #define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) static __inline__ void atomic_clear_mask(unsigned long mask, atomic_t *addr)