diff options
| author | Haavard Skinnemoen <haavard.skinnemoen@atmel.com> | 2009-03-27 16:14:38 +0100 |
|---|---|---|
| committer | Haavard Skinnemoen <haavard.skinnemoen@atmel.com> | 2009-03-27 16:14:38 +0100 |
| commit | b92efa9abffc4a634cd2e7a0f81f8aa6310d67c9 (patch) | |
| tree | 9847508d9b8d4e585f90db4a453bfbc3700c997e /arch/sh/include/asm/mutex-llsc.h | |
| parent | a16fffdd8eb95ebab7dc22414896fe6493951e0e (diff) | |
| parent | be0ea69674ed95e1e98cb3687a241badc756d228 (diff) | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into avr32-arch
Diffstat (limited to 'arch/sh/include/asm/mutex-llsc.h')
| -rw-r--r-- | arch/sh/include/asm/mutex-llsc.h | 21 |
1 files changed, 9 insertions, 12 deletions
diff --git a/arch/sh/include/asm/mutex-llsc.h b/arch/sh/include/asm/mutex-llsc.h index ee839ee58ac..090358a7e1b 100644 --- a/arch/sh/include/asm/mutex-llsc.h +++ b/arch/sh/include/asm/mutex-llsc.h @@ -21,38 +21,36 @@ static inline void __mutex_fastpath_lock(atomic_t *count, void (*fail_fn)(atomic_t *)) { - int __ex_flag, __res; + int __done, __res; __asm__ __volatile__ ( "movli.l @%2, %0 \n" "add #-1, %0 \n" "movco.l %0, @%2 \n" "movt %1 \n" - : "=&z" (__res), "=&r" (__ex_flag) + : "=&z" (__res), "=&r" (__done) : "r" (&(count)->counter) : "t"); - __res |= !__ex_flag; - if (unlikely(__res != 0)) + if (unlikely(!__done || __res != 0)) fail_fn(count); } static inline int __mutex_fastpath_lock_retval(atomic_t *count, int (*fail_fn)(atomic_t *)) { - int __ex_flag, __res; + int __done, __res; __asm__ __volatile__ ( "movli.l @%2, %0 \n" "add #-1, %0 \n" "movco.l %0, @%2 \n" "movt %1 \n" - : "=&z" (__res), "=&r" (__ex_flag) + : "=&z" (__res), "=&r" (__done) : "r" (&(count)->counter) : "t"); - __res |= !__ex_flag; - if (unlikely(__res != 0)) + if (unlikely(!__done || __res != 0)) __res = fail_fn(count); return __res; @@ -61,19 +59,18 @@ __mutex_fastpath_lock_retval(atomic_t *count, int (*fail_fn)(atomic_t *)) static inline void __mutex_fastpath_unlock(atomic_t *count, void (*fail_fn)(atomic_t *)) { - int __ex_flag, __res; + int __done, __res; __asm__ __volatile__ ( "movli.l @%2, %0 \n\t" "add #1, %0 \n\t" "movco.l %0, @%2 \n\t" "movt %1 \n\t" - : "=&z" (__res), "=&r" (__ex_flag) + : "=&z" (__res), "=&r" (__done) : "r" (&(count)->counter) : "t"); - __res |= !__ex_flag; - if (unlikely(__res <= 0)) + if (unlikely(!__done || __res <= 0)) fail_fn(count); } |