diff options
Diffstat (limited to 'arch/sh/include/asm/mutex-llsc.h')
| -rw-r--r-- | arch/sh/include/asm/mutex-llsc.h | 25 |
1 files changed, 11 insertions, 14 deletions
diff --git a/arch/sh/include/asm/mutex-llsc.h b/arch/sh/include/asm/mutex-llsc.h index ee839ee58ac..dad29b687bd 100644 --- a/arch/sh/include/asm/mutex-llsc.h +++ b/arch/sh/include/asm/mutex-llsc.h @@ -21,39 +21,37 @@ 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 *)) +__mutex_fastpath_lock_retval(atomic_t *count) { - 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)) - __res = fail_fn(count); + if (unlikely(!__done || __res != 0)) + __res = -1; 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); } |