diff options
Diffstat (limited to 'arch/blackfin/include/asm/spinlock.h')
| -rw-r--r-- | arch/blackfin/include/asm/spinlock.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/blackfin/include/asm/spinlock.h b/arch/blackfin/include/asm/spinlock.h index 490c7caa02d9..c58f4a83ed6f 100644 --- a/arch/blackfin/include/asm/spinlock.h +++ b/arch/blackfin/include/asm/spinlock.h @@ -12,6 +12,8 @@ #else #include <linux/atomic.h> +#include <asm/processor.h> +#include <asm/barrier.h> asmlinkage int __raw_spin_is_locked_asm(volatile int *ptr); asmlinkage void __raw_spin_lock_asm(volatile int *ptr); @@ -48,8 +50,7 @@ static inline void arch_spin_unlock(arch_spinlock_t *lock) static inline void arch_spin_unlock_wait(arch_spinlock_t *lock) { - while (arch_spin_is_locked(lock)) - cpu_relax(); + smp_cond_load_acquire(&lock->lock, !VAL); } static inline int arch_read_can_lock(arch_rwlock_t *rw) |