diff options
Diffstat (limited to 'include/asm-sh/system.h')
| -rw-r--r-- | include/asm-sh/system.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/asm-sh/system.h b/include/asm-sh/system.h index e89728d405d838..eb4902ed920a94 100644 --- a/include/asm-sh/system.h +++ b/include/asm-sh/system.h @@ -84,10 +84,17 @@ static __inline__ unsigned long tas(volatile int *m) extern void __xchg_called_with_bad_pointer(void); +#ifdef CONFIG_CPU_SH4A +#define mb() __asm__ __volatile__ ("synco": : :"memory") +#define rmb() mb() +#define wmb() __asm__ __volatile__ ("synco": : :"memory") +#define read_barrier_depends() do { } while(0) +#else #define mb() __asm__ __volatile__ ("": : :"memory") #define rmb() mb() #define wmb() __asm__ __volatile__ ("": : :"memory") #define read_barrier_depends() do { } while(0) +#endif #ifdef CONFIG_SMP #define smp_mb() mb() |