| Message ID | 1451473761-30019-25-git-send-email-mst@redhat.com (mailing list archive) |
|---|---|
| State | Awaiting Upstream |
| Delegated to: | Geert Uytterhoeven |
| Headers | show |
diff --git a/arch/sh/include/asm/barrier.h b/arch/sh/include/asm/barrier.h index bf91037..f887c64 100644 --- a/arch/sh/include/asm/barrier.h +++ b/arch/sh/include/asm/barrier.h @@ -32,7 +32,8 @@ #define ctrl_barrier() __asm__ __volatile__ ("nop;nop;nop;nop;nop;nop;nop;nop") #endif -#define smp_store_mb(var, value) do { (void)xchg(&var, value); } while (0) +#define __smp_store_mb(var, value) do { (void)xchg(&var, value); } while (0) +#define smp_store_mb(var, value) __smp_store_mb(var, value) #include <asm-generic/barrier.h>
sh variant of smp_store_mb() calls xchg() on !SMP which is stronger than implied by both the name and the documentation. define __smp_store_mb instead: code in asm-generic/barrier.h will then define smp_store_mb correctly depending on CONFIG_SMP. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> --- arch/sh/include/asm/barrier.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)