Commit fb9b050c authored Dec 27, 2015 by Michael S. Tsirkin

sh: fix smp_store_mb for !SMP



sh variant of smp_store_mb() calls xchg() on !SMP which is stronger than
implied by both the name and the documentation.

commit 90a3ccb0 ("sh: define __smp_xxx,
fix smp_store_mb for !SMP") was supposed to fix it but
left the bug in place.

Drop smp_store_mb, so that code in asm-generic/barrier.h
will define it correctly depending on CONFIG_SMP.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

parent a7c49033

arch/sh/include/asm/barrier.h

+0 −1

Original line number	Diff line number	Diff line
		@@ -33,7 +33,6 @@
		#endif

		#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>