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| author | Michael S. Tsirkin <mst@redhat.com> | 2015-12-27 14:04:42 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2016-01-26 09:18:29 +0100 |
| commit | fb9b050ce9695cf2769a850d94aa2ab39c8c3cd5 (patch) | |
| tree | 1ce0cd003c4c6d8cb5d42130e47fa7b9c078a6ea /arch/sh/include | |
| parent | tools/virtio: use virt_xxx barriers (diff) | |
| download | linux-fb9b050ce9695cf2769a850d94aa2ab39c8c3cd5.tar.xz linux-fb9b050ce9695cf2769a850d94aa2ab39c8c3cd5.zip | |
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 90a3ccb0be538a914e6a5c51ae919762261563ad ("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>
Diffstat (limited to 'arch/sh/include')
| -rw-r--r-- | arch/sh/include/asm/barrier.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/sh/include/asm/barrier.h b/arch/sh/include/asm/barrier.h index f887c6465a82..8a84e05adb2e 100644 --- a/arch/sh/include/asm/barrier.h +++ b/arch/sh/include/asm/barrier.h @@ -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> |