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-rw-r--r--arch/powerpc/include/asm/spinlock.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/spinlock.h b/arch/powerpc/include/asm/spinlock.h
index a30ef6999d66..35aa339410bd 100644
--- a/arch/powerpc/include/asm/spinlock.h
+++ b/arch/powerpc/include/asm/spinlock.h
@@ -28,6 +28,8 @@
#include <asm/synch.h>
#include <asm/ppc-opcode.h>
+#define smp_mb__after_unlock_lock() smp_mb() /* Full ordering for lock. */
+
#ifdef CONFIG_PPC64
/* use 0x800000yy when locked, where yy == CPU number */
#ifdef __BIG_ENDIAN__