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-rw-r--r--arch/sh/include/asm/io.h3
1 files changed, 0 insertions, 3 deletions
diff --git a/arch/sh/include/asm/io.h b/arch/sh/include/asm/io.h
index 4f7f235f15f8..c28e37a344ad 100644
--- a/arch/sh/include/asm/io.h
+++ b/arch/sh/include/asm/io.h
@@ -229,9 +229,6 @@ __BUILD_IOPORT_STRING(q, u64)
#define IO_SPACE_LIMIT 0xffffffff
-/* synco on SH-4A, otherwise a nop */
-#define mmiowb() wmb()
-
/* We really want to try and get these to memcpy etc */
void memcpy_fromio(void *, const volatile void __iomem *, unsigned long);
void memcpy_toio(volatile void __iomem *, const void *, unsigned long);