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nds32/io: Remove useless definition of mmiowb()

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mmiowb() only makes sense for SMP platforms, so we can remove it
entirely for nds32.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Acked-by: Greentime Hu <greentime@andestech.com>
Signed-off-by: Greentime Hu <greentime@andestech.com>
This commit is contained in:
Will Deacon 2019-03-01 14:03:35 +00:00 committed by Greentime Hu
parent e1bf776363
commit 8ac7857406
1 changed files with 0 additions and 2 deletions
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arch/nds32/include/asm/io.h
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@ -55,8 +55,6 @@ static inline u32 __raw_readl(const volatile void __iomem *addr)
#define __iormb() rmb()
#define __iowmb() wmb()
#define mmiowb() __asm__ __volatile__ ("msync all" : : : "memory");
/*
* {read,write}{b,w,l,q}_relaxed() are like the regular version, but
* are not guaranteed to provide ordering against spinlocks or memory