Messages in this thread Patch in this message | | | From | Will Deacon <> | Subject | [PATCH v2 3/3] arm64: io: Hook up __io_par() for inX() ordering | Date | Fri, 22 Feb 2019 18:04:54 +0000 |
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Ensure that inX() provides the same ordering guarantees as readX() by hooking up __io_par() so that it maps directly to __iormb().
Reported-by: Andrew Murray <andrew.murray@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> --- arch/arm64/include/asm/io.h | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/arm64/include/asm/io.h b/arch/arm64/include/asm/io.h index ee723835c1f4..8bb7210ac286 100644 --- a/arch/arm64/include/asm/io.h +++ b/arch/arm64/include/asm/io.h @@ -121,6 +121,7 @@ static inline u64 __raw_readq(const volatile void __iomem *addr) : "memory"); \ }) +#define __io_par(v) __iormb(v) #define __iowmb() wmb() #define mmiowb() do { } while (0) -- 2.11.0
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