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arm64: io: Hook up __io_par() for inX() ordering

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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>
Reviewed-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Will Deacon 2019-02-22 18:04:54 +00:00 committed by Catalin Marinas
parent ce246c444a
commit 2c97a9cc35
1 changed files with 1 additions and 0 deletions
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arch/arm64/include/asm/io.h
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@ -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)