From 2c97a9cc35a7a73a7580a8e2632419ff3c0b0fe5 Mon Sep 17 00:00:00 2001
From: Will Deacon <will.deacon@arm.com>
Date: Fri, 22 Feb 2019 18:04:54 +0000
Subject: [PATCH] arm64: io: Hook up __io_par() for inX() ordering
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>
---
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 ee723835c1f4b..8bb7210ac286c 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)
--
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