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authorWill Deacon <will.deacon@arm.com>2013-09-04 11:34:08 +0100
committerWill Deacon <will.deacon@arm.com>2014-10-20 18:49:18 +0100
commit5da590574cbc39e48d1b71d87b62766c044b9b52 (patch)
tree075ee1b4d8173479dec12aeeddc0a5cd3307ac6b /arch/powerpc/include/asm/io.h
parent2f083481cfd38320ebde0b83d836b967a2419d53 (diff)
downloadlinux-5da590574cbc39e48d1b71d87b62766c044b9b52.tar.bz2
powerpc: io: implement dummy relaxed accessor macros for writes
write{b,w,l,q}_relaxed are implemented by some architectures in order to permit memory-mapped I/O accesses with weaker barrier semantics than the non-relaxed variants. This patch adds dummy macros for the write accessors to powerpc, in the same vein as the dummy definitions for the relaxed read accessors. Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/powerpc/include/asm/io.h')
-rw-r--r--arch/powerpc/include/asm/io.h12
1 files changed, 8 insertions, 4 deletions
diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h
index 97d3869991ca..9eaf301ac952 100644
--- a/arch/powerpc/include/asm/io.h
+++ b/arch/powerpc/include/asm/io.h
@@ -617,10 +617,14 @@ static inline void name at \
/*
* We don't do relaxed operations yet, at least not with this semantic
*/
-#define readb_relaxed(addr) readb(addr)
-#define readw_relaxed(addr) readw(addr)
-#define readl_relaxed(addr) readl(addr)
-#define readq_relaxed(addr) readq(addr)
+#define readb_relaxed(addr) readb(addr)
+#define readw_relaxed(addr) readw(addr)
+#define readl_relaxed(addr) readl(addr)
+#define readq_relaxed(addr) readq(addr)
+#define writeb_relaxed(v, addr) writeb(v, addr)
+#define writew_relaxed(v, addr) writew(v, addr)
+#define writel_relaxed(v, addr) writel(v, addr)
+#define writeq_relaxed(v, addr) writeq(v, addr)
#ifdef CONFIG_PPC32
#define mmiowb()