Commit 5da59057 authored Sep 04, 2013 by Will Deacon

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>

parent 2f083481

arch/powerpc/include/asm/io.h

+8 −4

Original line number	Diff line number	Diff line
		@@ -621,6 +621,10 @@ static inline void name at \
		#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()

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