Messages in this thread Patch in this message | | | From | Will Deacon <> | Subject | [PATCH v2 08/18] ia64: io: implement dummy relaxed accessor macros for writes | Date | Thu, 22 May 2014 17:47:20 +0100 |
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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 ia64, which may be able to be optimised in a similar manner to the relaxed read accessors at a later date.
Cc: Tony Luck <tony.luck@intel.com> Signed-off-by: Will Deacon <will.deacon@arm.com> --- arch/ia64/include/asm/io.h | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/arch/ia64/include/asm/io.h b/arch/ia64/include/asm/io.h index 0d2bcb37ec35..379165154c27 100644 --- a/arch/ia64/include/asm/io.h +++ b/arch/ia64/include/asm/io.h @@ -393,6 +393,10 @@ __writeq (unsigned long val, volatile void __iomem *addr) #define writew(v,a) __writew((v), (a)) #define writel(v,a) __writel((v), (a)) #define writeq(v,a) __writeq((v), (a)) +#define writeb_relaxed(v,a) __writeb((v), (a)) +#define writew_relaxed(v,a) __writew((v), (a)) +#define writel_relaxed(v,a) __writel((v), (a)) +#define writeq_relaxed(v,a) __writeq((v), (a)) #define __raw_writeb writeb #define __raw_writew writew #define __raw_writel writel -- 1.9.2
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