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[v3,05/17] frv: io: implement dummy relaxed accessor macros for writes

Message ID 1411579056-16966-6-git-send-email-will.deacon@arm.com
State Accepted
Commit 88a681698008515103e9a5afad229e25510c1e43
Headers show

Commit Message

Will Deacon Sept. 24, 2014, 5:17 p.m. UTC 
write{b,w,l}_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 frv, in the same
vein as the dummy definitions for the relaxed read accessors.

Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
---
 arch/frv/include/asm/io.h | 3 +++
 1 file changed, 3 insertions(+)
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Patch

diff --git a/arch/frv/include/asm/io.h b/arch/frv/include/asm/io.h
index 8cb50a2fbcb2..99bb7efaf9b7 100644
--- a/arch/frv/include/asm/io.h
+++ b/arch/frv/include/asm/io.h
@@ -243,6 +243,9 @@  static inline void writel(uint32_t datum, volatile void __iomem *addr)
 		__flush_PCI_writes();
 }
 
+#define writeb_relaxed writeb
+#define writew_relaxed writew
+#define writel_relaxed writel
 
 /* Values for nocacheflag and cmode */
 #define IOMAP_FULL_CACHING		0