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[v3,10/17] mn10300: io: implement dummy relaxed accessor macros for writes

Message ID 1411579056-16966-11-git-send-email-will.deacon@arm.com
State Accepted
Commit 960a5597c39109ed2e12964cd9dc34857e5afee2
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 mn10300, 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/mn10300/include/asm/io.h | 4 ++++
 1 file changed, 4 insertions(+)
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Patch

diff --git a/arch/mn10300/include/asm/io.h b/arch/mn10300/include/asm/io.h
index e6ed0d897ccc..897ba3c12b32 100644
--- a/arch/mn10300/include/asm/io.h
+++ b/arch/mn10300/include/asm/io.h
@@ -67,6 +67,10 @@  static inline void writel(u32 b, volatile void __iomem *addr)
 #define __raw_writew writew
 #define __raw_writel writel
 
+#define writeb_relaxed writeb
+#define writew_relaxed writew
+#define writel_relaxed writel
+
 /*****************************************************************************/
 /*
  * traditional input/output functions