microblaze: Define read/write{b,w,l}_relaxed MMIO

More and more ARM specific drivers is using MMIO
readX/writeX_relaxed IO functions and Microblaze can
shared some drivers with ARM too.

This patch adds relaxed IO accessor macros
to prevent compilation failures.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/arch/microblaze/include/asm/io.h b/arch/microblaze/include/asm/io.h
index 2565cb94f32f..a2cea7206077 100644
--- a/arch/microblaze/include/asm/io.h
+++ b/arch/microblaze/include/asm/io.h
@@ -342,4 +342,12 @@ static inline void outsl(unsigned long addr, const void *buffer, int count)
 #define iowrite32_rep(p, src, count) \
         outsl((unsigned long) (p), (src), (count))
 
+#define readb_relaxed   readb
+#define readw_relaxed   readw
+#define readl_relaxed   readl
+
+#define writeb_relaxed  writeb
+#define writew_relaxed  writew
+#define writel_relaxed  writel
+
 #endif /* _ASM_MICROBLAZE_IO_H */