From: Michal Simek <michal.simek@xilinx.com>
Date: Thu, 7 Feb 2013 13:58:35 +0000 (+0100)
Subject: asm-generic: io: Fix ioread16/32be and iowrite16/32be
X-Git-Tag: v3.9-rc1~58^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=711e5b4520986380700e6f095608021cf087170e;p=platform%2Fupstream%2Fkernel-adaptation-pc.git

asm-generic: io: Fix ioread16/32be and iowrite16/32be

Fix ioreadXXbe and iowriteXXbe functions which did
additional little endian conversion on native big endian systems.
Using be_to_cpu (cpu_to_be) conversions with __raw_read/write
functions have resolved it.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
CC: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: Will Deacon <will.deacon@arm.com>
CC: linux-arch@vger.kernel.org
---

diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h
index 33bbbae..8823581 100644
--- a/include/asm-generic/io.h
+++ b/include/asm-generic/io.h
@@ -225,15 +225,15 @@ static inline void outsl(unsigned long addr, const void *buffer, int count)
 #ifndef CONFIG_GENERIC_IOMAP
 #define ioread8(addr)		readb(addr)
 #define ioread16(addr)		readw(addr)
-#define ioread16be(addr)	be16_to_cpu(ioread16(addr))
+#define ioread16be(addr)	__be16_to_cpu(__raw_readw(addr))
 #define ioread32(addr)		readl(addr)
-#define ioread32be(addr)	be32_to_cpu(ioread32(addr))
+#define ioread32be(addr)	__be32_to_cpu(__raw_readl(addr))
 
 #define iowrite8(v, addr)	writeb((v), (addr))
 #define iowrite16(v, addr)	writew((v), (addr))
-#define iowrite16be(v, addr)	iowrite16(be16_to_cpu(v), (addr))
+#define iowrite16be(v, addr)	__raw_writew(__cpu_to_be16(v), addr)
 #define iowrite32(v, addr)	writel((v), (addr))
-#define iowrite32be(v, addr)	iowrite32(be32_to_cpu(v), (addr))
+#define iowrite32be(v, addr)	__raw_writel(__cpu_to_be32(v), addr)
 
 #define ioread8_rep(p, dst, count) \
 	insb((unsigned long) (p), (dst), (count))