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| author | Jiri Kosina <jkosina@suse.cz> | 2010-08-10 15:22:08 +0400 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2010-08-10 15:22:08 +0400 |
| commit | fb8231a8b139035476f2a8aaac837d0099b66dad (patch) | |
| tree | 2875806beb96ea0cdab292146767a5085721dc6a /arch/blackfin/include/asm/io.h | |
| parent | 426d31071ac476ea62c62656b242930c17b58c00 (diff) | |
| parent | f6cec0ae58c17522a7bc4e2f39dae19f199ab534 (diff) | |
| download | linux-fb8231a8b139035476f2a8aaac837d0099b66dad.tar.xz | |
Merge branch 'master' into for-next
Conflicts:
arch/arm/mach-omap1/board-nokia770.c
Diffstat (limited to 'arch/blackfin/include/asm/io.h')
| -rw-r--r-- | arch/blackfin/include/asm/io.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/blackfin/include/asm/io.h b/arch/blackfin/include/asm/io.h index 29e55b9d88bc..234fbac17ec1 100644 --- a/arch/blackfin/include/asm/io.h +++ b/arch/blackfin/include/asm/io.h @@ -124,7 +124,13 @@ static inline unsigned int readl(const volatile void __iomem *addr) #define iowrite16(val, x) writew(val, x) #define iowrite32(val, x) writel(val, x) -#define mmiowb() wmb() +/** + * I/O write barrier + * + * Ensure ordering of I/O space writes. This will make sure that writes + * following the barrier will arrive after all previous writes. + */ +#define mmiowb() do { SSYNC(); wmb(); } while (0) #define IO_SPACE_LIMIT 0xffffffff |