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| author | Will Deacon <will.deacon@arm.com> | 2012-12-17 15:59:42 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-12-17 17:15:13 -0800 |
| commit | 41739ee355abc39d36bde6feed32ad16c63ceea2 (patch) | |
| tree | 9eec892c34b20a129a024fa3530e92ec7f8f7ace /include | |
| parent | da01ee3c8e7954fb7ed0ceb002d482c79f8b2ccd (diff) | |
| download | lwn-41739ee355abc39d36bde6feed32ad16c63ceea2.tar.gz lwn-41739ee355abc39d36bde6feed32ad16c63ceea2.zip | |
asm-generic: io: don't perform swab during {in,out} string functions
The {in,out}s{b,w,l} functions are designed to operate on a stream of
bytes and therefore should not perform any byte-swapping, regardless of
the CPU byte order.
This patch fixes the generic IO header so that {in,out}s{b,w,l} call the
__raw_{read,write} functions directly rather than going via the
endian-correcting accessors.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Cc: Mike Frysinger <vapier@gentoo.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Ben Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-generic/io.h | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h index 9e0ebe051243..d1e93284d72a 100644 --- a/include/asm-generic/io.h +++ b/include/asm-generic/io.h @@ -154,7 +154,7 @@ static inline void insb(unsigned long addr, void *buffer, int count) if (count) { u8 *buf = buffer; do { - u8 x = inb(addr); + u8 x = __raw_readb(addr + PCI_IOBASE); *buf++ = x; } while (--count); } @@ -167,7 +167,7 @@ static inline void insw(unsigned long addr, void *buffer, int count) if (count) { u16 *buf = buffer; do { - u16 x = inw(addr); + u16 x = __raw_readw(addr + PCI_IOBASE); *buf++ = x; } while (--count); } @@ -180,7 +180,7 @@ static inline void insl(unsigned long addr, void *buffer, int count) if (count) { u32 *buf = buffer; do { - u32 x = inl(addr); + u32 x = __raw_readl(addr + PCI_IOBASE); *buf++ = x; } while (--count); } @@ -193,7 +193,7 @@ static inline void outsb(unsigned long addr, const void *buffer, int count) if (count) { const u8 *buf = buffer; do { - outb(*buf++, addr); + __raw_writeb(*buf++, addr + PCI_IOBASE); } while (--count); } } @@ -205,7 +205,7 @@ static inline void outsw(unsigned long addr, const void *buffer, int count) if (count) { const u16 *buf = buffer; do { - outw(*buf++, addr); + __raw_writew(*buf++, addr + PCI_IOBASE); } while (--count); } } @@ -217,7 +217,7 @@ static inline void outsl(unsigned long addr, const void *buffer, int count) if (count) { const u32 *buf = buffer; do { - outl(*buf++, addr); + __raw_writel(*buf++, addr + PCI_IOBASE); } while (--count); } } |