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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>
This commit is contained in:
Will Deacon 2012-12-17 15:59:42 -08:00 committed by Linus Torvalds
parent da01ee3c8e
commit 41739ee355
1 changed files with 6 additions and 6 deletions
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12
include/asm-generic/io.h
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@ -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);
}
}