[PATCH v2 01/10] asm-generic: io: don't perform swab during {in,out} string functions
From: Will Deacon <hidden>
Date: 2012-12-10 19:14:16
Also in:
lkml
Subsystem:
generic include/asm header files, the rest · Maintainers:
Arnd Bergmann, Linus Torvalds
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.
Cc: Mike Frysinger <redacted>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Ben Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Will Deacon <redacted>
---
include/asm-generic/io.h | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h
index 448303b..b2600f3 100644
--- a/include/asm-generic/io.h
+++ b/include/asm-generic/io.h@@ -148,7 +148,7 @@ 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); }
@@ -161,7 +161,7 @@ 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); }
@@ -174,7 +174,7 @@ 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); }
@@ -187,7 +187,7 @@ 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); } }
@@ -199,7 +199,7 @@ 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); } }
@@ -211,7 +211,7 @@ 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); } }
--
1.8.0