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[PATCH] Consolidate check_signature

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There's nothing arch-specific about check_signature(), so move it to
<linux/io.h>.  Use a cross between the Alpha and i386 implementations as
the generic one.

Signed-off-by: Matthew Wilcox <[email protected]>
Acked-by: Alan Cox <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Matthew Wilcox 2006-10-11 01:22:02 -07:00 • committed by Linus Torvalds
commit e50190a834
13 changed files with 27 additions and 252 deletions
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16
include/asm-sh/io.h
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@ -304,22 +304,6 @@ __ioremap_mode(unsigned long offset, unsigned long size, unsigned long flags)
#define iounmap(addr) \
__iounmap((addr))
static inline int check_signature(char __iomem *io_addr,
const unsigned char *signature, int length)
{
int retval = 0;
do {
if (readb(io_addr) != *signature)
goto out;
io_addr++;
signature++;
length--;
} while (length);
retval = 1;
out:
return retval;
}
/*
* The caches on some architectures aren't dma-coherent and have need to
* handle this in software. There are three types of operations that