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[PATCH] i386: romsignature/checksum cleanup

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Use adding __init to romsignature() (it's only called from probe_roms()
which is itself __init) as an excuse to submit a pedantic cleanup.

Signed-off-by: Rene Herman <rene.herman@gmail.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
This commit is contained in:
Rene Herman 2007-02-13 13:26:22 +01:00 • committed by Andi Kleen
parent f9690982b8
commit 3b3d5e1db6
1 changed files with 9 additions and 8 deletions
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17
arch/i386/kernel/e820.c
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@ -157,21 +157,22 @@ static struct resource standard_io_resources[] = { {
.flags = IORESOURCE_BUSY | IORESOURCE_IO
} };
static int romsignature(const unsigned char *x)
#define ROMSIGNATURE 0xaa55
static int __init romsignature(const unsigned char *rom)
{
unsigned short sig;
int ret = 0;
if (probe_kernel_address((const unsigned short *)x, sig) == 0)
ret = (sig == 0xaa55);
return ret;
return probe_kernel_address((const unsigned short *)rom, sig) == 0 &&
sig == ROMSIGNATURE;
}
static int __init romchecksum(unsigned char *rom, unsigned long length)
{
unsigned char *p, sum = 0;
unsigned char sum;
for (p = rom; p < rom + length; p++)
sum += *p;
for (sum = 0; length; length--)
sum += *rom++;
return sum == 0;
}