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authorRene Herman <rene.herman@gmail.com>2007-02-13 13:26:22 +0100
committerAndi Kleen <andi@basil.nowhere.org>2007-02-13 13:26:22 +0100
commit3b3d5e1db66cd66148b2cebd2c38aff2a8df03d6 (patch)
tree7ab27ca17776ee5a558572ac4d52b593527452e1 /arch/i386/kernel/e820.c
parentf9690982b8c2f9a2c65acdc113e758ec356676a3 (diff)
[PATCH] i386: romsignature/checksum cleanup
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>
Diffstat (limited to 'arch/i386/kernel/e820.c')
-rw-r--r--arch/i386/kernel/e820.c17
1 files changed, 9 insertions, 8 deletions
diff --git a/arch/i386/kernel/e820.c b/arch/i386/kernel/e820.c
index 9ded1e49119..70f39560846 100644
--- a/arch/i386/kernel/e820.c
+++ b/arch/i386/kernel/e820.c
@@ -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;
}