From 3b3d5e1db66cd66148b2cebd2c38aff2a8df03d6 Mon Sep 17 00:00:00 2001 From: Rene Herman Date: Tue, 13 Feb 2007 13:26:22 +0100 Subject: [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 Signed-off-by: Andi Kleen Cc: Andi Kleen Signed-off-by: Andrew Morton --- arch/i386/kernel/e820.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) (limited to 'arch/i386/kernel/e820.c') 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; } -- cgit v1.2.3