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authorBorislav Petkov <borislav.petkov@amd.com>2011-02-22 18:41:48 +0100
committerBorislav Petkov <borislav.petkov@amd.com>2011-06-15 15:13:49 +0200
commit86b445676d13f520ef9ab7aebe933aa6684ce84c (patch)
tree2ddc317f83becf24330065bf0b3468a2b6bee2e7 /arch/x86/kernel/microcode_amd.c
parent2c53b436a30867eb6b47dd7bab23ba638d1fb0d2 (diff)
downloadlinux-linaro-stable-86b445676d13f520ef9ab7aebe933aa6684ce84c.tar.gz
x86, microcode, AMD: Correct buf references
Both the equivalence table and the microcode patch types are u32. Access them properly through the buf-ptr. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Diffstat (limited to 'arch/x86/kernel/microcode_amd.c')
-rw-r--r--arch/x86/kernel/microcode_amd.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/kernel/microcode_amd.c b/arch/x86/kernel/microcode_amd.c
index c5610384ab16..d30d67cd33ad 100644
--- a/arch/x86/kernel/microcode_amd.c
+++ b/arch/x86/kernel/microcode_amd.c
@@ -157,7 +157,7 @@ static int apply_microcode_amd(int cpu)
static unsigned int verify_ucode_size(int cpu, const u8 *buf, unsigned int size)
{
struct cpuinfo_x86 *c = &cpu_data(cpu);
- unsigned int max_size, actual_size;
+ u32 max_size, actual_size;
#define F1XH_MPB_MAX_SIZE 2048
#define F14H_MPB_MAX_SIZE 1824
@@ -175,7 +175,7 @@ static unsigned int verify_ucode_size(int cpu, const u8 *buf, unsigned int size)
break;
}
- actual_size = buf[4] + (buf[5] << 8);
+ actual_size = *(u32 *)(buf + 4);
if (actual_size > size || actual_size > max_size) {
pr_err("section size mismatch\n");
@@ -191,7 +191,7 @@ get_next_ucode(int cpu, const u8 *buf, unsigned int size, unsigned int *mc_size)
struct microcode_header_amd *mc = NULL;
unsigned int actual_size = 0;
- if (buf[0] != UCODE_UCODE_TYPE) {
+ if (*(u32 *)buf != UCODE_UCODE_TYPE) {
pr_err("invalid type field in container file section header\n");
goto out;
}