The following commit has been merged into the x86/microcode branch of tip:
Commit-ID: c0a62eadb6fd158e4d6d4d47d806109e7ae32e8b
Gitweb: https://git.kernel.org/tip/c0a62eadb6fd158e4d6d4d47d806109e7ae32e8b
Author: Eric Biggers <ebiggers@google.com>
AuthorDate: Mon, 28 Apr 2025 11:30:06 -07:00
Committer: Borislav Petkov (AMD) <bp@alien8.de>
CommitterDate: Mon, 28 Apr 2025 21:03:58 +02:00
x86/microcode/AMD: Use sha256() instead of init/update/final
Just call sha256() instead of doing the init/update/final sequence.
No functional changes.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/20250428183006.782501-1-ebiggers@kernel.org
---
arch/x86/kernel/cpu/microcode/amd.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/arch/x86/kernel/cpu/microcode/amd.c b/arch/x86/kernel/cpu/microcode/amd.c
index 57bd61f..b2bbfc4 100644
--- a/arch/x86/kernel/cpu/microcode/amd.c
+++ b/arch/x86/kernel/cpu/microcode/amd.c
@@ -211,7 +211,6 @@ static bool verify_sha256_digest(u32 patch_id, u32 cur_rev, const u8 *data, unsi
{
struct patch_digest *pd = NULL;
u8 digest[SHA256_DIGEST_SIZE];
- struct sha256_state s;
int i;
if (x86_family(bsp_cpuid_1_eax) < 0x17 ||
@@ -230,9 +229,7 @@ static bool verify_sha256_digest(u32 patch_id, u32 cur_rev, const u8 *data, unsi
return false;
}
- sha256_init(&s);
- sha256_update(&s, data, len);
- sha256_final(&s, digest);
+ sha256(data, len, digest);
if (memcmp(digest, pd->sha256, sizeof(digest))) {
pr_err("Patch 0x%x SHA256 digest mismatch!\n", patch_id);