diff options
| author | Annie Li <jiayanli@google.com> | 2025-04-30 05:34:24 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-06-19 15:31:27 +0200 |
| commit | 57a52d74498c2b67d6378bbe5fca7039d20137d3 (patch) | |
| tree | 8fed68ca9e2c9c5818d23dfb74c8c80a2b73c1aa | |
| parent | 451a18d71bd979768de223d10b1921da4732f1c9 (diff) | |
x86/microcode/AMD: Do not return error when microcode update is not necessary
[ Upstream commit b43dc4ab097859c24e2a6993119c927cffc856aa ]
After
6f059e634dcd("x86/microcode: Clarify the late load logic"),
if the load is up-to-date, the AMD side returns UCODE_OK which leads to
load_late_locked() returning -EBADFD.
Handle UCODE_OK in the switch case to avoid this error.
[ bp: Massage commit message. ]
Fixes: 6f059e634dcd ("x86/microcode: Clarify the late load logic")
Signed-off-by: Annie Li <jiayanli@google.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/20250430053424.77438-1-jiayanli@google.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | arch/x86/kernel/cpu/microcode/core.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/microcode/core.c b/arch/x86/kernel/cpu/microcode/core.c index 079f046ee26d..e8021d3e5882 100644 --- a/arch/x86/kernel/cpu/microcode/core.c +++ b/arch/x86/kernel/cpu/microcode/core.c @@ -696,6 +696,8 @@ static int load_late_locked(void) return load_late_stop_cpus(true); case UCODE_NFOUND: return -ENOENT; + case UCODE_OK: + return 0; default: return -EBADFD; } |