diff options
| author | Borislav Petkov (AMD) <bp@alien8.de> | 2024-07-30 09:52:43 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-03-07 16:45:57 +0100 |
| commit | 98a44622be2f193dc31bc542948407cac2bed9dc (patch) | |
| tree | fbe90c51be5598d66e709135f1381443943a8a14 | |
| parent | a4921b76bc9421d3838e167f6a17ea3112d8fe62 (diff) | |
x86/microcode/AMD: Fix a -Wsometimes-uninitialized clang false positive
commit 5343558a868e7e635b40baa2e46bf53df1a2d131 upstream.
Initialize equiv_id in order to shut up:
arch/x86/kernel/cpu/microcode/amd.c:714:6: warning: variable 'equiv_id' is \
used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
if (x86_family(bsp_cpuid_1_eax) < 0x17) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
because clang doesn't do interprocedural analysis for warnings to see
that this variable won't be used uninitialized.
Fixes: 94838d230a6c ("x86/microcode/AMD: Use the family,model,stepping encoded in the patch ID")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202407291815.gJBST0P3-lkp@intel.com/
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | arch/x86/kernel/cpu/microcode/amd.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/cpu/microcode/amd.c b/arch/x86/kernel/cpu/microcode/amd.c index 9eb9c0681f6f..13a632da09ed 100644 --- a/arch/x86/kernel/cpu/microcode/amd.c +++ b/arch/x86/kernel/cpu/microcode/amd.c @@ -813,7 +813,7 @@ static void free_cache(void) static struct ucode_patch *find_patch(unsigned int cpu) { struct ucode_cpu_info *uci = ucode_cpu_info + cpu; - u16 equiv_id; + u16 equiv_id = 0; uci->cpu_sig.rev = get_patch_level(); |