From d982057f631df04f8d78321084a1a71ca51f3364 Mon Sep 17 00:00:00 2001 From: Torsten Kaiser Date: Tue, 23 Jul 2013 22:58:23 +0200 Subject: [PATCH] x86, amd, microcode: Fix error path in apply_microcode_amd() Return -1 (like Intels apply_microcode) when the loading fails, also do not set the active microcode level on failure. Signed-off-by: Torsten Kaiser Link: http://lkml.kernel.org/r/20130723225823.2e4e7588@googlemail.com Acked-by: Borislav Petkov Signed-off-by: H. Peter Anvin --- arch/x86/kernel/microcode_amd.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/arch/x86/kernel/microcode_amd.c b/arch/x86/kernel/microcode_amd.c index 47ebb1dbfbcb..7a0adb7ee433 100644 --- a/arch/x86/kernel/microcode_amd.c +++ b/arch/x86/kernel/microcode_amd.c @@ -220,12 +220,13 @@ int apply_microcode_amd(int cpu) return 0; } - if (__apply_microcode_amd(mc_amd)) + if (__apply_microcode_amd(mc_amd)) { pr_err("CPU%d: update failed for patch_level=0x%08x\n", cpu, mc_amd->hdr.patch_id); - else - pr_info("CPU%d: new patch_level=0x%08x\n", cpu, - mc_amd->hdr.patch_id); + return -1; + } + pr_info("CPU%d: new patch_level=0x%08x\n", cpu, + mc_amd->hdr.patch_id); uci->cpu_sig.rev = mc_amd->hdr.patch_id; c->microcode = mc_amd->hdr.patch_id; -- GitLab