diff options
| author |   Andreas Herrmann <andreas.herrmann3@amd.com> | 2012-04-12 16:51:57 +0200 |
|---|---|---|
| committer |   Borislav Petkov <borislav.petkov@amd.com> | 2012-04-13 11:51:05 +0200 |
| commit | 283c1f2558ef4a4411fe908364b15b73b6ab44cf (patch) | |
| tree | cc5f5fa3ea2194aa106ebfac0618e77aff639590 /arch/x86/kernel/microcode_core.c | |
| parent | x86, microcode: Fix sysfs warning during module unload on unsupported CPUs (diff) | |
| download | linux-dev-283c1f2558ef4a4411fe908364b15b73b6ab44cf.tar.xz linux-dev-283c1f2558ef4a4411fe908364b15b73b6ab44cf.zip | |
x86, microcode: Ensure that module is only loaded on supported AMD CPUs
Exit early when there's no support for a particular CPU family. Also,
fixup the "no support for this CPU vendor" to be issued only when the
driver is attempted to be loaded on an unsupported vendor.
Cc: stable@vger.kernel.org
Cc: Tigran Aivazian <tigran@aivazian.fsnet.co.uk>
Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: http://lkml.kernel.org/r/20120411163849.GE4794@alberich.amd.com
[Boris: add a commit msg because Andreas is lazy]
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Diffstat (limited to 'arch/x86/kernel/microcode_core.c')
| -rw-r--r-- | arch/x86/kernel/microcode_core.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/kernel/microcode_core.c b/arch/x86/kernel/microcode_core.c index d389e74342a3..c9bda6d6035c 100644 --- a/arch/x86/kernel/microcode_core.c +++ b/arch/x86/kernel/microcode_core.c @@ -526,11 +526,11 @@ static int __init microcode_init(void) microcode_ops = init_intel_microcode(); else if (c->x86_vendor == X86_VENDOR_AMD) microcode_ops = init_amd_microcode(); - - if (!microcode_ops) { + else pr_err("no support for this CPU vendor\n"); + + if (!microcode_ops) return -ENODEV; - } microcode_pdev = platform_device_register_simple("microcode", -1, NULL, 0); |