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ALSA: hda - Fix oops caused by recent commit "Fix internal mic for Lenovo Ideapad U300s"

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Make sure we don't dereference the "quirk" pointer when it is null.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
David Henningsson 2012-04-10 13:05:29 +02:00 committed by Takashi Iwai
parent 5ff5c3a4ab
commit 83b0c6ba99
1 changed files with 3 additions and 1 deletions
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4
sound/pci/hda/patch_conexant.c
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@ -4441,7 +4441,9 @@ static void apply_fixup(struct hda_codec *codec,
struct conexant_spec *spec = codec->spec;
quirk = snd_pci_quirk_lookup(codec->bus->pci, quirk);
if (quirk && table[quirk->value]) {
if (!quirk)
return;
if (table[quirk->value]) {
snd_printdd(KERN_INFO "hda_codec: applying pincfg for %s\n",
quirk->name);
apply_pincfg(codec, table[quirk->value]);