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

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commit 83b0c6ba99 upstream.

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>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: Weng Meiling <wengmeiling.weng@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
David Henningsson 2012-04-10 13:05:29 +02:00 committed by Greg Kroah-Hartman
parent 419f4dff0e
commit d3ecba4704
1 changed files with 3 additions and 1 deletions
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4
sound/pci/hda/patch_conexant.c
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@ -4430,7 +4430,9 @@ 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]);