From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-Id: <20121028231538.953434444@decadent.org.uk> Date: Sun, 28 Oct 2012 23:15:42 +0000 From: Ben Hutchings To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, David Henningsson , Dan Carpenter , Takashi Iwai Subject: [ 006/105] ALSA: hda - Fix oops caused by recent commit "Fix internal mic for Lenovo Ideapad U300s" In-Reply-To: <20121028231536.970033833@decadent.org.uk> Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.2-stable review patch. If anyone has any objections, please let me know. ------------------ From: David Henningsson commit 83b0c6ba999643ee8ad6329f26e1cdc870e1a920 upstream. Make sure we don't dereference the "quirk" pointer when it is null. Reported-by: Dan Carpenter Signed-off-by: David Henningsson Signed-off-by: Takashi Iwai Signed-off-by: Ben Hutchings --- sound/pci/hda/patch_conexant.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c index cbe115b..abb59f4 100644 --- a/sound/pci/hda/patch_conexant.c +++ b/sound/pci/hda/patch_conexant.c @@ -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]);