From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dan Carpenter , David Henningsson , Takashi Iwai , Ben Hutchings , Weng Meiling Subject: [PATCH 3.4 124/214] ALSA: hda - Fix oops caused by recent commit "Fix internal mic for Lenovo Ideapad U300s" Date: Wed, 4 Jun 2014 21:18:07 -0700 Message-Id: <20140605041656.372911597@linuxfoundation.org> In-Reply-To: <20140605041639.638675216@linuxfoundation.org> References: <20140605041639.638675216@linuxfoundation.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.4-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 Cc: Weng Meiling Signed-off-by: Greg Kroah-Hartman --- sound/pci/hda/patch_conexant.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/sound/pci/hda/patch_conexant.c +++ b/sound/pci/hda/patch_conexant.c @@ -4430,7 +4430,9 @@ static void apply_fixup(struct hda_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]);