From cfc7c9d307b6a3557e333f960218d344d3a70ce7 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Fri, 11 Nov 2011 17:53:03 +0100 Subject: [PATCH] ALSA: hda/jack - Fix NULL-dereference at probing At probing time, the elements that aren't assigned to kctl or jack may be called. Need proper NULL-checks. Signed-off-by: Takashi Iwai --- sound/pci/hda/hda_jack.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/sound/pci/hda/hda_jack.c b/sound/pci/hda/hda_jack.c index eac002d..ef36cbb9 100644 --- a/sound/pci/hda/hda_jack.c +++ b/sound/pci/hda/hda_jack.c @@ -194,6 +194,8 @@ void snd_hda_jack_report_sync(struct hda_codec *codec) for (i = 0; i < codec->jacktbl.used; i++, jack++) if (jack->nid) { jack_detect_update(codec, jack); + if (!jack->kctl) + continue; state = get_jack_plug_state(jack->pin_sense); snd_kctl_jack_report(codec->bus->card, jack->kctl, state); } @@ -356,7 +358,7 @@ void snd_hda_input_jack_report(struct hda_codec *codec, hda_nid_t nid) unsigned int present; int type; - if (!jack) + if (!jack || !jack->jack) return; present = snd_hda_jack_detect(codec, nid); -- 2.7.4