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ALSA: hda - Fix possible NULL dereference in snd_hda_get_pin_label() 

Fix a possible NULL access of indexp in fill_audio_out_name() called
from snd_hda_get_pin_label().

Spotted by coverity CID 402035.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2013-10-28 11:39:23 +01:00
parent 9b389a8a02
commit 728deecdd4
1 changed files with 1 additions and 1 deletions
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2
sound/pci/hda/hda_auto_parser.c
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@ -638,7 +638,7 @@ static int fill_audio_out_name(struct hda_codec *codec, hda_nid_t nid,
/* don't add channel suffix for Headphone controls */
int idx = get_hp_label_index(codec, nid, cfg->hp_pins,
cfg->hp_outs);
if (idx >= 0)
if (idx >= 0 && indexp)
*indexp = idx;
sfx = "";
}