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ALSA: hda - fix NULL-dereference in patch_realtek

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Fix NULL-dereference when try to use alt_playback since those codecs
which support multistreaming playback usually have more than 1 adc but
the driver should create alt_capture when spec->stream_analog_alt_capture
is also defined.

Signed-off-by: Raymond Yau <superquad.vortex2@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Raymond Yau 2011-05-03 13:33:53 +08:00 committed by Takashi Iwai
parent 20ec8b2463
commit ce85c9ac8d
1 changed files with 1 additions and 1 deletions
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2
sound/pci/hda/patch_realtek.c
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@ -4424,7 +4424,7 @@ static int alc_build_pcms(struct hda_codec *codec)
alc_pcm_null_stream;
info->stream[SNDRV_PCM_STREAM_PLAYBACK].nid = 0;
}
if (spec->num_adc_nids > 1) {
if (spec->num_adc_nids > 1 && spec->stream_analog_alt_capture) {
info->stream[SNDRV_PCM_STREAM_CAPTURE] =
*spec->stream_analog_alt_capture;
info->stream[SNDRV_PCM_STREAM_CAPTURE].nid =