ALSA: hda - fix NULL-dereference in patch_realtek
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>
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index c9f7715..4dd0ccc 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -4424,7 +4424,7 @@
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 =