[ALSA] Fix and cleanup of CM9880 auto-configuration
HDA Codec driver
Fix and cleanup of CM9880 automatic PIN configuration.
snd_hda_codec_setup_stream() doesn't do anything when NID is 0.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 890b756..44fac21 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -549,6 +549,9 @@
void snd_hda_codec_setup_stream(struct hda_codec *codec, hda_nid_t nid, u32 stream_tag,
int channel_id, int format)
{
+ if (! nid)
+ return;
+
snd_printdd("hda_codec_setup_stream: NID=0x%x, stream=0x%x, channel=%d, format=0x%x\n",
nid, stream_tag, channel_id, format);
snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_CHANNEL_STREAMID,