if (! nid) return;  
void snd_hda_codec_setup_stream(struct hda_codec *codec, hda_nid_t nid, u32 stream_tag,				int channel_id, int format){	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,			    (stream_tag << 4) | channel_id);	msleep(1);	snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_STREAM_FORMAT, format);}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/d21b37ea134921f807ebdbd19ae3cd00bb8bf2fc/hda_codec.c/clean/sound/pci/hda/hda_codec.c