NB_STREAM_PLAYBACK   95 sound/pci/aw2/aw2-alsa.c 	struct aw2_pcm_device device_playback[NB_STREAM_PLAYBACK];
NB_STREAM_PLAYBACK   32 sound/pci/aw2/aw2-saa7146.c  arr_substream_it_playback_cb[NB_STREAM_PLAYBACK];
NB_STREAM_PLAYBACK  250 sound/pci/aw2/aw2-saa7146.c 	if (stream_number < NB_STREAM_PLAYBACK) {