SNDRV_CHMAP_UNKNOWN  317 sound/usb/stream.c 		chmap->map[c] = SNDRV_CHMAP_UNKNOWN;
SNDRV_CHMAP_UNKNOWN  450 sound/usb/stream.c 				map = SNDRV_CHMAP_UNKNOWN;
SNDRV_CHMAP_UNKNOWN  464 sound/usb/stream.c 		chmap->map[c] = SNDRV_CHMAP_UNKNOWN;