CDROMSUBCHNL      256 block/compat_ioctl.c 	case CDROMSUBCHNL:
CDROMSUBCHNL     2631 drivers/cdrom/cdrom.c 	ret = cdi->ops->audio_ioctl(cdi, CDROMSUBCHNL, &q);
CDROMSUBCHNL     3296 drivers/cdrom/cdrom.c 	case CDROMSUBCHNL:
CDROMSUBCHNL     3397 drivers/cdrom/cdrom.c 	case CDROMSUBCHNL: