case DVD_READ_STRUCT: {
		dvd_struct *s;
		int size = sizeof(dvd_struct);
-		if (!CDROM_CAN(CDC_DVD))
-			return -ENOSYS;
		if ((s = (dvd_struct *) kmalloc(size, GFP_KERNEL)) == NULL)
			return -ENOMEM;
		cdinfo(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n"); 
----
	case DVD_AUTH: {
		dvd_authinfo ai;
-		if (!CDROM_CAN(CDC_DVD))
-			return -ENOSYS;
		cdinfo(CD_DO_IOCTL, "entering DVD_AUTH\n"); 
		IOCTL_IN(arg, dvd_authinfo, ai);