if (mtd_info->priv) vfree(mtd_info->priv);
vfree(mtd_info->priv);
static void __exit cleanup_mtdram(void){	if (mtd_info) {		del_mtd_device(mtd_info);		if (mtd_info->priv)			vfree(mtd_info->priv);		kfree(mtd_info);	}}