static void vc_port_destruct(struct tty_port *port)
{
	struct vc_data *vc = container_of(port, struct vc_data, port);

	kfree(vc);
}
static void vc_port_destruct(struct tty_port *port)
{
	struct vc_data *vc = container_of(port, struct vc_data, port);

	kfree(vc);
}