static void mpsc_release_port(struct uart_port *port);
mpsc_shutdown(struct uart_port *port){	struct mpsc_port_info *pi = (struct mpsc_port_info *)port;	static void mpsc_release_port(struct uart_port *port);	pr_debug("mpsc_shutdown[%d]: Shutting down MPSC\n", port->line);	mpsc_sdma_stop(pi);	free_irq(pi->port.irq, pi);	return;}