serial8250_clear_and_reinit_fifos
void serial8250_clear_and_reinit_fifos(struct uart_8250_port *p);
serial8250_clear_and_reinit_fifos(up);
serial8250_clear_and_reinit_fifos(up);
serial8250_clear_and_reinit_fifos(p);
EXPORT_SYMBOL_GPL(serial8250_clear_and_reinit_fifos);