ns8250_bus_flush
KOBJMETHOD(uart_flush, ns8250_bus_flush),
KOBJMETHOD(uart_flush, ns8250_bus_flush),
ns8250_bus_flush(sc, UART_FLUSH_RECEIVER|UART_FLUSH_TRANSMITTER);
int ns8250_bus_flush(struct uart_softc *, int);
KOBJMETHOD(uart_flush, ns8250_bus_flush),
KOBJMETHOD(uart_flush, ns8250_bus_flush),