uart_tty_open
.tsw_open = uart_tty_open,
static tsw_open_t uart_tty_open;
int uart_tty_open(struct uart_softc *sc, const char *path,
return (uart_tty_open(sc->backend, device, uart_drain, sc));
return (uart_tty_open(sc->backend, device, uart_drain, sc));