ier = serial_in(port, UART_IER);
serial_out(port, UART_IER, 0);
ier = serial_in(port, UART_IER);
serial_out(port, UART_IER, 0);
length = min(strcspn(options, " "), sizeof(device->options));
strncpy(device->options, options, length);
} else {
length = min(strcspn(options, " "), sizeof(device->options));
strncpy(device->options, options, length);
} else {