/* qt2_boxunsetsw_flowctl - Turn software (XON/XOFF) flow control off for a hardware UART.  */
static int qt2_boxunsetsw_flowctl(struct usb_serial *serial, __u16 UartNumber)
/* qt2_boxunsetsw_flowctl - Turn software (XON/XOFF) flow control off for a hardware UART.  */
static int qt2_boxunsetsw_flowctl(struct usb_serial *serial, __u16 UartNumber)
{
	return usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
			QT2_SW_FLOW_CONTROL_DISABLE, 0x40, 0, UartNumber, NULL,
			0, 300);
}