firm_purge        165 drivers/usb/serial/whiteheat.c static int firm_purge(struct usb_serial_port *port, __u8 rxtx);
firm_purge        373 drivers/usb/serial/whiteheat.c 	retval = firm_purge(port, WHITEHEAT_PURGE_RX | WHITEHEAT_PURGE_TX);