struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data; 
struct usb_serial_port *port = tty->driver_data; 
static int serial_tiocmset (struct tty_struct *tty, struct file *file,			    unsigned int set, unsigned int clear){	struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data;	dbg("%s - port %d", __FUNCTION__, port->number);	if (!port->open_count) {		dbg("%s - port not open", __FUNCTION__);		goto exit;	}	if (port->serial->type->tiocmset)		return port->serial->type->tiocmset(port, file, set, clear);exit:	return -EINVAL;}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/81671ddb7e24e9d1f84812dba8ed810935f77d40/usb-serial.c/buggy/drivers/usb/serial/usb-serial.c