Add a disconnect function to the functions of this device.  The
disconnect is a call to usb_serial_generic_disconnect() so it requires
that symbol to be exported from generic.c.
Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
        tty_kref_put(tty);
 }
 
-
 static struct usb_serial_driver ssu100_device = {
        .driver = {
                .owner = THIS_MODULE,
        .tiocmset            = ssu100_tiocmset,
        .ioctl               = ssu100_ioctl,
        .set_termios         = ssu100_set_termios,
+       .disconnect          = usb_serial_generic_disconnect,
 };
 
 static int __init ssu100_init(void)