USB: usb_wwan: remove unimplemented set_termios

The driver does not implement set_termios so the operation can be left
unset (tty will do the tty_termios_copy_hw for us).

Note that the send_setup call is bogus as it really only sets DTR/RTS
to their current values.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/serial/option.c

@@ -1729,7 +1729,6 @@ static struct usb_serial_driver option_1port_device = {
 	.write             = usb_wwan_write,
 	.write_room        = usb_wwan_write_room,
 	.chars_in_buffer   = usb_wwan_chars_in_buffer,
-	.set_termios       = usb_wwan_set_termios,
 	.tiocmget          = usb_wwan_tiocmget,
 	.tiocmset          = usb_wwan_tiocmset,
 	.ioctl             = usb_wwan_ioctl,

drivers/usb/serial/usb-wwan.h

@@ -11,9 +11,6 @@ extern void usb_wwan_close(struct usb_serial_port *port);
 extern int usb_wwan_port_probe(struct usb_serial_port *port);
 extern int usb_wwan_port_remove(struct usb_serial_port *port);
 extern int usb_wwan_write_room(struct tty_struct *tty);
-extern void usb_wwan_set_termios(struct tty_struct *tty,
-				 struct usb_serial_port *port,
-				 struct ktermios *old);
 extern int usb_wwan_tiocmget(struct tty_struct *tty);
 extern int usb_wwan_tiocmset(struct tty_struct *tty,
 			     unsigned int set, unsigned int clear);

drivers/usb/serial/usb_wwan.c

@@ -55,20 +55,6 @@ void usb_wwan_dtr_rts(struct usb_serial_port *port, int on)
 }
 EXPORT_SYMBOL(usb_wwan_dtr_rts);
 
-void usb_wwan_set_termios(struct tty_struct *tty,
-			  struct usb_serial_port *port,
-			  struct ktermios *old_termios)
-{
-	struct usb_wwan_intf_private *intfdata = port->serial->private;
-
-	/* Doesn't support option setting */
-	tty_termios_copy_hw(&tty->termios, old_termios);
-
-	if (intfdata->send_setup)
-		intfdata->send_setup(port);
-}
-EXPORT_SYMBOL(usb_wwan_set_termios);
-
 int usb_wwan_tiocmget(struct tty_struct *tty)
 {
 	struct usb_serial_port *port = tty->driver_data;