diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index df91ea9243dfc5e48f398a1406db6c1c12a8311e..51e30740b2fefa43c940d63ab362b4aba7792b47 100644
--- a/drivers/usb/serial/option.c
+++ b/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,
diff --git a/drivers/usb/serial/usb-wwan.h b/drivers/usb/serial/usb-wwan.h
index aca45efbd6749a6c92c34e1fdf820b345def3f5b..dc379603c4b82b65beb8e5811b44a1e566199846 100644
--- a/drivers/usb/serial/usb-wwan.h
+++ b/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);
diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c
index 9aeaccfd4f7436fcbbc4a87815eec866d699b159..aa45985520f725e0a97740d2afcd32892c32fa5c 100644
--- a/drivers/usb/serial/usb_wwan.c
+++ b/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;