USB: sierra: remove redundant modem-control requests

The tty-port implementation has already made sure that DTR/RTS have been
raised and lowered by calling dtr_rts so remove the redundant calls from
open and close.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/serial/sierra.c

@@ -769,14 +769,7 @@ static void sierra_close(struct usb_serial_port *port)
 
 	portdata = usb_get_serial_port_data(port);
 
-	portdata->rts_state = 0;
-	portdata->dtr_state = 0;
-
-	/* odd error handling due to pm counters */
-	if (!usb_autopm_get_interface(serial->interface))
-		sierra_send_setup(port);
-	else
-		usb_autopm_get_interface_no_resume(serial->interface);
+	usb_autopm_get_interface_no_resume(serial->interface);
 
 	spin_lock_irq(&intfdata->susp_lock);
 	portdata->opened = 0;
@@ -817,11 +810,6 @@ static int sierra_open(struct tty_struct *tty, struct usb_serial_port *port)
 
 	portdata = usb_get_serial_port_data(port);
 
-	/* Set some sane defaults */
-	portdata->rts_state = 1;
-	portdata->dtr_state = 1;
-
-
 	endpoint = port->bulk_in_endpointAddress;
 	for (i = 0; i < portdata->num_in_urbs; i++) {
 		urb = sierra_setup_urb(serial, endpoint, USB_DIR_IN, port,
@@ -837,8 +825,6 @@ static int sierra_open(struct tty_struct *tty, struct usb_serial_port *port)
 	if (err)
 		goto err_submit;
 
-	sierra_send_setup(port);
-
 	spin_lock_irq(&intfdata->susp_lock);
 	portdata->opened = 1;
 	if (++intfdata->open_ports == 1)