can: kvaser_usb: Add pointer to struct usb_interface into struct kvaser_usb

Add pointer to struct usb_interface into struct kvaser_usb.
Signed-off-by: Jimmy Assarsson <extja@kvaser.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

drivers/net/can/usb/kvaser_usb.c

@@ -414,6 +414,7 @@ struct kvaser_usb_tx_urb_context {
 
 struct kvaser_usb {
 	struct usb_device *udev;
+	struct usb_interface *intf;
 	struct kvaser_usb_net_priv *nets[MAX_NET_DEVICES];
 
 	struct usb_endpoint_descriptor *bulk_in, *bulk_out;
@@ -1962,6 +1963,8 @@ static int kvaser_usb_probe(struct usb_interface *intf,
 		return -ENODEV;
 	}
 
+	dev->intf = intf;
+
 	err = kvaser_usb_get_endpoints(intf, &dev->bulk_in, &dev->bulk_out);
 	if (err) {
 		dev_err(&intf->dev, "Cannot get usb endpoint(s)");