libertas: switch USB cardp->priv to 'struct lbs_private *' and resulting fix

Amazing what interesting things the compiler will tell you if you let it
know what types you expect to be passing around.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/libertas/if_usb.c

@@ -1003,7 +1003,7 @@ static int if_usb_resume(struct usb_interface *intf)
 
 	cardp->rx_urb_recall = 0;
 
-	if_usb_submit_rx_urb(cardp->priv);
+	if_usb_submit_rx_urb(cardp);
 
 	netif_device_attach(cardp->eth_dev);
 	netif_device_attach(priv->mesh_dev);

drivers/net/wireless/libertas/if_usb.h

@@ -4,6 +4,8 @@
 #include <linux/wait.h>
 #include <linux/timer.h>
 
+struct lbs_private;
+
 /**
   * This file contains definition for USB interface.
   */
@@ -48,7 +50,7 @@ struct usb_card_rec {
 	struct net_device *eth_dev;
 	struct usb_device *udev;
 	struct urb *rx_urb, *tx_urb;
-	void *priv;
+	struct lbs_private *priv;
 	struct read_cb_info rinfo;
 
 	int bulk_in_size;