libertas: when usb_submit_usb fails, include the error code in the printk

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/libertas/if_usb.c b/drivers/net/wireless/libertas/if_usb.c
index d5fc7d7..e9190a6 100644
--- a/drivers/net/wireless/libertas/if_usb.c
+++ b/drivers/net/wireless/libertas/if_usb.c
@@ -424,7 +424,7 @@
 
 	if ((ret = usb_submit_urb(cardp->tx_urb, GFP_ATOMIC))) {
 		/*  transfer failed */
-		lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb failed\n");
+		lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb failed: %d\n", ret);
 		ret = -1;
 	} else {
 		/* lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb success\n"); */
@@ -462,7 +462,7 @@
 	/* lbs_deb_usbd(&cardp->udev->dev, "Pointer for rx_urb %p\n", cardp->rx_urb); */
 	if ((ret = usb_submit_urb(cardp->rx_urb, GFP_ATOMIC))) {
 		/* handle failure conditions */
-		lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB failed\n");
+		lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB failed: %d\n", ret);
 		kfree_skb(skb);
 		rinfo->skb = NULL;
 		ret = -1;