hso: Fix URB submission -EINVAL.

Added check for IFF_UP in hso_resume, this should eliminate -EINVAL (-22)
errors caused from urb's being submitted twice, once by hso_resume
& once in hso_net_open, if suspend/resume USB power saving  mode is enabled
Signed-off-by: Denis Joseph Barrow <D.Barow@option.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/usb/hso.c

@@ -2762,11 +2762,13 @@ static int hso_resume(struct usb_interface *iface)
 		if (network_table[i] &&
 		    (network_table[i]->interface == iface)) {
 			hso_net = dev2net(network_table[i]);
-			/* First transmit any lingering data, then restart the
-			 * device. */
+			if (hso_net->flags & IFF_UP) {
+				/* First transmit any lingering data,
+				   then restart the device. */
 				if (hso_net->skb_tx_buf) {
 					dev_dbg(&iface->dev,
-					"Transmitting lingering data\n");
+						"Transmitting"
+						" lingering data\n");
 					hso_net_start_xmit(hso_net->skb_tx_buf,
 							   hso_net->net);
 					hso_net->skb_tx_buf = NULL;
@@ -2776,6 +2778,7 @@ static int hso_resume(struct usb_interface *iface)
 					goto out;
 			}
 		}
+	}
 
 out:
 	return result;