diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c
index ec8bd34..3a6a4c1 100644
--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -2279,8 +2279,7 @@
 
 	usb_autopm_put_interface_async(dev->intf);
 
-	if (skb)
-		defer_bh(dev, skb, &dev->txq, tx_done);
+	defer_bh(dev, skb, &dev->txq, tx_done);
 }
 
 static void lan78xx_queue_skb(struct sk_buff_head *list,
@@ -2295,13 +2294,15 @@
 netdev_tx_t lan78xx_start_xmit(struct sk_buff *skb, struct net_device *net)
 {
 	struct lan78xx_net *dev = netdev_priv(net);
+	struct sk_buff *skb2 = NULL;
 
-	if (skb)
-		skb_tx_timestamp(skb);
-
-	skb = lan78xx_tx_prep(dev, skb, GFP_ATOMIC);
 	if (skb) {
-		skb_queue_tail(&dev->txq_pend, skb);
+		skb_tx_timestamp(skb);
+		skb2 = lan78xx_tx_prep(dev, skb, GFP_ATOMIC);
+	}
+
+	if (skb2) {
+		skb_queue_tail(&dev->txq_pend, skb2);
 
 		if (skb_queue_len(&dev->txq_pend) > 10)
 			netif_stop_queue(net);
@@ -2882,10 +2883,6 @@
 			netdev_dbg(dev->net, "skb state %d\n", entry->state);
 			return;
 		}
-		if (!dev->done.prev)
-			BUG_ON(!dev->done.prev);
-		if (!dev->done.next)
-			BUG_ON(!dev->done.next);
 	}
 
 	if (netif_device_present(dev->net) && netif_running(dev->net)) {
@@ -3156,7 +3153,6 @@
 
 	return 0;
 
-	usb_set_intfdata(intf, NULL);
 out3:
 	lan78xx_unbind(dev, intf);
 out2: