[PATCH] fix lance using skb_padto

drivers/net/lance.c

@@ -899,8 +899,14 @@ static int lance_start_xmit(struct sk_buff *skb, struct net_device *dev)
 
 	/* The old LANCE chips doesn't automatically pad buffers to min. size. */
 	if (chip_table[lp->chip_version].flags & LANCE_MUST_PAD) {
-		lp->tx_ring[entry].length =
-			-(ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN);
+		if (skb->len < ETH_ZLEN) {
+			skb = skb_padto(skb, ETH_ZLEN);
+			if (skb == NULL)
+				goto out;
+			lp->tx_ring[entry].length = -ETH_ZLEN;
+		}
+		else 
+			lp->tx_ring[entry].length = -skb->len;
 	} else
 		lp->tx_ring[entry].length = -skb->len;
 
@@ -933,6 +939,7 @@ static int lance_start_xmit(struct sk_buff *skb, struct net_device *dev)
 	if ((lp->cur_tx - lp->dirty_tx) >= TX_RING_SIZE)
 		netif_stop_queue(dev);
 
+out:
 	spin_unlock_irqrestore(&lp->devlock, flags);
 	return 0;
 }