diff --git a/[refs] b/[refs]
index e2853b4f474a..2a7b09a10baa 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: d9cc20484e5e48c6a5deb4387c20fd45bfbdde8c
+refs/heads/master: 7b797d5b150775d717cb03b5ada28b8bad99afab
diff --git a/trunk/drivers/net/ppp_generic.c b/trunk/drivers/net/ppp_generic.c
index 9293c82ef2af..7e21342becb2 100644
--- a/trunk/drivers/net/ppp_generic.c
+++ b/trunk/drivers/net/ppp_generic.c
@@ -899,17 +899,9 @@ ppp_start_xmit(struct sk_buff *skb, struct net_device *dev)
 
 	/* Put the 2-byte PPP protocol number on the front,
 	   making sure there is room for the address and control fields. */
-	if (skb_headroom(skb) < PPP_HDRLEN) {
-		struct sk_buff *ns;
-
-		ns = alloc_skb(skb->len + dev->hard_header_len, GFP_ATOMIC);
-		if (ns == 0)
-			goto outf;
-		skb_reserve(ns, dev->hard_header_len);
-		skb_copy_bits(skb, 0, skb_put(ns, skb->len), skb->len);
-		kfree_skb(skb);
-		skb = ns;
-	}
+	if (skb_cow_head(skb, PPP_HDRLEN))
+		goto outf;
+
 	pp = skb_push(skb, 2);
 	proto = npindex_to_proto[npi];
 	pp[0] = proto >> 8;