ppp_generic: Use skb_peek() in ppp_receive_mp_frame().

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 3 deletions

diff --git a/drivers/net/ppp_generic.c b/drivers/net/ppp_generic.c
index 98e04958fef3..5d4d21516a6c 100644
--- a/drivers/net/ppp_generic.c
+++ b/drivers/net/ppp_generic.c
@@ -1833,9 +1833,11 @@ ppp_receive_mp_frame(struct ppp *ppp, struct sk_buff *skb, struct channel *pch)
 
         /* If the queue is getting long, don't wait any longer for packets
            before the start of the queue. */
-        if (skb_queue_len(&ppp->mrq) >= PPP_MP_MAX_QLEN
-            && seq_before(ppp->minseq, ppp->mrq.next->sequence))
-                ppp->minseq = ppp->mrq.next->sequence;
+        if (skb_queue_len(&ppp->mrq) >= PPP_MP_MAX_QLEN) {
+                struct sk_buff *skb = skb_peek(&ppp->mrq);
+                if (seq_before(ppp->minseq, skb->sequence))
+                        ppp->minseq = skb->sequence;
+        }
 
         /* Pull completed packets off the queue and receive them. */
         while ((skb = ppp_mp_reconstruct(ppp)))