caif: Fix function NULL pointer check.

Check that receive function pointer is not null before calling it.

Signed-off-by: Sjur Braendeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/caif/caif_dev.c b/net/caif/caif_dev.c
index 0fd01dd..b99369a 100644 (file)
--- a/net/caif/caif_dev.c
+++ b/net/caif/caif_dev.c
@@ -173,7 +173,7 @@ static int receive(struct sk_buff *skb, struct net_device *dev,
        net = dev_net(dev);
        pkt = cfpkt_fromnative(CAIF_DIR_IN, skb);
        caifd = caif_get(dev);
-       if (!caifd || !caifd->layer.up || !caifd->layer.up->ctrlcmd)
+       if (!caifd || !caifd->layer.up || !caifd->layer.up->receive)
                return NET_RX_DROP;
 
        if (caifd->layer.up->receive(caifd->layer.up, pkt))