From: Sjur Braendeland <sjur.brandeland@stericsson.com>
Date: Tue, 21 Sep 2010 11:44:45 +0000 (+0000)
Subject: caif: Fix function NULL pointer check.
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=e5e03ce1e5c6c015cabf274b24976dff408dc07f;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

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 0fd01dd17c48..b99369a055d1 100644
--- 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))