caif: fix NULL pointer check

Reported-by: <[email protected]> Resolves-bug: http://bugzilla.kernel.org/show_bug?44441 Signed-off-by: Alan Cox <[email protected]> Signed-off-by: David S. Miller <[email protected]>
jadonk · Jul 24, 2012 · c66b9b7 · c66b9b7
1 parent 3324d02
commit c66b9b7
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/drivers/net/caif/caif_serial.c b/drivers/net/caif/caif_serial.c
@@ -325,6 +325,9 @@ static int ldisc_open(struct tty_struct *tty)
 
 	sprintf(name, "cf%s", tty->name);
 	dev = alloc_netdev(sizeof(*ser), name, caifdev_setup);
+	if (!dev)
+		return -ENOMEM;
+
 	ser = netdev_priv(dev);
 	ser->tty = tty_kref_get(tty);
 	ser->dev = dev;