X-Git-Url: https://git.stricted.de/?a=blobdiff_plain;f=net%2Fnetrom%2Faf_netrom.c;h=f4675bf3976c96c6e90c7dd4cbef1d7a63fe2a13;hb=8d5cf596d10d740b69b5f4bbdb54b85abf75810d;hp=ecc796878f38cf5ba9bca426c7cc47e941aefaa7;hpb=dece75b3a288fa49b3aab685543ec2f5c94b8cfc;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git

diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c
index ecc796878f38..f4675bf3976c 100644
--- a/net/netrom/af_netrom.c
+++ b/net/netrom/af_netrom.c
@@ -65,6 +65,14 @@ static DEFINE_SPINLOCK(nr_list_lock);
 
 static const struct proto_ops nr_proto_ops;
 
+/*
+ * NETROM network devices are virtual network devices encapsulating NETROM
+ * frames into AX.25 which will be sent through an AX.25 device, so form a
+ * special "super class" of normal net devices; split their locks off into a
+ * separate class since they always nest.
+ */
+static struct lock_class_key nr_netdev_xmit_lock_key;
+
 /*
  *	Socket removal during an interrupt is now safe.
  */
@@ -986,18 +994,18 @@ int nr_rx_frame(struct sk_buff *skb, struct net_device *dev)
 	nr_make->vl        = 0;
 	nr_make->state     = NR_STATE_3;
 	sk_acceptq_added(sk);
-
-	nr_insert_socket(make);
-
 	skb_queue_head(&sk->sk_receive_queue, skb);
 
-	nr_start_heartbeat(make);
-	nr_start_idletimer(make);
-
 	if (!sock_flag(sk, SOCK_DEAD))
 		sk->sk_data_ready(sk, skb->len);
 
 	bh_unlock_sock(sk);
+
+	nr_insert_socket(make);
+
+	nr_start_heartbeat(make);
+	nr_start_idletimer(make);
+
 	return 1;
 }
 
@@ -1369,6 +1377,11 @@ static struct notifier_block nr_dev_notifier = {
 
 static struct net_device **dev_nr;
 
+static struct ax25_protocol nr_pid = {
+	.pid	= AX25_P_NETROM,
+	.func	= nr_route_frame
+};
+
 static int __init nr_proto_init(void)
 {
 	int i;
@@ -1405,6 +1418,7 @@ static int __init nr_proto_init(void)
 			free_netdev(dev);
 			goto fail;
 		}
+		lockdep_set_class(&dev->_xmit_lock, &nr_netdev_xmit_lock_key);
 		dev_nr[i] = dev;
 	}
 
@@ -1415,7 +1429,7 @@ static int __init nr_proto_init(void)
 		
 	register_netdevice_notifier(&nr_dev_notifier);
 
-	ax25_protocol_register(AX25_P_NETROM, nr_route_frame);
+	ax25_register_pid(&nr_pid);
 	ax25_linkfail_register(nr_link_failed);
 
 #ifdef CONFIG_SYSCTL