Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

4 files changed, 11 insertions, 34 deletions

diff --git a/net/caif/caif_dev.c b/net/caif/caif_dev.c
index 673728add60b..82c57069415f 100644
--- a/net/caif/caif_dev.c
+++ b/net/caif/caif_dev.c
@@ -59,8 +59,6 @@ struct cfcnfg *get_cfcnfg(struct net *net)
 {
 	struct caif_net *caifn;
 	caifn = net_generic(net, caif_net_id);
-	if (!caifn)
-		return NULL;
 	return caifn->cfg;
 }
 EXPORT_SYMBOL(get_cfcnfg);
@@ -69,8 +67,6 @@ static struct caif_device_entry_list *caif_device_list(struct net *net)
 {
 	struct caif_net *caifn;
 	caifn = net_generic(net, caif_net_id);
-	if (!caifn)
-		return NULL;
 	return &caifn->caifdevs;
 }
 
@@ -99,8 +95,6 @@ static struct caif_device_entry *caif_device_alloc(struct net_device *dev)
 	struct caif_device_entry *caifd;
 
 	caifdevs = caif_device_list(dev_net(dev));
-	if (!caifdevs)
-		return NULL;
 
 	caifd = kzalloc(sizeof(*caifd), GFP_KERNEL);
 	if (!caifd)
@@ -120,8 +114,6 @@ static struct caif_device_entry *caif_get(struct net_device *dev)
 	struct caif_device_entry_list *caifdevs =
 	    caif_device_list(dev_net(dev));
 	struct caif_device_entry *caifd;
-	if (!caifdevs)
-		return NULL;
 
 	list_for_each_entry_rcu(caifd, &caifdevs->list, list) {
 		if (caifd->netdev == dev)
@@ -321,8 +313,6 @@ void caif_enroll_dev(struct net_device *dev, struct caif_dev_common *caifdev,
 	struct caif_device_entry_list *caifdevs;
 
 	caifdevs = caif_device_list(dev_net(dev));
-	if (!cfg || !caifdevs)
-		return;
 	caifd = caif_device_alloc(dev);
 	if (!caifd)
 		return;
@@ -374,8 +364,6 @@ static int caif_device_notify(struct notifier_block *me, unsigned long what,
 
 	cfg = get_cfcnfg(dev_net(dev));
 	caifdevs = caif_device_list(dev_net(dev));
-	if (!cfg || !caifdevs)
-		return 0;
 
 	caifd = caif_get(dev);
 	if (caifd == NULL && dev->type != ARPHRD_CAIF)
@@ -507,9 +495,6 @@ static struct notifier_block caif_device_notifier = {
 static int caif_init_net(struct net *net)
 {
 	struct caif_net *caifn = net_generic(net, caif_net_id);
-	if (WARN_ON(!caifn))
-		return -EINVAL;
-
 	INIT_LIST_HEAD(&caifn->caifdevs.list);
 	mutex_init(&caifn->caifdevs.lock);
 
@@ -527,9 +512,6 @@ static void caif_exit_net(struct net *net)
 	    caif_device_list(net);
 	struct cfcnfg *cfg =  get_cfcnfg(net);
 
-	if (!cfg || !caifdevs)
-		return;
-
 	rtnl_lock();
 	mutex_lock(&caifdevs->lock);
 
@@ -569,7 +551,7 @@ static int __init caif_device_init(void)
 {
 	int result;
 
-	result = register_pernet_device(&caif_net_ops);
+	result = register_pernet_subsys(&caif_net_ops);
 
 	if (result)
 		return result;
@@ -582,7 +564,7 @@ static int __init caif_device_init(void)
 
 static void __exit caif_device_exit(void)
 {
-	unregister_pernet_device(&caif_net_ops);
+	unregister_pernet_subsys(&caif_net_ops);
 	unregister_netdevice_notifier(&caif_device_notifier);
 	dev_remove_pack(&caif_packet_type);
 }
diff --git a/net/caif/caif_socket.c b/net/caif/caif_socket.c
index 0d1131864630..5016fa57b623 100644
--- a/net/caif/caif_socket.c
+++ b/net/caif/caif_socket.c
@@ -506,8 +506,10 @@ static int transmit_skb(struct sk_buff *skb, struct caifsock *cf_sk,
 	pkt = cfpkt_fromnative(CAIF_DIR_OUT, skb);
 	memset(skb->cb, 0, sizeof(struct caif_payload_info));
 
-	if (cf_sk->layer.dn == NULL)
+	if (cf_sk->layer.dn == NULL) {
+		kfree_skb(skb);
 		return -EINVAL;
+	}
 
 	return cf_sk->layer.dn->transmit(cf_sk->layer.dn, pkt);
 }
@@ -650,10 +652,10 @@ static int caif_stream_sendmsg(struct kiocb *kiocb, struct socket *sock,
 		}
 		err = transmit_skb(skb, cf_sk,
 				msg->msg_flags&MSG_DONTWAIT, timeo);
-		if (err < 0) {
-			kfree_skb(skb);
+		if (err < 0)
+			/* skb is already freed */
 			goto pipe_err;
-		}
+
 		sent += size;
 	}
 
diff --git a/net/caif/cfcnfg.c b/net/caif/cfcnfg.c
index 598aafb4cb51..ba9cfd47778a 100644
--- a/net/caif/cfcnfg.c
+++ b/net/caif/cfcnfg.c
@@ -309,7 +309,6 @@ int caif_connect_client(struct net *net, struct caif_connect_request *conn_req,
 	int err;
 	struct cfctrl_link_param param;
 	struct cfcnfg *cfg = get_cfcnfg(net);
-	caif_assert(cfg != NULL);
 
 	rcu_read_lock();
 	err = caif_connect_req_to_link_param(cfg, conn_req, &param);
diff --git a/net/caif/cfmuxl.c b/net/caif/cfmuxl.c
index b36f24a4c8e7..94b08612a4d8 100644
--- a/net/caif/cfmuxl.c
+++ b/net/caif/cfmuxl.c
@@ -248,7 +248,6 @@ static void cfmuxl_ctrlcmd(struct cflayer *layr, enum caif_ctrlcmd ctrl,
 {
 	struct cfmuxl *muxl = container_obj(layr);
 	struct cflayer *layer;
-	int idx;
 
 	rcu_read_lock();
 	list_for_each_entry_rcu(layer, &muxl->srvl_list, node) {
@@ -257,14 +256,9 @@ static void cfmuxl_ctrlcmd(struct cflayer *layr, enum caif_ctrlcmd ctrl,
 
 			if ((ctrl == _CAIF_CTRLCMD_PHYIF_DOWN_IND ||
 				ctrl == CAIF_CTRLCMD_REMOTE_SHUTDOWN_IND) &&
-					layer->id != 0) {
-
-				idx = layer->id % UP_CACHE_SIZE;
-				spin_lock_bh(&muxl->receive_lock);
-				RCU_INIT_POINTER(muxl->up_cache[idx], NULL);
-				list_del_rcu(&layer->node);
-				spin_unlock_bh(&muxl->receive_lock);
-			}
+					layer->id != 0)
+				cfmuxl_remove_uplayer(layr, layer->id);
+
 			/* NOTE: ctrlcmd is not allowed to block */
 			layer->ctrlcmd(layer, ctrl, phyid);
 		}