diff --git a/net/caif/caif_dev.c b/net/caif/caif_dev.c
index 673728a..82c5706 100644
--- a/net/caif/caif_dev.c
+++ b/net/caif/caif_dev.c
@@ -59,8 +59,6 @@
 {
 	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 @@
 {
 	struct caif_net *caifn;
 	caifn = net_generic(net, caif_net_id);
-	if (!caifn)
-		return NULL;
 	return &caifn->caifdevs;
 }
 
@@ -99,8 +95,6 @@
 	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 @@
 	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 @@
 	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 @@
 
 	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 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 @@
 	    caif_device_list(net);
 	struct cfcnfg *cfg =  get_cfcnfg(net);
 
-	if (!cfg || !caifdevs)
-		return;
-
 	rtnl_lock();
 	mutex_lock(&caifdevs->lock);
 
@@ -569,7 +551,7 @@
 {
 	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 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/cfcnfg.c b/net/caif/cfcnfg.c
index 598aafb..ba9cfd4 100644
--- a/net/caif/cfcnfg.c
+++ b/net/caif/cfcnfg.c
@@ -309,7 +309,6 @@
 	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);