diff --git a/include/net/caif/caif_dev.h b/include/net/caif/caif_dev.h
index 028b754ae9b179c64b3a928d36a7108bde39921b..0baf2e21a533f68e5ef8e38307d735482972833e 100644
--- a/include/net/caif/caif_dev.h
+++ b/include/net/caif/caif_dev.h
@@ -119,7 +119,7 @@ void caif_free_client(struct cflayer *adap_layer);
  * The link_support layer is used to add any Link Layer specific
  * framing.
  */
-void caif_enroll_dev(struct net_device *dev, struct caif_dev_common *caifdev,
+int caif_enroll_dev(struct net_device *dev, struct caif_dev_common *caifdev,
 			struct cflayer *link_support, int head_room,
 			struct cflayer **layer, int (**rcv_func)(
 				struct sk_buff *, struct net_device *,
diff --git a/include/net/caif/cfcnfg.h b/include/net/caif/cfcnfg.h
index 70bfd017581fb79060c6c63d0302ce6c0490990f..219094ace893c6d53d518cea33b2d679adf3679b 100644
--- a/include/net/caif/cfcnfg.h
+++ b/include/net/caif/cfcnfg.h
@@ -62,7 +62,7 @@ void cfcnfg_remove(struct cfcnfg *cfg);
  * @fcs:	Specify if checksum is used in CAIF Framing Layer.
  * @head_room:	Head space needed by link specific protocol.
  */
-void
+int
 cfcnfg_add_phy_layer(struct cfcnfg *cnfg,
 		     struct net_device *dev, struct cflayer *phy_layer,
 		     enum cfcnfg_phy_preference pref,
diff --git a/include/net/caif/cfserl.h b/include/net/caif/cfserl.h
index b5b020f3c72ebcd1e43d1c9c177a2782cf49b9a9..bc3fae07a25f901974ee0851f82e66956f600f06 100644
--- a/include/net/caif/cfserl.h
+++ b/include/net/caif/cfserl.h
@@ -9,4 +9,5 @@
 #include <net/caif/caif_layer.h>
 
 struct cflayer *cfserl_create(int instance, bool use_stx);
+void cfserl_release(struct cflayer *layer);
 #endif
diff --git a/net/caif/caif_dev.c b/net/caif/caif_dev.c
index 711d7156efd8bc94b449d0e8066eedd4fe0d5747..cc305d84168f4d2040a7285d91fd9e018a26339d 100644
--- a/net/caif/caif_dev.c
+++ b/net/caif/caif_dev.c
@@ -303,7 +303,7 @@ static void dev_flowctrl(struct net_device *dev, int on)
 	caifd_put(caifd);
 }
 
-void caif_enroll_dev(struct net_device *dev, struct caif_dev_common *caifdev,
+int caif_enroll_dev(struct net_device *dev, struct caif_dev_common *caifdev,
 		     struct cflayer *link_support, int head_room,
 		     struct cflayer **layer,
 		     int (**rcv_func)(struct sk_buff *, struct net_device *,
@@ -314,11 +314,12 @@ void caif_enroll_dev(struct net_device *dev, struct caif_dev_common *caifdev,
 	enum cfcnfg_phy_preference pref;
 	struct cfcnfg *cfg = get_cfcnfg(dev_net(dev));
 	struct caif_device_entry_list *caifdevs;
+	int res;
 
 	caifdevs = caif_device_list(dev_net(dev));
 	caifd = caif_device_alloc(dev);
 	if (!caifd)
-		return;
+		return -ENOMEM;
 	*layer = &caifd->layer;
 	spin_lock_init(&caifd->flow_lock);
 
@@ -339,7 +340,7 @@ void caif_enroll_dev(struct net_device *dev, struct caif_dev_common *caifdev,
 	strlcpy(caifd->layer.name, dev->name,
 		sizeof(caifd->layer.name));
 	caifd->layer.transmit = transmit;
-	cfcnfg_add_phy_layer(cfg,
+	res = cfcnfg_add_phy_layer(cfg,
 				dev,
 				&caifd->layer,
 				pref,
@@ -349,6 +350,7 @@ void caif_enroll_dev(struct net_device *dev, struct caif_dev_common *caifdev,
 	mutex_unlock(&caifdevs->lock);
 	if (rcv_func)
 		*rcv_func = receive;
+	return res;
 }
 EXPORT_SYMBOL(caif_enroll_dev);
 
@@ -363,6 +365,7 @@ static int caif_device_notify(struct notifier_block *me, unsigned long what,
 	struct cflayer *layer, *link_support;
 	int head_room = 0;
 	struct caif_device_entry_list *caifdevs;
+	int res;
 
 	cfg = get_cfcnfg(dev_net(dev));
 	caifdevs = caif_device_list(dev_net(dev));
@@ -388,8 +391,10 @@ static int caif_device_notify(struct notifier_block *me, unsigned long what,
 				break;
 			}
 		}
-		caif_enroll_dev(dev, caifdev, link_support, head_room,
+		res = caif_enroll_dev(dev, caifdev, link_support, head_room,
 				&layer, NULL);
+		if (res)
+			cfserl_release(link_support);
 		caifdev->flowctrl = dev_flowctrl;
 		break;
 
diff --git a/net/caif/caif_usb.c b/net/caif/caif_usb.c
index 1a082a946045e53f1617cc9a814bae5dcb9784e7..76d49a1bc6f685f8ae87efc95cb41623ef845b38 100644
--- a/net/caif/caif_usb.c
+++ b/net/caif/caif_usb.c
@@ -116,6 +116,11 @@ static struct cflayer *cfusbl_create(int phyid, u8 ethaddr[ETH_ALEN],
 	return (struct cflayer *) this;
 }
 
+static void cfusbl_release(struct cflayer *layer)
+{
+	kfree(layer);
+}
+
 static struct packet_type caif_usb_type __read_mostly = {
 	.type = cpu_to_be16(ETH_P_802_EX1),
 };
@@ -128,6 +133,7 @@ static int cfusbl_device_notify(struct notifier_block *me, unsigned long what,
 	struct cflayer *layer, *link_support;
 	struct usbnet *usbnet;
 	struct usb_device *usbdev;
+	int res;
 
 	/* Check whether we have a NCM device, and find its VID/PID. */
 	if (!(dev->dev.parent && dev->dev.parent->driver &&
@@ -170,8 +176,11 @@ static int cfusbl_device_notify(struct notifier_block *me, unsigned long what,
 	if (dev->num_tx_queues > 1)
 		pr_warn("USB device uses more than one tx queue\n");
 
-	caif_enroll_dev(dev, &common, link_support, CFUSB_MAX_HEADLEN,
+	res = caif_enroll_dev(dev, &common, link_support, CFUSB_MAX_HEADLEN,
 			&layer, &caif_usb_type.func);
+	if (res)
+		goto err;
+
 	if (!pack_added)
 		dev_add_pack(&caif_usb_type);
 	pack_added = true;
@@ -179,6 +188,9 @@ static int cfusbl_device_notify(struct notifier_block *me, unsigned long what,
 	strlcpy(layer->name, dev->name, sizeof(layer->name));
 
 	return 0;
+err:
+	cfusbl_release(link_support);
+	return res;
 }
 
 static struct notifier_block caif_device_notifier = {
diff --git a/net/caif/cfcnfg.c b/net/caif/cfcnfg.c
index 8f00bea093b942f8b50193def6d311d09e75b8eb..b456b79abd3b775634fa2f3ddc4d4f1d79e7f5fa 100644
--- a/net/caif/cfcnfg.c
+++ b/net/caif/cfcnfg.c
@@ -450,7 +450,7 @@ cfcnfg_linkup_rsp(struct cflayer *layer, u8 channel_id, enum cfctrl_srv serv,
 	rcu_read_unlock();
 }
 
-void
+int
 cfcnfg_add_phy_layer(struct cfcnfg *cnfg,
 		     struct net_device *dev, struct cflayer *phy_layer,
 		     enum cfcnfg_phy_preference pref,
@@ -459,7 +459,7 @@ cfcnfg_add_phy_layer(struct cfcnfg *cnfg,
 {
 	struct cflayer *frml;
 	struct cfcnfg_phyinfo *phyinfo = NULL;
-	int i;
+	int i, res = 0;
 	u8 phyid;
 
 	mutex_lock(&cnfg->lock);
@@ -473,12 +473,15 @@ cfcnfg_add_phy_layer(struct cfcnfg *cnfg,
 			goto got_phyid;
 	}
 	pr_warn("Too many CAIF Link Layers (max 6)\n");
+	res = -EEXIST;
 	goto out;
 
 got_phyid:
 	phyinfo = kzalloc(sizeof(struct cfcnfg_phyinfo), GFP_ATOMIC);
-	if (!phyinfo)
+	if (!phyinfo) {
+		res = -ENOMEM;
 		goto out_err;
+	}
 
 	phy_layer->id = phyid;
 	phyinfo->pref = pref;
@@ -492,8 +495,10 @@ cfcnfg_add_phy_layer(struct cfcnfg *cnfg,
 
 	frml = cffrml_create(phyid, fcs);
 
-	if (!frml)
+	if (!frml) {
+		res = -ENOMEM;
 		goto out_err;
+	}
 	phyinfo->frm_layer = frml;
 	layer_set_up(frml, cnfg->mux);
 
@@ -511,11 +516,12 @@ cfcnfg_add_phy_layer(struct cfcnfg *cnfg,
 	list_add_rcu(&phyinfo->node, &cnfg->phys);
 out:
 	mutex_unlock(&cnfg->lock);
-	return;
+	return res;
 
 out_err:
 	kfree(phyinfo);
 	mutex_unlock(&cnfg->lock);
+	return res;
 }
 EXPORT_SYMBOL(cfcnfg_add_phy_layer);
 
diff --git a/net/caif/cfserl.c b/net/caif/cfserl.c
index ce60f06d76de30bdc08f0db6599b6c355c34c529..af1e1e36dc90a3c33bdf499c17685f260cb7bc98 100644
--- a/net/caif/cfserl.c
+++ b/net/caif/cfserl.c
@@ -31,6 +31,11 @@ static int cfserl_transmit(struct cflayer *layr, struct cfpkt *pkt);
 static void cfserl_ctrlcmd(struct cflayer *layr, enum caif_ctrlcmd ctrl,
 			   int phyid);
 
+void cfserl_release(struct cflayer *layer)
+{
+	kfree(layer);
+}
+
 struct cflayer *cfserl_create(int instance, bool use_stx)
 {
 	struct cfserl *this = kzalloc(sizeof(struct cfserl), GFP_ATOMIC);