diff --git a/drivers/net/can/at91_can.c b/drivers/net/can/at91_can.c
index 1d00b95f8983..f07fa89b5fd5 100644
--- a/drivers/net/can/at91_can.c
+++ b/drivers/net/can/at91_can.c
@@ -1194,6 +1194,7 @@ static const struct net_device_ops at91_netdev_ops = {
 	.ndo_open	= at91_open,
 	.ndo_stop	= at91_close,
 	.ndo_start_xmit	= at91_start_xmit,
+	.ndo_change_mtu = can_change_mtu,
 };
 
 static ssize_t at91_sysfs_show_mb0_id(struct device *dev,
diff --git a/drivers/net/can/bfin_can.c b/drivers/net/can/bfin_can.c
index 8d2b89a12e09..543ecceb33e9 100644
--- a/drivers/net/can/bfin_can.c
+++ b/drivers/net/can/bfin_can.c
@@ -528,6 +528,7 @@ static const struct net_device_ops bfin_can_netdev_ops = {
 	.ndo_open               = bfin_can_open,
 	.ndo_stop               = bfin_can_close,
 	.ndo_start_xmit         = bfin_can_start_xmit,
+	.ndo_change_mtu         = can_change_mtu,
 };
 
 static int bfin_can_probe(struct platform_device *pdev)
diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c
index 951bfede8f3d..9c32e9ef7694 100644
--- a/drivers/net/can/c_can/c_can.c
+++ b/drivers/net/can/c_can/c_can.c
@@ -1277,6 +1277,7 @@ static const struct net_device_ops c_can_netdev_ops = {
 	.ndo_open = c_can_open,
 	.ndo_stop = c_can_close,
 	.ndo_start_xmit = c_can_start_xmit,
+	.ndo_change_mtu = can_change_mtu,
 };
 
 int register_c_can_dev(struct net_device *dev)
diff --git a/drivers/net/can/cc770/cc770.c b/drivers/net/can/cc770/cc770.c
index 0f12abf6591c..d8379278d648 100644
--- a/drivers/net/can/cc770/cc770.c
+++ b/drivers/net/can/cc770/cc770.c
@@ -823,6 +823,7 @@ static const struct net_device_ops cc770_netdev_ops = {
 	.ndo_open = cc770_open,
 	.ndo_stop = cc770_close,
 	.ndo_start_xmit = cc770_start_xmit,
+	.ndo_change_mtu = can_change_mtu,
 };
 
 int register_cc770dev(struct net_device *dev)
diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c
index c94d698b73c2..f425ec2c7839 100644
--- a/drivers/net/can/flexcan.c
+++ b/drivers/net/can/flexcan.c
@@ -1011,6 +1011,7 @@ static const struct net_device_ops flexcan_netdev_ops = {
 	.ndo_open	= flexcan_open,
 	.ndo_stop	= flexcan_close,
 	.ndo_start_xmit	= flexcan_start_xmit,
+	.ndo_change_mtu = can_change_mtu,
 };
 
 static int register_flexcandev(struct net_device *dev)
diff --git a/drivers/net/can/grcan.c b/drivers/net/can/grcan.c
index ab506d6cab37..3fd9fd942c6e 100644
--- a/drivers/net/can/grcan.c
+++ b/drivers/net/can/grcan.c
@@ -1578,6 +1578,7 @@ static const struct net_device_ops grcan_netdev_ops = {
 	.ndo_open	= grcan_open,
 	.ndo_stop	= grcan_close,
 	.ndo_start_xmit	= grcan_start_xmit,
+	.ndo_change_mtu = can_change_mtu,
 };
 
 static int grcan_setup_netdev(struct platform_device *ofdev,
diff --git a/drivers/net/can/janz-ican3.c b/drivers/net/can/janz-ican3.c
index b47df5e482fa..2382c04dc780 100644
--- a/drivers/net/can/janz-ican3.c
+++ b/drivers/net/can/janz-ican3.c
@@ -1594,6 +1594,7 @@ static const struct net_device_ops ican3_netdev_ops = {
 	.ndo_open	= ican3_open,
 	.ndo_stop	= ican3_stop,
 	.ndo_start_xmit	= ican3_xmit,
+	.ndo_change_mtu = can_change_mtu,
 };
 
 /*
diff --git a/drivers/net/can/mcp251x.c b/drivers/net/can/mcp251x.c
index 50aa630c7dd4..28c11f815245 100644
--- a/drivers/net/can/mcp251x.c
+++ b/drivers/net/can/mcp251x.c
@@ -672,7 +672,7 @@ static int mcp251x_hw_probe(struct spi_device *spi)
 
 static int mcp251x_power_enable(struct regulator *reg, int enable)
 {
-	if (IS_ERR(reg))
+	if (IS_ERR_OR_NULL(reg))
 		return 0;
 
 	if (enable)
@@ -996,6 +996,7 @@ static const struct net_device_ops mcp251x_netdev_ops = {
 	.ndo_open = mcp251x_open,
 	.ndo_stop = mcp251x_stop,
 	.ndo_start_xmit = mcp251x_hard_start_xmit,
+	.ndo_change_mtu = can_change_mtu,
 };
 
 static const struct of_device_id mcp251x_of_match[] = {
@@ -1217,7 +1218,7 @@ static int __maybe_unused mcp251x_can_suspend(struct device *dev)
 		priv->after_suspend = AFTER_SUSPEND_DOWN;
 	}
 
-	if (!IS_ERR(priv->power)) {
+	if (!IS_ERR_OR_NULL(priv->power)) {
 		regulator_disable(priv->power);
 		priv->after_suspend |= AFTER_SUSPEND_POWER;
 	}
diff --git a/drivers/net/can/mscan/mscan.c b/drivers/net/can/mscan/mscan.c
index b9f3faabb0f3..e0c9be5e2ab7 100644
--- a/drivers/net/can/mscan/mscan.c
+++ b/drivers/net/can/mscan/mscan.c
@@ -647,9 +647,10 @@ static int mscan_close(struct net_device *dev)
 }
 
 static const struct net_device_ops mscan_netdev_ops = {
-       .ndo_open               = mscan_open,
-       .ndo_stop               = mscan_close,
-       .ndo_start_xmit         = mscan_start_xmit,
+	.ndo_open	= mscan_open,
+	.ndo_stop	= mscan_close,
+	.ndo_start_xmit	= mscan_start_xmit,
+	.ndo_change_mtu	= can_change_mtu,
 };
 
 int register_mscandev(struct net_device *dev, int mscan_clksrc)
diff --git a/drivers/net/can/pch_can.c b/drivers/net/can/pch_can.c
index 6c077eb87b5e..6472562efedc 100644
--- a/drivers/net/can/pch_can.c
+++ b/drivers/net/can/pch_can.c
@@ -950,6 +950,7 @@ static const struct net_device_ops pch_can_netdev_ops = {
 	.ndo_open		= pch_can_open,
 	.ndo_stop		= pch_close,
 	.ndo_start_xmit		= pch_xmit,
+	.ndo_change_mtu		= can_change_mtu,
 };
 
 static void pch_can_remove(struct pci_dev *pdev)
diff --git a/drivers/net/can/sja1000/ems_pci.c b/drivers/net/can/sja1000/ems_pci.c
index d790b874ca79..fd13dbf07d9c 100644
--- a/drivers/net/can/sja1000/ems_pci.c
+++ b/drivers/net/can/sja1000/ems_pci.c
@@ -323,6 +323,7 @@ static int ems_pci_add_card(struct pci_dev *pdev,
 			priv->cdr = EMS_PCI_CDR;
 
 			SET_NETDEV_DEV(dev, &pdev->dev);
+			dev->dev_id = i;
 
 			if (card->version == 1)
 				/* reset int flag of pita */
diff --git a/drivers/net/can/sja1000/ems_pcmcia.c b/drivers/net/can/sja1000/ems_pcmcia.c
index 9e535f2ef52b..381de998d2f1 100644
--- a/drivers/net/can/sja1000/ems_pcmcia.c
+++ b/drivers/net/can/sja1000/ems_pcmcia.c
@@ -211,6 +211,7 @@ static int ems_pcmcia_add_card(struct pcmcia_device *pdev, unsigned long base)
 		priv = netdev_priv(dev);
 		priv->priv = card;
 		SET_NETDEV_DEV(dev, &pdev->dev);
+		dev->dev_id = i;
 
 		priv->irq_flags = IRQF_SHARED;
 		dev->irq = pdev->irq;
diff --git a/drivers/net/can/sja1000/kvaser_pci.c b/drivers/net/can/sja1000/kvaser_pci.c
index c96eb14699d5..23b8e1324e25 100644
--- a/drivers/net/can/sja1000/kvaser_pci.c
+++ b/drivers/net/can/sja1000/kvaser_pci.c
@@ -270,6 +270,7 @@ static int kvaser_pci_add_chan(struct pci_dev *pdev, int channel,
 		 priv->reg_base, board->conf_addr, dev->irq);
 
 	SET_NETDEV_DEV(dev, &pdev->dev);
+	dev->dev_id = channel;
 
 	/* Register SJA1000 device */
 	err = register_sja1000dev(dev);
diff --git a/drivers/net/can/sja1000/peak_pci.c b/drivers/net/can/sja1000/peak_pci.c
index 065ca49eb45e..c540e3d12e3d 100644
--- a/drivers/net/can/sja1000/peak_pci.c
+++ b/drivers/net/can/sja1000/peak_pci.c
@@ -642,6 +642,7 @@ static int peak_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 		icr |= chan->icr_mask;
 
 		SET_NETDEV_DEV(dev, &pdev->dev);
+		dev->dev_id = i;
 
 		/* Create chain of SJA1000 devices */
 		chan->prev_dev = pci_get_drvdata(pdev);
diff --git a/drivers/net/can/sja1000/peak_pcmcia.c b/drivers/net/can/sja1000/peak_pcmcia.c
index f7ad754dd2aa..dd56133cc461 100644
--- a/drivers/net/can/sja1000/peak_pcmcia.c
+++ b/drivers/net/can/sja1000/peak_pcmcia.c
@@ -550,6 +550,7 @@ static int pcan_add_channels(struct pcan_pccard *card)
 		priv = netdev_priv(netdev);
 		priv->priv = card;
 		SET_NETDEV_DEV(netdev, &pdev->dev);
+		netdev->dev_id = i;
 
 		priv->irq_flags = IRQF_SHARED;
 		netdev->irq = pdev->irq;
diff --git a/drivers/net/can/sja1000/plx_pci.c b/drivers/net/can/sja1000/plx_pci.c
index fbb61a0d901f..ec39b7cb2287 100644
--- a/drivers/net/can/sja1000/plx_pci.c
+++ b/drivers/net/can/sja1000/plx_pci.c
@@ -587,6 +587,7 @@ static int plx_pci_add_card(struct pci_dev *pdev,
 			priv->cdr = ci->cdr;
 
 			SET_NETDEV_DEV(dev, &pdev->dev);
+			dev->dev_id = i;
 
 			/* Register SJA1000 device */
 			err = register_sja1000dev(dev);
diff --git a/drivers/net/can/sja1000/sja1000.c b/drivers/net/can/sja1000/sja1000.c
index 55cce4737518..f31499a32d7d 100644
--- a/drivers/net/can/sja1000/sja1000.c
+++ b/drivers/net/can/sja1000/sja1000.c
@@ -642,9 +642,10 @@ void free_sja1000dev(struct net_device *dev)
 EXPORT_SYMBOL_GPL(free_sja1000dev);
 
 static const struct net_device_ops sja1000_netdev_ops = {
-       .ndo_open               = sja1000_open,
-       .ndo_stop               = sja1000_close,
-       .ndo_start_xmit         = sja1000_start_xmit,
+	.ndo_open	= sja1000_open,
+	.ndo_stop	= sja1000_close,
+	.ndo_start_xmit	= sja1000_start_xmit,
+	.ndo_change_mtu	= can_change_mtu,
 };
 
 int register_sja1000dev(struct net_device *dev)
diff --git a/drivers/net/can/slcan.c b/drivers/net/can/slcan.c
index 3fcdae266377..f5b16e0e3a12 100644
--- a/drivers/net/can/slcan.c
+++ b/drivers/net/can/slcan.c
@@ -411,10 +411,16 @@ static void slc_free_netdev(struct net_device *dev)
 	slcan_devs[i] = NULL;
 }
 
+static int slcan_change_mtu(struct net_device *dev, int new_mtu)
+{
+	return -EINVAL;
+}
+
 static const struct net_device_ops slc_netdev_ops = {
 	.ndo_open               = slc_open,
 	.ndo_stop               = slc_close,
 	.ndo_start_xmit         = slc_xmit,
+	.ndo_change_mtu         = slcan_change_mtu,
 };
 
 static void slc_setup(struct net_device *dev)
diff --git a/drivers/net/can/softing/softing_main.c b/drivers/net/can/softing/softing_main.c
index 9ea0dcde94ce..7d8c8f3672dd 100644
--- a/drivers/net/can/softing/softing_main.c
+++ b/drivers/net/can/softing/softing_main.c
@@ -628,6 +628,7 @@ static const struct net_device_ops softing_netdev_ops = {
 	.ndo_open = softing_netdev_open,
 	.ndo_stop = softing_netdev_stop,
 	.ndo_start_xmit	= softing_netdev_start_xmit,
+	.ndo_change_mtu = can_change_mtu,
 };
 
 static const struct can_bittiming_const softing_btr_const = {
@@ -832,6 +833,7 @@ static int softing_pdev_probe(struct platform_device *pdev)
 			ret = -ENOMEM;
 			goto netdev_failed;
 		}
+		netdev->dev_id = j;
 		priv = netdev_priv(card->net[j]);
 		priv->index = j;
 		ret = softing_netdev_register(netdev);
diff --git a/drivers/net/can/ti_hecc.c b/drivers/net/can/ti_hecc.c
index 2c62fe6c8fa9..258b9c4856ec 100644
--- a/drivers/net/can/ti_hecc.c
+++ b/drivers/net/can/ti_hecc.c
@@ -871,6 +871,7 @@ static const struct net_device_ops ti_hecc_netdev_ops = {
 	.ndo_open		= ti_hecc_open,
 	.ndo_stop		= ti_hecc_close,
 	.ndo_start_xmit		= ti_hecc_xmit,
+	.ndo_change_mtu		= can_change_mtu,
 };
 
 static int ti_hecc_probe(struct platform_device *pdev)
diff --git a/drivers/net/can/usb/ems_usb.c b/drivers/net/can/usb/ems_usb.c
index 52c42fd49510..00f2534dde73 100644
--- a/drivers/net/can/usb/ems_usb.c
+++ b/drivers/net/can/usb/ems_usb.c
@@ -883,6 +883,7 @@ static const struct net_device_ops ems_usb_netdev_ops = {
 	.ndo_open = ems_usb_open,
 	.ndo_stop = ems_usb_close,
 	.ndo_start_xmit = ems_usb_start_xmit,
+	.ndo_change_mtu = can_change_mtu,
 };
 
 static const struct can_bittiming_const ems_usb_bittiming_const = {
diff --git a/drivers/net/can/usb/esd_usb2.c b/drivers/net/can/usb/esd_usb2.c
index 7fbe85935f1d..b7c9e8b11460 100644
--- a/drivers/net/can/usb/esd_usb2.c
+++ b/drivers/net/can/usb/esd_usb2.c
@@ -888,6 +888,7 @@ static const struct net_device_ops esd_usb2_netdev_ops = {
 	.ndo_open = esd_usb2_open,
 	.ndo_stop = esd_usb2_close,
 	.ndo_start_xmit = esd_usb2_start_xmit,
+	.ndo_change_mtu = can_change_mtu,
 };
 
 static const struct can_bittiming_const esd_usb2_bittiming_const = {
@@ -1024,6 +1025,7 @@ static int esd_usb2_probe_one_net(struct usb_interface *intf, int index)
 	netdev->netdev_ops = &esd_usb2_netdev_ops;
 
 	SET_NETDEV_DEV(netdev, &intf->dev);
+	netdev->dev_id = index;
 
 	err = register_candev(netdev);
 	if (err) {
diff --git a/drivers/net/can/usb/kvaser_usb.c b/drivers/net/can/usb/kvaser_usb.c
index e77d11049747..4ca46edc061d 100644
--- a/drivers/net/can/usb/kvaser_usb.c
+++ b/drivers/net/can/usb/kvaser_usb.c
@@ -1388,6 +1388,7 @@ static const struct net_device_ops kvaser_usb_netdev_ops = {
 	.ndo_open = kvaser_usb_open,
 	.ndo_stop = kvaser_usb_close,
 	.ndo_start_xmit = kvaser_usb_start_xmit,
+	.ndo_change_mtu = can_change_mtu,
 };
 
 static const struct can_bittiming_const kvaser_usb_bittiming_const = {
@@ -1529,6 +1530,7 @@ static int kvaser_usb_init_one(struct usb_interface *intf,
 	netdev->netdev_ops = &kvaser_usb_netdev_ops;
 
 	SET_NETDEV_DEV(netdev, &intf->dev);
+	netdev->dev_id = channel;
 
 	dev->nets[channel] = priv;
 
diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_core.c b/drivers/net/can/usb/peak_usb/pcan_usb_core.c
index 0b7a4c3b01a2..644e6ab8a489 100644
--- a/drivers/net/can/usb/peak_usb/pcan_usb_core.c
+++ b/drivers/net/can/usb/peak_usb/pcan_usb_core.c
@@ -702,6 +702,7 @@ static const struct net_device_ops peak_usb_netdev_ops = {
 	.ndo_open = peak_usb_ndo_open,
 	.ndo_stop = peak_usb_ndo_stop,
 	.ndo_start_xmit = peak_usb_ndo_start_xmit,
+	.ndo_change_mtu = can_change_mtu,
 };
 
 /*
@@ -769,6 +770,7 @@ static int peak_usb_create_dev(struct peak_usb_adapter *peak_usb_adapter,
 	usb_set_intfdata(intf, dev);
 
 	SET_NETDEV_DEV(netdev, &intf->dev);
+	netdev->dev_id = ctrl_idx;
 
 	err = register_candev(netdev);
 	if (err) {
diff --git a/drivers/net/can/usb/usb_8dev.c b/drivers/net/can/usb/usb_8dev.c
index a0fa1fd5092b..cde263459932 100644
--- a/drivers/net/can/usb/usb_8dev.c
+++ b/drivers/net/can/usb/usb_8dev.c
@@ -887,6 +887,7 @@ static const struct net_device_ops usb_8dev_netdev_ops = {
 	.ndo_open = usb_8dev_open,
 	.ndo_stop = usb_8dev_close,
 	.ndo_start_xmit = usb_8dev_start_xmit,
+	.ndo_change_mtu = can_change_mtu,
 };
 
 static const struct can_bittiming_const usb_8dev_bittiming_const = {