can: populate netdev::dev_id for udev discrimination

My objective is to be able to totally discriminate CAN ports on multi-port
cards via udev so as to rename them to semantically interesting/unique names
for my system (e.g., "ecuCAN" and "auxCAN" instead of "can0" and "can1").

The following patch assigns the dev_id field to match the channel number on all
multi-channel devices. I can only test my two-port Peak PCI card, but it works
as expected: ATTRS{dev_id} now expresses the port number and my udev rules now
unambiguously pick out and rename my individual CAN ports.

Signed-off-by: Christopher R. Baker <cbaker@rec.ri.cmu.edu>
Tested-by: Oliver Hartkopp <socketcan@hartkopp.net> [PEAK PCAN-USB pro and EMS PCMCIA]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

10 files changed, 10 insertions, 0 deletions

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/softing/softing_main.c b/drivers/net/can/softing/softing_main.c
index 3766bd90f3ed..7d8c8f3672dd 100644
--- a/drivers/net/can/softing/softing_main.c
+++ b/drivers/net/can/softing/softing_main.c
@@ -833,6 +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/usb/esd_usb2.c b/drivers/net/can/usb/esd_usb2.c
index 1f8ce91adbd3..b7c9e8b11460 100644
--- a/drivers/net/can/usb/esd_usb2.c
+++ b/drivers/net/can/usb/esd_usb2.c
@@ -1025,6 +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 ea596b53a5ae..4ca46edc061d 100644
--- a/drivers/net/can/usb/kvaser_usb.c
+++ b/drivers/net/can/usb/kvaser_usb.c
@@ -1530,6 +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 93e4a55a6c23..644e6ab8a489 100644
--- a/drivers/net/can/usb/peak_usb/pcan_usb_core.c
+++ b/drivers/net/can/usb/peak_usb/pcan_usb_core.c
@@ -770,6 +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) {