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authorChristopher R. Baker <cbaker@rec.ri.cmu.edu>2014-03-08 11:00:20 -0500
committerMarc Kleine-Budde <mkl@pengutronix.de>2014-03-17 09:20:16 +0100
commit3e66d0138c05d9792f458b96581afdb314bc66d6 (patch)
tree9e45bff1aba06c0d039d603d361d8a37963b6f2b /drivers/net/can/usb
parentc971fa2ae42e73e9ccc2f5e93f268c8742da4c5d (diff)
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>
Diffstat (limited to 'drivers/net/can/usb')
-rw-r--r--drivers/net/can/usb/esd_usb2.c1
-rw-r--r--drivers/net/can/usb/kvaser_usb.c1
-rw-r--r--drivers/net/can/usb/peak_usb/pcan_usb_core.c1
3 files changed, 3 insertions, 0 deletions
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) {