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can: populate netdev::dev_id for udev discrimination

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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>
This commit is contained in:
Christopher R. Baker
2014-03-08 11:00:20 -05:00
committed by Marc Kleine-Budde
parent c971fa2ae4
commit 3e66d0138c
10 changed files with 10 additions and 0 deletions
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1
drivers/net/can/softing/softing_main.c
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@@ -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);