can: populate netdev::dev_id for udev discrimination
authorChristopher R. Baker <cbaker@rec.ri.cmu.edu>
Sat, 8 Mar 2014 16:00:20 +0000 (11:00 -0500)
committerMarc Kleine-Budde <mkl@pengutronix.de>
Mon, 17 Mar 2014 08:20:16 +0000 (09:20 +0100)
commit3e66d0138c05d9792f458b96581afdb314bc66d6
tree9e45bff1aba06c0d039d603d361d8a37963b6f2b
parentc971fa2ae42e73e9ccc2f5e93f268c8742da4c5d
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>
drivers/net/can/sja1000/ems_pci.c
drivers/net/can/sja1000/ems_pcmcia.c
drivers/net/can/sja1000/kvaser_pci.c
drivers/net/can/sja1000/peak_pci.c
drivers/net/can/sja1000/peak_pcmcia.c
drivers/net/can/sja1000/plx_pci.c
drivers/net/can/softing/softing_main.c
drivers/net/can/usb/esd_usb2.c
drivers/net/can/usb/kvaser_usb.c
drivers/net/can/usb/peak_usb/pcan_usb_core.c