On Sun, Oct 25, 2020 at 09:49:43AM +0100, Oliver Hartkopp wrote:
> > > Thanks, will do. I am currently trying to finish up my ELC-E talk
> > > prep :) but will get back to you with the results of testing later.
> >
> > I noticed up doing a modprobe that there are several Unknown symbol errors.
> >
> > Any ideas?
> >
> > [ 358.686691] mcp251xfd: Unknown symbol can_rx_offload_del (err -2)
> > [ 358.686744] mcp251xfd: Unknown symbol can_put_echo_skb (err -2)
> > [ 358.686796] mcp251xfd: Unknown symbol can_len2dlc (err -2)
> > [ 358.686844] mcp251xfd: Unknown symbol alloc_canfd_skb (err -2)
> > [ 358.686942] mcp251xfd: Unknown symbol open_candev (err -2)
> > [ 358.687042] mcp251xfd: Unknown symbol alloc_can_skb (err -2)
> > [ 358.687093] mcp251xfd: Unknown symbol unregister_candev (err -2)
> > [ 358.687139] mcp251xfd: Unknown symbol can_change_state (err -2)
> > [ 358.687183] mcp251xfd: Unknown symbol can_change_mtu (err -2)
> > [ 358.687227] mcp251xfd: Unknown symbol can_rx_offload_add_manual (err -2)
> > [ 358.687294] mcp251xfd: Unknown symbol free_candev (err -2)
> > [ 358.687345] mcp251xfd: Unknown symbol alloc_candev_mqs (err -2)
> > [ 358.687416] mcp251xfd: Unknown symbol close_candev (err -2)
> > [ 358.687475] mcp251xfd: Unknown symbol can_bus_off (err -2)
> > [ 358.687519] mcp251xfd: Unknown symbol can_rx_offload_enable (err -2)
> > [ 358.687569] mcp251xfd: Unknown symbol can_rx_offload_get_echo_skb (err -2)
> > [ 358.687656] mcp251xfd: Unknown symbol can_dlc2len (err -2)
> > [ 358.687710] mcp251xfd: Unknown symbol alloc_can_err_skb (err -2)
> > [ 358.687773] mcp251xfd: Unknown symbol can_rx_offload_queue_sorted (err -2)
> > [ 358.687819] mcp251xfd: Unknown symbol register_candev (err -2)
> > [ 369.092608] CAN device driver interface
>
> The can-dev module has been loaded *after* mcp251xfd.
>
> Don't know why autoloading did not work on your machine but doing a
> 'modprobe can-dev' before loading the MCP driver should do it for a test.
>
> > root@raspberrypi:~# modinfo mcp251xfd
> > filename:
> > /lib/modules/5.4.72-v7l+/kernel/drivers/net/can/spi/mcp251xfd/mcp251xfd.ko
> > license: GPL v2
> > description: Microchip MCP251xFD Family CAN controller driver
> > author: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
> > srcversion: 1E05EEB5939E9AB22BA2E1B
> > alias: spi:mcp251xfd
> > alias: spi:mcp2518fd
> > alias: spi:mcp2517fd
> > alias: of:N*T*Cmicrochip,mcp251xfdC*
> > alias: of:N*T*Cmicrochip,mcp251xfd
> > alias: of:N*T*Cmicrochip,mcp2518fdC*
> > alias: of:N*T*Cmicrochip,mcp2518fd
> > alias: of:N*T*Cmicrochip,mcp2517fdC*
> > alias: of:N*T*Cmicrochip,mcp2517fd
> > depends: can-dev
^^^^^^^
> > intree: Y
> > name: mcp251xfd
> > vermagic: 5.4.72-v7l+ SMP mod_unload modversions ARMv7 p2v8
The dependencies are correct. Try running a "depmod -a". If you are on a distro
with udev, manual modprobe should not be needed, as udev should load all needed
modules automatically during boot.
Marc
--
Pengutronix e.K. | Marc Kleine-Budde |
Embedded Linux | https://www.pengutronix.de |
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