Wolfgang Grandegger wrote:
>> Now I try to use more current version (rev 1181) of SocketCAN, because we 
>> need netlink CAN control API. Here I see one problem - no error active is 
>> indicated. The CAN_ERR_CRTL_UNSPEC error control messages are missed. 
>> I observe this problem with both sysfs and netlink variants.
>>
>>
>> Is it known and wanted behavior, to not indicate CAN_ERR_CRTL_UNSPEC any 
>> more?
> 
> Yes, this is the current (known) behavior and it has been discussed
> before. We only report "increasing" state changes
> active->warning->passive->bus-off. I think it's not what we really want.
> It should be fixed.

Have a look at the statemachine in the at91_can driver[1]. I started to
make it more generic in order to be usable as a generic component.

Cheers, Marc

[1] http://lxr.linux.no/#linux+v2.6.34/drivers/net/can/at91_can.c#L757
-- 
Pengutronix e.K.                  | Marc Kleine-Budde           |
Industrial Linux Solutions        | Phone: +49-231-2826-924     |
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