Gilles Chanteperdrix wrote:
> Jan Kiszka wrote:
>> Gilles Chanteperdrix wrote:
>>> Wolfgang Grandegger wrote:
>>>> Gilles Chanteperdrix wrote:
>>>>> Jan Kiszka wrote:
>>>>>> Gilles Chanteperdrix wrote:
>>>>>>> * rtcan: on blackfin we seem to have a conflict with rtcan.
>>>>>>> The warning is about CAN_ERR_MASK, sure blackfin is a bit strange to
>>>>>>> define this in core headers which are included everywhere. This said,
>>>>>>> not prefixing a Xenomai symbol with something like XN seems to be asking
>>>>>>> for trouble. Wolfgang, do you think it would be possible to rename the
>>>>>>> symbols with such prefix? Or do you share some code with socket-can that
>>>>>>> you do not want to touch?
>>>>>> CAN_ERR_MASK is part of the Socket-CAN interface (include/linux/can.h),
>>>>>> it must not be called differently. Blackfin is obviously doing namespace
>>>>>> pollution which should be fixed upstream and meanwhile worked around in
>>>>>> Xenomai (e.g. via #undef CAN_ERR_MASK).
>>>>> Ok. But according to the build logs, it is redefined in rtdm/rtcan.h.
>>>>> The error seems to have been fixed upstream, since we get this warning
>>>>> with 2.6.30 and not with 2.6.31.
>>>> Right, the error comes from:
>>>>
>>>> http://lxr.linux.no/#linux+v2.6.32/arch/blackfin/mach-bf537/include/mach/bf537.h#L20
>>>>
>>>> and is in conflict with "include/linux/can/can.h" anyhow.
>>> Ok, ok. My question was about rtdm/rtcan.h redefining what is already
>>> defined in linux/can.h. Would not it make sense to include linux/can.h
>>> instead? Of course, this is not something that needs fixing right now,
>>> but would be better on the long run.
>> Right. We just need to take care for pre-CAN kernels.
> 
> In wrappers.h, as we do for every other variation of the kernel interface.

Yes, I'm going to work on RT-Socket-CAN soon anyhow.

Wolfgang.


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