From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Wed, 22 Jan 2014 14:30:53 +0100
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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Subject: Re: [Xenomai] imx28 rtcan flexcan system freezes
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To: Alexandre COFFIGNAL <acoffignal@geral.com>
Cc: xenomai@xenomai.org

On 01/22/2014 02:27 PM, Alexandre COFFIGNAL wrote:
>
> Le 22/01/2014 13:00, Gilles Chanteperdrix a écrit :
>> On 01/22/2014 12:36 PM, Alexandre COFFIGNAL wrote:
>>>>> +        cf->data[3]=((data0 >> 0)  & 0xFF) ;
>>>>> +        cf->data[2]=((data0 >> 8)  & 0xFF) ;
>>>>> +        cf->data[1]=((data0 >> 16)  & 0xFF) ;
>>>>> +        cf->data[0]=((data0 >> 24)  & 0xFF) ;
>>>>> +        cf->data[7]=((data1 >> 0)  & 0xFF) ;
>>>>> +        cf->data[6]=((data1 >> 8)  & 0xFF) ;
>>>>> +        cf->data[5]=((data1 >> 16)  & 0xFF) ;
>>>>> +        cf->data[4]=((data1 >> 24)  & 0xFF) ;
>>>>>
>>>>> rtcan flexcan works perfectly.
>>>>> is  anyone know what is the problem with first instructions ?
>>>> Probably mb->data does not have the right alignment. Could you not
>>>> arrange to get it properly aligned? Failing that, you should use
>>>> put_unaligned instead of open coding it.
>>>>
>>>>
>>> here structures used in flexcan driver, it seem to be aligned
>>
>> I am talking about the alignment of cf->data, since obviously, that is
>> the one which is causing problems.
>>
>>
> Thank a lot, put_unaligned fix this issue if you want, i can send a path
>

The other solution (getting cf->data to be properly aligned) would be 
more efficient, why is not it possible to get cf->data properly aligned?

-- 
					    Gilles.