Re: Gianfar driver failing on MPC8641D based board

[Martyn Welch]

Paul Gortmaker wrote:
> On 10-02-26 09:35 AM, Anton Vorontsov wrote:
>   
>> On Fri, Feb 26, 2010 at 12:06:15PM +0000, Martyn Welch wrote:
>>     
>>> Anton Vorontsov wrote:
>>>       
>>>> On Thu, Feb 25, 2010 at 07:53:30PM -0500, Paul Gortmaker wrote:
>>>> [...]
>>>>
>>>>         
>>>>> I was able to reproduce it on an 8641D and bisected it down to this:
>>>>>
>>>>> -----------
>>>>> commit a3bc1f11e9b867a4f49505ecac486a33af248b2e
>>>>> Author: Anton Vorontsov<avorontsov@xxxxxxxxxxxxx>
>>>>> Date:   Tue Nov 10 14:11:10 2009 +0000
>>>>>
>>>>>      gianfar: Revive SKB recycling
>>>>>
>>>>>           
>>>> Thanks for the bisect. I have a guess why tx hangs in
>>>> SMP case. Could anyone try the patch down below?
>>>>
>>>>         
>>> Yup, no problem. I'm afraid it doesn't resolve the problem for me.
>>>       
>> Hm.. I found a p2020 board and I was able to reproduce the issue.
>> The patch down below fixed it completely for me... hm.
>>     
>
> Interesting. I just tested the patch on the sbc8641d, and it
> still has the issue with your patch applied.  I'm using NFSroot
> just like Martyn was and it still appears bound up on that
> gianfar tx lock.  I'll see if I can get a SysRq backtrace in
> case that will help you see how it manages to get there...
>   

I've got a p2020ds here as well, so I'll give NFSroot on that a try with
your patch.

Martyn



-- 
Martyn Welch (Principal Software Engineer)   |   Registered in England and
GE Intelligent Platforms                     |   Wales (3828642) at 100
T +44(0)127322748                            |   Barbirolli Square, Manchester,
E martyn.welch@xxxxxx                        |   M2 3AB  VAT:GB 927559189

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/