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Re: ath9k stops working (DMA trouble?) shortly after going online

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On Thu, Jun 7, 2012 at 3:04 PM, Tvrtko Ursulin
<tvrtko.ursulin@xxxxxxxxxxxx> wrote:
> On Tuesday 29 May 2012 13:12:33 Sujith Manoharan wrote:
>> > 118.779362 - 118.795238 (WARN_ON WARNING: at
>> > drivers/net/wireless/ath/ath9k/recv.c:531 ath_stoprecv+0x118/0x130
>> > [ath9k]())
>> >
>> > 524.162432 - 524.753750
>> > 1544.610658 - 1550.218324
>> > 1685.668241 - 1686.991166
>> > 1773.268867 - 1804.465933
>> >
>> > Hope this helps?
>>
>> Yes !
>>
>> Here are a couple of patches to help narrow down the issue.
>>
>> http://sujith.github.com/patches/wl/0001-ath9k-Add-some-debug-messages.patc
>> h
>> http://sujith.github.com/patches/wl/0002-ath9k-Resync-beacons-after-a-rese
>> t.patch
>>
>> The first one adds some messages, the second sets up beacons properly in
>> case a HW reset happens. Can you try these and post the log ?
>>
>> If you are willing to move to a more recent kernel, then current
>> wireless-testing would be a good choice since it has various driver fixes.
>> There are a few pending ath9k patches which have not been merged yet, you
>> can find it here:
>>
>> http://sujith.github.com/patches/wl/wl-ath9k-May-29-2012.patch
>
> For the record, we swapped the mini PCI card to a different one of the same
> model and now it seems to work fine. Could you imagine a hardware fault or
> tolerance issue causing such errors?
>

could be, i  shorted a resistor in one of the chips for some reason
and saw some Failed to stop DMA issues(well the chip
was not working at all)


-- 
thanks,
shafi
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