On 2012-03-07 7:37 PM, Paul Farrow wrote:
> 
> On Wed, 07 Mar 2012 18:29:56 +0100, Felix Fietkau wrote:
>> On 2012-02-29 10:35 PM, Kim Lidström wrote:
>>> Hello!
>>> A while ago I had a situation where my AR9485 would lock up the 
>>> kernel
>>> so bad and two very nice guys(Mohammed Shafi and Adrian.. Uhm.. 
>>> Sorry I
>>> forgot his last name) were very patient in helping me and trying to
>>> debug it through patches, etc. Nothing worked.
>>> Eventually, though, I noticed that when I removed the atl1c module 
>>> my
>>> wlan started working. "Awesome!" I thought... Until I noticed this 
>>> other
>>> problem.
>>>
>>> Once in a while, seemingly at random, the wlan dies with the error
>>> messages in the title. And I can't possibly restore it without
>>> restarting the computer.
>>>
>>> With this message I have attached a log with the error messages.
>>> This has been a problem since.. Uhm.. Kernel 3.2.something and I'm
>>> currently running 3.2.8.
>>> For some reason it happened at least 3-4 times shortly after each 
>>> other
>>> today - so I thought I might ask on here what's happening.
>> Please try this patch with powersave enabled, using a recent
>> compat-wireless build (3.3 or linux-next based):
>> http://nbd.name/ps-fix.patch
>>
>> - Felix
>> _______________________________________________
>> ath9k-devel mailing list
>> ath9k-devel@lists.ath9k.org
>> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
> 
> 
> Hi Felix
> 
> I would like to try your patch to see if it stops my Tx DMA errors on 
> my AR9280 chipset pcie card.
> 
> 1. Do you think it might work?
> 2. What is the best way to apply this patch?
> 
> Please be gentle with me as I am linux hobbyist and I am keen to get my 
> Tx DMA error problem sorted which I can recreate straight away every 
> time.
If your Tx DMA issues are powersave related, this patch might help to
fix them.

- Felix
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