Seems to be happening with AR9285 in my HP laptop as well.

I was about to write a msg to this list with the same performance issues when 
I saw this thread.

Kunal

On Thursday 13 Aug 2009 10:51:54 am Sujith wrote:
> Pavel Roskin wrote:
> > sync_cause is always 0x2000 when that message is printed, so there are
> > no other causes.
>
> SYNC_LOCAL_TIMEOUT is generated when the PCIe core hangs, unable to
> complete a DMA transfer. I am able to see this with 9280, 9281 and 9287.
> So this seems to be a fundamental issue.
>
> Sujith
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