[ath9k-devel] ath9k: DMA failed to stop in 10 ms

[Luis R. Rodriguez <lrodriguez@atheros.com>]

On Fri, Nov 13, 2009 at 08:22:57AM -0800, Neil Wilson wrote:
> 2009/11/12 Johannes Stezenbach <js@sig21.net>:
> > On Thu, Nov 12, 2009 at 10:14:06AM -0800, Luis R. Rodriguez wrote:
> >> On Thu, Nov 12, 2009 at 10:13 AM, Luis R. Rodriguez <mcgrof@gmail.com> wrote:
> >> > On Thu, Nov 12, 2009 at 10:10 AM, Johannes Stezenbach
> >> >>> When running kismet I get a lot of
> >> >>>
> >> >>> [ 2030.531809] ath9k: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x00000020
> >> >>
> 
> I get this issue a lot in normal operation and it hangs the driver
> completely. So much so that I can't reload the module after unloading
> it.
> 
> For me its a real problem.

Can you compile wireless-testing and enable full debugging on ath9k?

modprobe ath9k debug=0xffffff

and see if you can capture a few lines around the "DMA failed to stop".

See:

http://wireless.kernel.org/en/users/Drivers/ath9k/debug

I'll see if I can get compat-wireless tested to enable debug if you
don't want to compile wireless-testing.

  Luis