[ath9k-devel] ath9k (AR9485) failing with PCI errors after hours of uptime with current ath9k.ko from linux-wireless

[Joel Diaz <joeldiaz@earthlink.net>]

On Mon, 2013-05-13 at 06:29 -0700, Adrian Chadd wrote:
> On 13 May 2013 04:28, Joel Diaz <joeldiaz@earthlink.net> wrote:
> > On Wed, 2013-05-08 at 22:10 -0700, Adrian Chadd wrote:
> >> No, I mean - there's an iw command to disable entering power save on
> >> your linux station. Find that and disable it.
> >>
> > It has now been running for about 4 and half days without seeing the
> > wireless connection drop after the 'iw dev wlan0 set power_save off'. I
> > hope it's not premature to say thanks, as this is the longest I've seen
> > it go without a failure.
> >
> > I'm not at all familiar with the history behind why power saving needs
> > to be disabled (as this machine is a desktop, it's not terribly
> > important to me), but if there's any hope of having it fixed through
> > patches, I'd be more than willing to help out so other people don't have
> > to go through what I went through.
> 
> Hi!
> 
> please file a kernel.org bugzilla bug.
> 
I've updated the title and added the workaround to my previously opened
bugzilla ( https://bugzilla.kernel.org/show_bug.cgi?id=56301 ).

Joel

> There's two overarching possibilities:
> 
> * there's a driver bug (eg setting up DMA when the chip is asleep);
> trying to put the NIC to sleep during a DMA, etc;
> * that some PCIe quirk needs to be added to the ath9k driver to work
> around some oddities with PCie sleep state(s).
> 
> Thanks,
> 
> 
> 
> Adrian