[ath9k-devel] ath9k causes lockups since kernel 2.6.35

[Tony Houghton <h@realh.co.uk>]

On Wed, 8 Jun 2011 07:22:04 +0800
Adrian Chadd <adrian@freebsd.org> wrote:

> On 8 June 2011 04:54, Tony Houghton <h@realh.co.uk> wrote:
> 
> > My bisect log showed the last "good" commit was
> > d5cdfacb35ed886271d1ccfffbded98d3447da17 and the first "bad"
> > 53bc7aa08b48e5cd745f986731cc7dc24eef2a9f.
> >
> > I tested those again and it seemed to confirm the initial finding.
> > With the "good" one I suspended/resumed at least twice, did rmmod
> > ath9k at least twice, and disabled wireless with NetworkManager,
> > all without incident. The "bad" one crashed the first time I tried
> > rmmod ath9k.
> 
> Ok. Let's try the patches in turn, ok?
> 
> Go back to the first good commit, then apply the patch to reg.h to
> pick up the change to AR9285_WA_DEFAULT.
> Then test with that.
> 
> The only change in your tree should be to reg.h:
> 
> http://git390.marist.edu/cgi-bin/gitweb.cgi?p=linux-2.6.git;a=blobdiff;f=drivers/net/wireless/ath/ath9k/reg.h;h=7e36ad7421b77f6464c8bc810c9b1276209fe329;hp=198e41dd38a6142e232a22807d665f78dbecae72;hb=53bc7aa08b48e5cd745f986731cc7dc24eef2a9f;hpb=d5cdfacb35ed886271d1ccfffbded98d3447da17

Right, it did crash with this patch. This time I was able to rmmod ath9k
once but it crashed on rmload ath9k. I also had a freeze while booting
up. That was on AC power. With this version, running on battery power
seems to greatly reduce the chances of a crash, if not prevent it
altogether. I had noticed this on previous stock kernels, but recent
ones crash on battery power too.