[ath9k-devel] EEE PC with AR9280 using N mode with WPA2

[Jouni Malinen <jouni.malinen@atheros.com>]

On Tue, 2009-05-19 at 03:45 -0700, Gabor Juhos wrote:

> Ok, I will wait for the patches then.

I just submitted the patches and they are also available from
http://w1.fi/p/ps/

After implementing additional debugging functionality, I did find number
of issues with ath9k touching the hardware when in sleep mode. This did
include 0xdeadbeef reads, too, which seems to be the result of a
register read that should not have happened in the first place.. Anyway,
after these patches (on top of the previous PS fixes that are now in
wireless-testing.git), I have not seen that special value (or the
interrupt indicating such access) anymore.

Or well, I think it is still possible to get a somewhat similar case by
unloading the driver when in PS mode, but it does not seem to cause
problems at least with AR9280. If you are seeing crashes with this
version on an embedded board, I would be interested in getting more
details of the board and wlan version. And well, even hitting the
register read/write in sleep mode issue without a crash would be good
thing to report since the driver should not really trigger those in
general.

- Jouni