[ath9k-devel] Overriding driver regdomain settings?

[Jost-Philip Matysik <matysik@tuhh.de>]

Hello List!

I am using the following USB wifi device:
ID 0846:9018 NetGear, Inc. WNDA3200 802.11abgn Wireless Adapter [Atheros AR7010+AR9280]

This uses the ath9k_htc driver.

Unfortunately a lot of channels I would like to use (and am allowed to
use in my country) are disabled, because the card defaults to the
wrong regulatory domain setting.

I have tried using a modified wireless-regdb and CRDA. This works
great with other cards, but the WNDA3200 ignores my regdb and continues
to use the wrong channels.

According to syslog, the card applies the "world" regulatory domain
(which will not let me use channels 100-146, and then ignores the
kernel's request to change to a different domain, because it has its
own system:

[ 3632.815645]cfg80211: Ignoring regulatory request Set by core since the driver uses
its own custom regulatory domain 
[ 3632.819324] ieee80211 phy5: Atheros AR9280 Rev:2
[ 3632.819905] Registered led device: ath9k_htc-phy5
[ 3632.819913] usb2-3: ath9k_htc: USB layer initialized

Is there any way to disable/change/override/modify this to get the
additional channels enabled?

If such a feature exists, is there documentation available about it
somewhere?

My preferred solution would be to tell the driver to use the kernel's
CRDA, so I would keep all modifications in a central place...

Thanks!

Regards,
Jost-Philip Matysik