linux-kernel - Re: ath5k - strange regulatory domain change

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Message-ID: <43e72e890908071051w1f306349rfab32de80759006e@mail.gmail.com>
Date:	Fri, 7 Aug 2009 10:51:17 -0700
From:	"Luis R. Rodriguez" <mcgrof@...il.com>
To:	Frans Pop <elendil@...net.nl>
Cc:	"John W. Linville" <linville@...driver.com>,
	Chris Clayton <chris2553@...glemail.com>,
	linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: ath5k - strange regulatory domain change

On Fri, Aug 7, 2009 at 10:39 AM, Frans Pop<elendil@...net.nl> wrote:
> On Friday 07 August 2009, you wrote:
>> The way the EEPROM was programmed for this type of
>> regulatory domain was to give you a group number under which other
>> countries fall under. If you ended up getting a direct alpha2
>> programmed in the EEPROM instead you would still end up matching the
>> alpha2 to a group number. The group number leads you to a regulatory
>> domain that all those countries in that group number adhere to. So it
>> was a way to group up regulatory domain rules between countries. The
>> "CN" you see just so happens to be the alpha2 for the first country in
>> the same group regulatory domain group.
>>
>> What we can do is to elaborate on that on the dmesg and also maybe
>
> That would be very welcome.
>
>> pick the most common country on the group so it will tend to match the
>> country users are on.
>
> I think that would just be moving the problem from one group of users to
> another, possibly only marginally smaller, group of users.
>
> As far as I can see the largest group is ETSI1_WORLD and contains 33
> countries, followed by NULL1_WORLD (is that a real group?) with 22.
> That's probably too many to list them all.
> OTOH, all other groups contain at most 7 countries, which could possibly
> be listed.
>
> Probably the simplest option would be to just display some identification
> of the domain group itself and point users to documentation which
> explains what countries fall under what groups. That would at least avoid
> the confusion caused by randomly picking a matching country.
> Variation could be to display the country if the group only contains one
> country, but that could also be considered an inconsistent user
> interface.

Or maybe see if the currently set regulatory domain matches an alpha2
in the group, if so then just display the same alpha2. Will take a
look.

  Luis
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