linux-kernel - Re: [cfg80211 / iwlwifi] setting wireless regulatory domain doesn't work.

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Date:	Wed, 18 Dec 2013 09:58:52 +0100
From:	Arend van Spriel <arend@...adcom.com>
To:	Pontus Fuchs <pontus.fuchs@...il.com>,
	Sander Eikelenboom <linux@...elenboom.it>,
	Ben Hutchings <ben@...adent.org.uk>
CC:	Julian Calaby <julian.calaby@...il.com>,
	"Luis R. Rodriguez" <mcgrof@...not-panic.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"Berg, Johannes" <johannes.berg@...el.com>,
	"Grumbach, Emmanuel" <emmanuel.grumbach@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"ilw@...ux.intel.com" <ilw@...ux.intel.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
	"John W. Linville" <linville@...driver.com>,
	Avinash Patil <avinashapatil@...il.com>
Subject: Re: [cfg80211 / iwlwifi] setting wireless regulatory domain doesn't
 work.

On 12/18/2013 08:50 AM, Pontus Fuchs wrote:
> On 2013-12-17 22:49, Sander Eikelenboom wrote:
>>
>> Indeed, I looked for a crda hook for initramfs-tools but didn't find
>> it, so skipped that idea
>> for the moment.
>>
>> So if i combine the two .. it's essentially just a very bad idea to
>> compile the wireless stuff in.
>> It needs a access to a userland program at module load time, or it
>> will block forever.
> 
> The canonical trick to have cfg80211 built in is to execute crda
> manually in your boot scripts. This will satisfy the initial request and
> resolve the block.

There is a Kconfig option to have the regulatory data built-in the
kernel as well. Obviously that makes a regulatory update more difficult.

net/wireless/Kconfig:
config CFG80211_INTERNAL_REGDB
        bool "use statically compiled regulatory rules database" if EXPERT

Regards,
AvS

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