Subject: Re: [PATCH] rfkill: Regulator consumer driver for rfkill
From: Johannes Berg <johannes@sipsolutions.net>
To: Paul Bolle <pebolle@tiscali.nl>
Cc: "John W. Linville" <linville@tuxdriver.com>,
	Mark Brown <broonie@opensource.wolfsonmicro.com>,
	Antonio Ospite <ospite@studenti.unina.it>,
	linux-wireless@vger.kernel.org, openezx-devel@lists.openezx.org,
	Liam Girdwood <lrg@slimlogic.co.uk>,
	linux-kernel@vger.kernel.org, Marek Vasut <marek.vasut@gmail.com>,
	Guiming Zhuo <gmzhuo@gmail.com>
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Date: Wed, 06 Apr 2011 22:15:22 +0200
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On Wed, 2011-04-06 at 22:10 +0200, Paul Bolle wrote:
> On Wed, 2011-04-06 at 14:38 -0400, John W. Linville wrote:
> > The syntax may seem strange,
> 
> It does!
> 
> > but basically it just says "don't let me by y if RFKILL is m"
> 
> ... but, besides that, I can be any value. So in effect it's shorthand
> for
> 	depends on RFKILL=y || RFKILL=m && m || RFKILL=n
> 
> (which actually looks equally strange). Is that correct?

I don't think it is, I believe that an expression like "RFKILL=y" has a
bool type, and a tristate type value that depends on a bool type can
still take the value m.

johannes