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Re: [PATCH] rfkill: Regulator consumer driver for rfkill

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On Wed, 2011-04-06 at 20:12 +0200, Paul Bolle wrote:
> On Wed, 2011-04-06 at 16:21 +0200, Johannes Berg wrote:
> > On Wed, 2011-04-06 at 23:11 +0900, Mark Brown wrote:
> > > On Wed, Apr 06, 2011 at 11:21:19AM +0200, Antonio Ospite wrote:
> > > 
> > > > +	tristate "Generic rfkill regulator driver"
> > > > +	depends on RFKILL || !RFKILL
> > > 
> > > That looks *odd*.
> > 
> > That's normal for rfkill -- if RFKILL==n then this can be anything since
> > the rfkill API goes all no-op inlines, but if RFKILL==m then this can't
> > be ==y. "depends on !RFKILL" covers the former, "depends on RFKILL" the
> > latter.
> 
> But doesn't
> 	depends on RFKILL || !RFKILL
> 
> always evaluate to true when running "make *config"? (Even if RFKILL is
> an unknown symbol when that expression is parsed!)

No, it will not, you're forgetting that these things are tristate.

johannes

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