On Tue, 30 Nov 2010, Arnd Bergmann wrote:

quoted text
> On Tuesday 30 November 2010, Russell King - ARM Linux wrote:
> > No, the above is correct.  What I was talking about was the difference
> > between these:
> > 
> > config PCI
> >         bool "PCI support" if MIGHT_HAVE_PCI
> > 
> > and
> > 
> > config PCI
> >         bool "PCI support"
> >         depends on MIGHT_HAVE_PCI
> > 
> > In the first instance, PCI itself does not depend on MIGHT_HAVE_PCI.
> > MIGHT_HAVE_PCI controls whether the user is offered the "PCI support"
> > option.
> > 
> > In the second instance, PCI depends on MIGHT_HAVE_PCI, which must be
> > set to 'y' to offer the option and also if PCI is selected.
> 
> Right, I misread the patch as doing the wrong thing, thanks for
> clearing that up.
> 
> > We want the first behaviour.  Platforms which must have PCI support can
> > continue to select PCI as they currently do, and leave the MIGHT_HAVE_PCI
> > option alone.
> > 
> > Platforms which may optionally have PCI support should select
> > MIGHT_HAVE_PCI instead.
> 
> Yes, that sounds good.
> 
> 	Arnd
> 

OK.
I prepare some patch.

Ulli
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