linux-kernel - Re: [PATCH 2/2] iomap: make IOPORT/PCI mapping functions conditional

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Message-Id: <201107022215.47324.arnd@arndb.de>
Date:	Sat, 2 Jul 2011 22:15:47 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Jonas Bonn <jonas@...thpole.se>
Cc:	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org
Subject: Re: [PATCH 2/2] iomap: make IOPORT/PCI mapping functions conditional

On Saturday 02 July 2011 21:54:26 Jonas Bonn wrote:
> On Sat, 2011-07-02 at 21:46 +0200, Arnd Bergmann wrote:
> > On Saturday 02 July 2011 17:53:26 Jonas Bonn wrote:
> > > Use the CONFIG_HAS_IOPORT and CONFIG_PCI options to decide whether or
> > > not functions for mapping these areas are provided.
> > > 
> > > Signed-off-by: Jonas Bonn <jonas@...thpole.se>
> > 
> > Good catch!
> > 
> > Acked-by: Arnd Bergmann <arnd@...db.de>
> > 
> > Did you get a build error without the two options, or did you just have an
> > idea to save a bit of code size?
> > 
> 
> There was no build error; I just figured it would aid in debugging if
> you got a compile-time error when trying to build drivers that use these
> functions for a platform that lacked them.  Smaller code is always nice,
> too.

Right. Did you also see the related discussion at
http://lkml.org/lkml/2011/7/1/422 ?

	Arnd
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