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Date: Sun, 11 Feb 2007 08:21:59 +0000
From: Al Viro <viro@ftp.linux.org.uk>
To: Christoph Hellwig <hch@infradead.org>, Tejun Heo <htejun@gmail.com>,
       Heiko Carstens <heiko.carstens@de.ibm.com>,
       Andrew Morton <akpm@linux-foundation.org>,
       Linus Torvalds <torvalds@linux-foundation.org>,
       Martin Schwidefsky <schwidefsky@de.ibm.com>,
       Jeff Garzik <jgarzik@pobox.com>, linux-kernel@vger.kernel.org,
       linux-s390@vger.kernel.org
Subject: Re: [patch] linux/io.h: forward declare struct pci_dev
Message-ID: <20070211082159.GT10050@ftp.linux.org.uk>
References: <20070210114550.GC12642@osiris.boeblingen.de.ibm.com> <20070211034902.GA9077@infradead.org> <45CEB720.1020406@gmail.com> <20070211063431.GS10050@ftp.linux.org.uk> <20070211071047.GA3847@infradead.org>
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On Sun, Feb 11, 2007 at 07:10:47AM +0000, Christoph Hellwig wrote:
> On Sun, Feb 11, 2007 at 06:34:31AM +0000, Al Viro wrote:
> > +config NO_IOPORT
> > +	bool
> > +	default n
> 
> please make this IOPORT.  config symbols with an implicit negation
> are quite horrible for the brain to understand.

Take a look at lib/Kconfig.  And see HAS_IOPORT there.

The reason for doing it that way: majority of targets has that stuff
already.  Even more should have it eventually.  IOW, the default should
be positive.  Modified in arch/*/Kconfig of targets where it doesn't
work.  Which is exactly what's done here.