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From: Al Viro <viro@ftp.linux.org.uk>
To: Tejun Heo <htejun@gmail.com>
Cc: 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] iomap: make PCI iomap stuff excluded when PCI isn't configured
Date: Sun, 11 Feb 2007 05:20:45 +0000	[thread overview]
Message-ID: <20070211052045.GQ10050@ftp.linux.org.uk> (raw)
In-Reply-To: <45CE43B5.2020806@gmail.com>

On Sat, Feb 10, 2007 at 05:14:13PM -0500, Tejun Heo wrote:
> Heiko Carstens wrote:
> >On Sat, Feb 10, 2007 at 12:43:16PM -0500, Tejun Heo wrote:
> \>> Heiko, how about this?  Does it fix s390?
> >
> >Unfortunately not. Now I get
> >
> >  CC      lib/iomap.o
> >lib/iomap.c: In function 'devm_ioport_map_release':
> >lib/iomap.c:270: warning: implicit declaration of function 'ioport_unmap'
> >lib/iomap.c: In function 'devm_ioport_map':
> >lib/iomap.c:297: warning: implicit declaration of function 'ioport_map'
> >lib/iomap.c:297: warning: assignment makes pointer from integer without a 
> >cast
> 
> I think an arch needs to support ioport_map/unmap and noncoherent dma 
> (just alias to coherent interface on x86/amd64) interface whether PCI is 
> implemented or not.  No?

Another source of breakage: you get devm_request_irq() only if you have
GENERIC_HARDIRQS.  Otherwise kernel/irq/ is simply not built.  Again,
you are mixing default implementation of primitives with the
implementation-agnostic stuff around those primitives.  I'd split
kernel/irq/manage.c in two files and have the places providing
alternative implementations (e.g. arch/sparc/kernel) refer to new
file in their makefiles...

I'm mostly done with that stuff, modulo noncoherent_dma breakage.  Will
send patch once the irq crap is dealt with...

  parent reply	other threads:[~2007-02-11  5:20 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-02-10 11:43 [patch] More defines for dma-mapping-broken.h Heiko Carstens
2007-02-10 17:43 ` [PATCH] iomap: make PCI iomap stuff excluded when PCI isn't configured Tejun Heo
2007-02-10 19:46   ` Heiko Carstens
2007-02-10 22:14     ` Tejun Heo
2007-02-10 22:25       ` Linus Torvalds
2007-02-10 22:50         ` Al Viro
2007-02-10 23:55           ` Al Viro
2007-02-11 16:45             ` Martin Schwidefsky
2007-02-11 18:15               ` Al Viro
2007-02-11  0:15       ` Heiko Carstens
2007-02-11  5:20       ` Al Viro [this message]
2007-02-11  2:41   ` Randy Dunlap
2007-02-11 15:49 ` [patch] More defines for dma-mapping-broken.h Jeff Garzik

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