linux-kernel - Re: [PATCH 01/24] ARM: shmobile: use _

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Message-ID: <20120918115038.GB3198@verge.net.au>
Date:	Tue, 18 Sep 2012 20:50:38 +0900
From:	Simon Horman <horms@...ge.net.au>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Will Deacon <will.deacon@....com>,
	Russell King <rmk+kernel@....linux.org.uk>,
	Nicolas Pitre <nico@...aro.org>,
	Magnus Damm <magnus.damm@...il.com>,
	Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>,
	Paul Mundt <lethal@...ux-sh.org>, linux-sh@...r.kernel.org
Subject: Re: [PATCH 01/24] ARM: shmobile: use __iomem pointers for MMIO

On Tue, Sep 18, 2012 at 08:31:06AM +0000, Arnd Bergmann wrote:
> On Tuesday 18 September 2012, Simon Horman wrote:
> > On Fri, Sep 14, 2012 at 11:34:29PM +0200, Arnd Bergmann wrote:
> > > ARM is moving to stricter checks on readl/write functions,
> > > so we need to use the correct types everywhere.
> > > 
> > > This patch is a bit ugly for shmobile, which is the only platform
> > > that just uses integer literals all over the place, but I can't
> > > see a better way to do this.
> > > 
> > > Cc: Magnus Damm <magnus.damm@...il.com>
> > > Cc: Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
> > > Cc: Simon Horman <horms@...ge.net.au>
> > > Cc: Paul Mundt <lethal@...ux-sh.org>
> > > Cc: linux-sh@...r.kernel.org
> > > Signed-off-by: Arnd Bergmann <arnd@...db.de>
> > 
> > Wow, thats a lot of chrun, but if we must
> > 
> > Acked-by: Simon Horman <horms@...ge.net.au>
> > 
> 
> I agree it's not nice to have to do this, but this is largely because
> of shmobile doing things differently from all other ARM platforms, on
> which the respective patches tend to clean up things and reduce the
> number of type casts.
> 
> The only alternative I can see is for shmobile to introduce its own
> mach/io.h file with the relaxed type checking, but that would only
> defer the problem until the point where you want shmobile to be part
> of the common multiplatform kernel binary.

If it is needed in the long term, then I'm happy with it going in now.
Could you remove the portion that Paul objected to?
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