linux-kernel - Re: [PATCH] asm-generic/io.h: remove asm/cacheflush.h include

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Message-Id: <201210251407.27145.arnd@arndb.de>
Date:	Thu, 25 Oct 2012 14:07:26 +0000
From:	Arnd Bergmann <arnd@...db.de>
To:	Jonas Bonn <jonas@...thpole.se>
Cc:	James Hogan <james.hogan@...tec.com>, linux-arch@...r.kernel.org,
	linux@...ts.openrisc.net, linux-kernel@...r.kernel.org,
	uclinux-dist-devel@...ckfin.uclinux.org,
	linux-xtensa@...ux-xtensa.org, Chris Zankel <chris@...kel.net>,
	Max Filippov <jcmvbkbc@...il.com>,
	Mike Frysinger <vapier@...too.org>,
	Chen Liqin <liqin.chen@...plusct.com>,
	Lennox Wu <lennox.wu@...il.com>,
	Guan Xuetao <gxt@...c.pku.edu.cn>
Subject: Re: [PATCH] asm-generic/io.h: remove asm/cacheflush.h include

On Thursday 25 October 2012, Jonas Bonn wrote:
> On Tue, 2012-10-23 at 10:21 +0100, James Hogan wrote:
> > Including <asm/cacheflush.h> from <asm-generic/io.h> prevents
> > cacheflush.h being able to use I/O functions like readl and writel due
> > to circular include dependencies. It doesn't appear as if anything from
> > cacheflush.h is actually used by the generic io.h, so remove the
> > include.
> > 
> > I've compile tested a defconfig compilation of blackfin, openrisc (which
> > needed <asm/pgtable.h> including from it's <asm/io.h> to get the PAGE_*
> > definitions), and xtensa.
> > 
> > Other architectures which use asm-generic/io.h are score and unicore32,
> > and looking at their io.h I don't see any obvious problems.
> 
> Acked-by: Jonas Bonn <jonas@...thpole.se> for OpenRISC
> 
> Who's tree should this go via.  I can take it via the openrisc tree, but
> it would be good to get some Ack's that this isn't going to break things
> for the other arch's (in particular score and unicore32, since they are
> untested).

I've put it into the asm-generic tree, now that I have set it up again
for the 3.7 merge window.

	Arnd
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