linux-kernel - Re: [PATCH 9/9] ARM: pxa27x: device tree support ICP DAS LP-8x4x

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Date:	Mon, 09 Dec 2013 19:55:30 +0400
From:	Sergei Ianovich <ynvich@...il.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Daniel Mack <zonque@...il.com>,
	Olof Johansson <olof@...om.net>,
	Linus Walleij <linus.walleij@...aro.org>,
	Rob Herring <rob.herring@...xeda.com>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Stephen Warren <swarren@...dotorg.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Russell King <linux@....linux.org.uk>,
	Eric Miao <eric.y.miao@...il.com>,
	Haojian Zhuang <haojian.zhuang@...il.com>,
	"open list:OPEN FIRMWARE AND..." <devicetree@...r.kernel.org>,
	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>
Subject: Re: [PATCH 9/9] ARM: pxa27x: device tree support ICP DAS LP-8x4x

On Mon, 2013-12-09 at 19:16 +0400, Sergei Ianovich wrote:
> On Mon, 2013-12-09 at 02:47 +0100, Arnd Bergmann wrote:
> > On Sunday 08 December 2013, Sergei Ianovich wrote:
> > > +
> > > +#ifdef CONFIG_PXA27x
> > > +extern void __init pxa27x_dt_init_irq(void);
> 
> > > +static void __init pxa27x_init_early(void)
> > > +{
> > > +     pxa27x_skip_init();
> > > +}
> > 
> > I would prefer not to have an init_early function at all, and instead
> > check "if (of_have_populated_dt())" in pxa27x_init, or to split
> > that function into two.

Although this is counterintuitive, it works. Since of_populate_dt() is
not required for of_have_populated_dt() to return true, should we rename
of_have_populated_dt() to of_have_dt()?

> Device tree is populated in init_machine. However, pxa27x_init is
> executed before via postcore_initcall. The only chance to run before is
> to use init_early. What's wrong with this function?

I was wrong.

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