linux-kernel - Re: [PATCH 2/6] clk: tegra: make tegra_clocks_apply_init_table arch

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Message-ID: <20140716082740.GK23218@tbergstrom-lnx.Nvidia.com>
Date:	Wed, 16 Jul 2014 11:27:40 +0300
From:	Peter De Schrijver <pdeschrijver@...dia.com>
To:	Thierry Reding <thierry.reding@...il.com>
CC:	Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Stephen Warren <swarren@...dotorg.org>,
	Russell King <linux@....linux.org.uk>,
	Prashant Gaikwad <pgaikwad@...dia.com>,
	Mike Turquette <mturquette@...aro.org>,
	Joseph Lo <josephl@...dia.com>,
	Alex Courbot <acourbot@...dia.com>,
	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
	Tuomas Tynkkynen <ttynkkynen@...dia.com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 2/6] clk: tegra: make tegra_clocks_apply_init_table
 arch_initcall

On Wed, Jul 16, 2014 at 09:19:33AM +0200, Thierry Reding wrote:
> * PGP Signed by an unknown key
> 
> On Tue, Jul 15, 2014 at 06:24:32PM +0300, Peter De Schrijver wrote:
> [...]
> > diff --git a/drivers/clk/tegra/clk.c b/drivers/clk/tegra/clk.c
> > index d081732..65cde4e 100644
> > --- a/drivers/clk/tegra/clk.c
> > +++ b/drivers/clk/tegra/clk.c
> > @@ -290,10 +290,13 @@ struct clk ** __init tegra_lookup_dt_id(int clk_id,
> >  
> >  tegra_clk_apply_init_table_func tegra_clk_apply_init_table;
> >  
> > -void __init tegra_clocks_apply_init_table(void)
> > +static int __init tegra_clocks_apply_init_table(void)
> >  {
> >  	if (!tegra_clk_apply_init_table)
> > -		return;
> > +		return 0;
> 
> Shouldn't this be an error? Or perhaps WARN()? To make sure this gets

An arch_initcall will be called for every ARM platform I think? In case
this gets called on a non-Tegra platform, tegra_clk_apply_init_table will not
be set and therefore a silent return 0; seems the most appropriate thing to do
to me?

Cheers,

Peter.
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