linux-kernel - Re: [PATCH] clk: Use a separate struct for holding init data.

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Date:	Wed, 2 May 2012 12:11:32 +0200
From:	Sascha Hauer <s.hauer@...gutronix.de>
To:	Russell King - ARM Linux <linux@....linux.org.uk>
Cc:	Saravana Kannan <skannan@...eaurora.org>,
	Mike Turquette <mturquette@...aro.org>,
	Arnd Bergman <arnd.bergmann@...aro.org>,
	linux-arm-kernel@...ts.infradead.org, Andrew Lunn <andrew@...n.ch>,
	Paul Walmsley <paul@...an.com>,
	Linus Walleij <linus.walleij@...ricsson.com>,
	Stephen Boyd <sboyd@...eaurora.org>,
	linux-arm-msm@...r.kernel.org,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Magnus Damm <magnus.damm@...il.com>,
	linux-kernel@...r.kernel.org,
	Rob Herring <rob.herring@...xeda.com>,
	Richard Zhao <richard.zhao@...aro.org>,
	Grant Likely <grant.likely@...retlab.ca>,
	Deepak Saxena <dsaxena@...aro.org>,
	Amit Kucheria <amit.kucheria@...aro.org>,
	Jamie Iles <jamie@...ieiles.com>,
	Jeremy Kerr <jeremy.kerr@...onical.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Shawn Guo <shawn.guo@...escale.com>
Subject: Re: [PATCH] clk: Use a separate struct for holding init data.

On Wed, May 02, 2012 at 11:02:25AM +0100, Russell King - ARM Linux wrote:
> > 
> > There is a mux->hw.init = &init missing here.
> 
> What happens to mux->hw.init long term?  Because once this function
> returns, that pointer will no longer be valid.

It's not used after clk_register, so everything should be fine.

> It would be a good
> idea to NULL it out in clk_register() once its done with, to ensure
> that no one comes up with the idea of using it later.

Enforcing this is a good idea.

Sascha

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