linux-kernel - Re: [PATCH] clk: Fix race conditions between clk_set_parent() and clk

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Message-ID: <CACRpkda94B1JDC0T8eafBkHDg8JFy19OAH3NgGZRBLA28i9iRQ@mail.gmail.com>
Date:	Wed, 16 May 2012 09:30:30 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	"Turquette, Mike" <mturquette@...com>
Cc:	Saravana Kannan <skannan@...eaurora.org>,
	Arnd Bergman <arnd.bergmann@...aro.org>,
	linux-arm-kernel@...ts.infradead.org, Andrew Lunn <andrew@...n.ch>,
	Paul Walmsley <paul@...an.com>,
	Russell King <linux@....linux.org.uk>,
	Linus Walleij <linus.walleij@...ricsson.com>,
	Stephen Boyd <sboyd@...eaurora.org>,
	linux-arm-msm@...r.kernel.org,
	Sascha Hauer <s.hauer@...gutronix.de>,
	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: Fix race conditions between clk_set_parent() and clk_enable()

On Wed, May 16, 2012 at 8:00 AM, Turquette, Mike <mturquette@...com> wrote:

> The above hunk is a good change since it fixes a bug where we
> prepare/enable the parent clocks around the .set_parent callback, even
> when CLK_SET_PARENT_GATE is set.  It should be a separate patch.

This makes me think that maybe some of these clk fixes really
need to add Cc: stable@...nel.org so they get into 3.4 as well.

Not that there are plenty of in-kernel users, but since people may
be basing development off the 3.4 tree, it would be good to have
fixes propagate there.

Linus Walleij
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