From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sascha Hauer <s.hauer@pengutronix.de>
Subject: Re: [PATCH] clk: Fix race conditions between clk_set_parent() and
 clk_enable()
Date: Tue, 15 May 2012 22:00:40 +0200
Message-ID: <20120515200040.GP30400@pengutronix.de>
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To: Saravana Kannan <skannan@codeaurora.org>
Cc: Andrew Lunn <andrew@lunn.ch>, Paul Walmsley <paul@pwsan.com>, Mike Turquette <mturquette@linaro.org>, Linus Walleij <linus.walleij@stericsson.com>, Stephen Boyd <sboyd@codeaurora.org>, linux-arm-msm@vger.kernel.org, Mark Brown <broonie@opensource.wolfsonmicro.com>, Magnus Damm <magnus.damm@gmail.com>, linux-kernel@vger.kernel.org, Rob Herring <rob.herring@calxeda.com>, Richard Zhao <richard.zhao@linaro.org>, Grant Likely <grant.likely@secretlab.ca>, Deepak Saxena <dsaxena@linaro.org>, Thomas Gleixner <tglx@linutronix.de>, Shawn Guo <shawn.guo@freescale.com>, Amit Kucheria <amit.kucheria@linaro.org>, Jamie Iles <jamie@jamieiles.com>, Russell King <linux@arm.linux.org.uk>, Arnd Bergman <arnd.bergmann@linaro.org>, Jeremy Kerr <jeremy.kerr@canonical.com>, linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-msm@vger.kernel.org

On Tue, May 15, 2012 at 12:51:06PM -0700, Saravana Kannan wrote:
> >>  	ret = clk->ops->set_parent(clk->hw, i);
> >
> >You call ->set_parent while holding a spinlock. This won't work with i2c
> >clocks.
> 
> I did account for that. I explained it in the commit text. Please
> let me know if any part of that is not clear or is not correct.
>

I missed this part in the commit log. I have no idea whether we can live
with this limitation though.

Sascha

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