linux-kernel - Re: Deadlock scenario in regulator core

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Message-ID: <20110322224316.GA10841@opensource.wolfsonmicro.com>
Date:	Tue, 22 Mar 2011 22:43:17 +0000
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	David Collins <collinsd@...eaurora.org>
Cc:	Liam Girdwood <lrg@...mlogic.co.uk>, linux-arm-msm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: Deadlock scenario in regulator core

On Tue, Mar 22, 2011 at 03:02:01PM -0700, David Collins wrote:

> enable the parent regulator?  Likewise, is the lock around
> _notifier_call_chain required?

For this: we don't want the chain changing under us and the chain is
protected by the mutex.
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