linux-kernel - Re: [PATCH 03/13] cpufreq: davinci: call CPUFREQ

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Message-ID: <51C172B3.5030806@ti.com>
Date:	Wed, 19 Jun 2013 14:28:27 +0530
From:	Sekhar Nori <nsekhar@...com>
To:	Viresh Kumar <viresh.kumar@...aro.org>
CC:	<rjw@...k.pl>, <linaro-kernel@...ts.linaro.org>,
	<patches@...aro.org>, <cpufreq@...r.kernel.org>,
	<linux-pm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<robin.randhawa@....com>, <Steve.Bannister@....com>,
	<Liviu.Dudau@....com>, <charles.garcia-tobin@....com>,
	<arvind.chauhan@....com>, <dave.martin@....com>
Subject: Re: [PATCH 03/13] cpufreq: davinci: call CPUFREQ_POSTCHANGE notfier
 in error cases

On 6/19/2013 2:22 PM, Viresh Kumar wrote:
> PRECHANGE and POSTCHANGE notifiers must be called in groups, i.e either both
> should be called or both shouldn't be.
> 
> In case we have started PRECHANGE notifier and found an error, we must call
> POSTCHANGE notifier with freqs.new = freqs.old to guarantee that sequence of
> calling notifiers is complete.
> 
> Davinci driver was taking care of it but frequency isn't restored to freqs.old.
> 
> This patch fixes it.
> 
> Cc: Sekhar Nori <nsekhar@...com>
> Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>

Looks good to me.

Acked-by: Sekhar Nori <nsekhar@...com>

Thanks,
Sekhar
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