linux-kernel - Re: [PATCH] PM / devfreq: Rewrite devfreq_update

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Message-ID: <53151FE8.70703@codeaurora.org>
Date:	Mon, 03 Mar 2014 16:35:52 -0800
From:	Saravana Kannan <skannan@...eaurora.org>
To:	Saravana Kannan <skannan@...eaurora.org>
CC:	MyungJoo Ham <myungjoo.ham@...sung.com>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-msm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] PM / devfreq: Rewrite devfreq_update_status() to fix
 multiple bugs

On 02/27/2014 07:38 PM, Saravana Kannan wrote:
> The current devfreq_update_status() has the following bugs:
> - If previous frequency doesn't have a valid level, it does an out of bounds
>    access into the trans_table and causes memory corruption.
> - When the new frequency doesn't have a valid level, the time spent in the
>    new frequency is counted towards the next valid frequency switch instead of
>    being ignored.
> - The time spent on the previous frequency is added to the new frequency's
>    stats instead of the previous frequency's stats.
>
> This patch fixes all of this.
>
> Signed-off-by: Saravana Kannan <skannan@...eaurora.org>
> ---

MyungJoo/Kyungmin,

Can you please take a look and let me know if this looks ok? Any 
possibility of getting this into 3.14?

Thanks,
Saravana

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