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

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Message-id: <8984550.302431393927576253.JavaMail.weblogic@epv6ml05>
Date:	Tue, 04 Mar 2014 10:06:17 +0000 (GMT)
From:	MyungJoo Ham <myungjoo.ham@...sung.com>
To:	Saravana Kannan <skannan@...eaurora.org>,
	박경민 <kyungmin.park@...sung.com>
Cc:	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] PM / devfreq: Rewrite devfreq_update_status() to fix
 multiple bugs

> 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>

Merged.

It appears to be Greg's LTS material as well.


Cheers,
MyungJoo