linux-kernel - Re: [PATCH] cpufreq: exynos5440: Fix to skip when new frequency same as current

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Message-ID: <52022FC2.2010109@arm.com>
Date:	Wed, 07 Aug 2013 12:30:10 +0100
From:	Sudeep KarkadaNagesha <Sudeep.KarkadaNagesha@....com>
To:	Viresh Kumar <viresh.kumar@...aro.org>
CC:	Amit Daniel Kachhap <amit.daniel@...sung.com>,
	Kukjin Kim <kgene.kim@...sung.com>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	"linux-samsung-soc@...r.kernel.org" 
	<linux-samsung-soc@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Sudeep.KarkadaNagesha@....com
Subject: Re: [PATCH] cpufreq: exynos5440: Fix to skip when new frequency same
 as current

On 07/08/13 12:22, Viresh Kumar wrote:
> On 7 August 2013 16:46, Amit Daniel Kachhap <amit.daniel@...sung.com> wrote:
>> This patch fixes the issue of un-necessary setting the clock controller
>> when the new target frequency is same as the current one. This case usually
>> occurs with governors like ondemand which passes the target frequency as the
>> percentage of average frequency. This check is present in most of the cpufreq
>> driver.
>>
>> Cc: Viresh Kumar <viresh.kumar@...aro.org>
>> Cc: Rafael J. Wysocki <rjw@...k.pl>
>> Cc: Kukjin Kim <kgene.kim@...sung.com>
>> Signed-off-by: Amit Daniel Kachhap <amit.daniel@...sung.com>
>> ---
>>  drivers/cpufreq/exynos5440-cpufreq.c |    3 +++
>>  1 files changed, 3 insertions(+), 0 deletions(-)
> 
> Applied.
Hi Viresh,

Any particular reason we need this check in all drivers after your
commit: 5a1c0228 "cpufreq: Avoid calling cpufreq driver's target()
routine if target_freq == policy->cur"

I think it can removed from all drivers, am I missing something ?

Regards,
Sudeep


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