linux-kernel - Re: [PATCH 1/2] cpufreq: return early from __cpufreq_driver

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Date:	Sat, 20 Oct 2012 12:39:50 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	pdsw-power-team@....com, linux-arm-kernel@...ts.infradead.org,
	linaro-dev@...ts.linaro.org, linux-pm@...r.kernel.org,
	cpufreq@...r.kernel.org, linux-kernel@...r.kernel.org,
	arvind.chauhan@....com, patches@...aro.org
Subject: Re: [PATCH 1/2] cpufreq: return early from __cpufreq_driver_getavg()

Re-sending, as it bounced from the lists :(
When i reply to mail from my Samsung S2, it replies in HTML format.
Don't know how to fix it :)

On 20 October 2012 10:12, Viresh Kumar <viresh.kumar@...aro.org> wrote:
>
> On Oct 20, 2012 3:37 AM, "Rafael J. Wysocki" <rjw@...k.pl> wrote:
>>
>> On Saturday 20 of October 2012 01:42:05 Viresh Kumar wrote:
>> > There is no need to do cpufreq_get_cpu() and cpufreq_put_cpu() for
>> > drivers that
>> > don't support getavg() routine.
>> >
>> > Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
>>
>> The patch doesn't seem to follow the changelog or the other way around.
>
> Sorry if my log isn't clear enough.
> But i could still see it matching the code :)
>
> I have moved the check for drivers capabilities at the top
> of routine, so that there is no need to call mentioned routines.
>
>>
>> Thanks,
>> Rafael
>>
>>
>> > ---
>> >  drivers/cpufreq/cpufreq.c | 6 ++++--
>> >  1 file changed, 4 insertions(+), 2 deletions(-)
>> >
>> > diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
>> > index 85df538..f552d5f 100644
>> > --- a/drivers/cpufreq/cpufreq.c
>> > +++ b/drivers/cpufreq/cpufreq.c
>> > @@ -1511,12 +1511,14 @@ int __cpufreq_driver_getavg(struct
>> > cpufreq_policy *policy, unsigned int cpu)
>> >  {
>> >       int ret = 0;
>> >
>> > +     if (!(cpu_online(cpu) && cpufreq_driver->getavg))
>> > +             return 0;
>> > +
>> >       policy = cpufreq_cpu_get(policy->cpu);
>> >       if (!policy)
>> >               return -EINVAL;
>> >
>> > -     if (cpu_online(cpu) && cpufreq_driver->getavg)
>> > -             ret = cpufreq_driver->getavg(policy, cpu);
>> > +     ret = cpufreq_driver->getavg(policy, cpu);
>> >
>> >       cpufreq_cpu_put(policy);
>> >       return ret;
>> >
>> --
>> I speak only for myself.
>> Rafael J. Wysocki, Intel Open Source Technology Center.
--
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