linux-kernel - Re: [PATCH 2/7] cpufreq: Retrieve current frequency from scaling drivers with internal governors

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Date:	Wed, 6 Feb 2013 07:55:48 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	Dirk Brandewie <dirk.brandewie@...il.com>
Cc:	linux-kernel@...r.kernel.org, cpufreq@...r.kernel.org,
	Dirk Brandewie <dirk.j.brandewie@...el.com>
Subject: Re: [PATCH 2/7] cpufreq: Retrieve current frequency from scaling
 drivers with internal governors

On Wed, Feb 6, 2013 at 7:45 AM, Dirk Brandewie <dirk.brandewie@...il.com> wrote:
> How about this?
>
> diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
> index 2817c3c..9c0eac4 100644
> --- a/drivers/cpufreq/cpufreq.c
> +++ b/drivers/cpufreq/cpufreq.c
> @@ -1182,7 +1182,12 @@ unsigned int cpufreq_quick_get(unsigned int cpu)
>
>         unsigned int ret_freq = 0;
>
>         if (policy) {
> -               ret_freq = policy->cur;
>
> +               if (cpufreq_driver && cpufreq_driver->setpolicy &&
> +                       cpufreq_driver->get) {
> +                       ret_freq = cpufreq_driver->get(cpu);
> +               } else {
> +                       ret_freq = policy->cur;
> +               }
>                 cpufreq_cpu_put(policy);

The problem is: You don't need to do get/put in your case at all.
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