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

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Message-ID: <5111BCDA.1060507@gmail.com>
Date:	Tue, 05 Feb 2013 18:15:54 -0800
From:	Dirk Brandewie <dirk.brandewie@...il.com>
To:	Viresh Kumar <viresh.kumar@...aro.org>
CC:	dirk.brandewie@...il.com, 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 02/05/2013 05:45 PM, Viresh Kumar wrote:
> On Tue, Feb 5, 2013 at 11:54 PM,  <dirk.brandewie@...il.com> wrote:
>> diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
>> index 2817c3c..96bc302 100644
>> --- a/drivers/cpufreq/cpufreq.c
>> +++ b/drivers/cpufreq/cpufreq.c
>> @@ -1181,6 +1181,13 @@ unsigned int cpufreq_quick_get(unsigned int cpu)
>>          struct cpufreq_policy *policy = cpufreq_cpu_get(cpu);
>>          unsigned int ret_freq = 0;
>>
>> +       if (cpufreq_driver && cpufreq_driver->setpolicy &&
>> +               cpufreq_driver->get) {
>> +               ret_freq = cpufreq_driver->get(cpu);
>> +               cpufreq_cpu_put(policy);
>> +               return ret_freq;
>> +       }
>> +
>
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);
  	}


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