On Wed, Feb 6, 2013 at 10:32 PM, <dirk.brande...@gmail.com> wrote:
> From: Dirk Brandewie <dirk.brande...@gmail.com>
>
> Scaling drivers that implement the cpufreq_driver.setpolicy() versus
> the cpufreq_driver.target() interface do not set policy->cur.
>
> Normally policy->cur is set during the call to cpufreq_driver.target()
> when the frequnecy request is made by the governor.
>
> If the scaling driver implements cpufreq_driver.setpolicy() and
> cpufreq_driver.get() interfaces use cpufreq_driver.get() to retrieve
> the current frequency.
>
> Signed-off-by: Dirk Brandewie <dirk.j.brande...@intel.com>
> Acked-by: Viresh Kumar <viresh.ku...@linaro.org>
To fix sparse warning updated this patch as:
commit f6060fa13ace2da4e691233706a788f91ad453da
Author: Viresh Kumar <viresh.ku...@linaro.org>
Date: Thu Feb 7 19:12:16 2013 +0530
fixup! cpufreq: Retrieve current frequency from scaling drivers
with internal governors
---
drivers/cpufreq/cpufreq.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 447b313..e140b81 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -1173,12 +1173,12 @@ static void cpufreq_out_of_sync(unsigned int
cpu, unsigned int old_freq,
*/
unsigned int cpufreq_quick_get(unsigned int cpu)
{
+ struct cpufreq_driver *driver = rcu_dereference(cpufreq_driver);
struct cpufreq_policy *policy;
unsigned int ret_freq = 0;
- if (cpufreq_driver && cpufreq_driver->setpolicy &&
- cpufreq_driver->get)
- return cpufreq_driver->get(cpu);
+ if (driver && driver->setpolicy && driver->get)
+ return driver->get(cpu);
policy = cpufreq_cpu_get(cpu);
if (policy) {
--
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