linux-kernel - Re: [PATCH 5/6] cpufreq: balance out cpufreq_cpu_{get,put} for scaling drivers using setpolicy

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Date:	Sat, 2 Feb 2013 11:11:07 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	dirk.brandewie@...il.com
Cc:	linux-kernel@...r.kernel.org, cpufreq@...r.kernel.org
Subject: Re: [PATCH 5/6] cpufreq: balance out cpufreq_cpu_{get,put} for
 scaling drivers using setpolicy

On Sat, Feb 2, 2013 at 12:15 AM,  <dirk.brandewie@...il.com> wrote:
> From: Dirk Brandewie <dirk.brandewie@...il.com>
>
> There is an additional reference added to the driver in
> cpufreq_add_dev_policy() that is removed in__cpufreq_governor() if the
> driver implements target().  Remove the last reference when the driver
> implements setpolicy()
>
> Signed-off-by: Dirk Brandewie <dirk.brandewie@...il.com>

Rebase it on latest work as cpufreq_add_dev_policy() doesn't exist anymore.

> ---
>  drivers/cpufreq/cpufreq.c |    3 +++
>  1 files changed, 3 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
> index a4fd51e..ec103bf 100644
> --- a/drivers/cpufreq/cpufreq.c
> +++ b/drivers/cpufreq/cpufreq.c
> @@ -1119,6 +1119,9 @@ static int __cpufreq_remove_dev(struct device *dev, struct subsys_interface *sif
>         if (cpufreq_driver->target)
>                 __cpufreq_governor(data, CPUFREQ_GOV_STOP);
>
> +       if (cpufreq_driver->setpolicy)
> +               cpufreq_cpu_put(data);
> +
>         kobj = &data->kobj;
>         cmp = &data->kobj_unregister;
>         unlock_policy_rwsem_write(cpu);
> --
> 1.7.7.6
>
> --
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