On Sun, Jan 20, 2013 at 3:54 PM, Borislav Petkov <bp@xxxxxxxxx> wrote:
> From: Borislav Petkov <bp@xxxxxxx>
>
> Add a helper function to return cpufreq_driver->name.
>
> Signed-off-by: Borislav Petkov <bp@xxxxxxx>
> ---
> drivers/cpufreq/cpufreq.c | 14 ++++++++++++++
> include/linux/cpufreq.h | 1 +
> 2 files changed, 15 insertions(+)
>
> diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
> index 1f93dbd72355..6ed3c1377caf 100644
> --- a/drivers/cpufreq/cpufreq.c
> +++ b/drivers/cpufreq/cpufreq.c
> @@ -1386,6 +1386,20 @@ static struct syscore_ops cpufreq_syscore_ops = {
> .resume = cpufreq_bp_resume,
> };
>
> +/**
> + * cpufreq_get_current_driver - return current driver's name
> + *
> + * Return the name string of the currently loaded cpufreq driver
> + * or NULL, if none.
> + */
> +const char *cpufreq_get_current_driver(void)
> +{
> + if (cpufreq_driver)
> + return cpufreq_driver->name;
> +
> + return NULL;
> +}
> +EXPORT_SYMBOL_GPL(cpufreq_get_current_driver);
>
> /*********************************************************************
> * NOTIFIER LISTS INTERFACE *
> diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
> index a55b88eaf96a..a018da2d2a7c 100644
> --- a/include/linux/cpufreq.h
> +++ b/include/linux/cpufreq.h
> @@ -407,4 +407,5 @@ void cpufreq_frequency_table_get_attr(struct cpufreq_frequency_table *table,
> unsigned int cpu);
>
> void cpufreq_frequency_table_put_attr(unsigned int cpu);
> +extern const char *cpufreq_get_current_driver(void);
Two minor things here:
- You placed the routine at bad place. This place is meant for
freq_table helpers.
- And you really don't need extern for function prototypes.
And after fixing these, feel free to add
Acked-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
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