Hi Lukasz,

On 2018년 12월 03일 23:31, Lukasz Luba wrote:
> The refactoring is needed for the new client in devfreq: suspend.
> To avoid code duplication, move it to the new local function
> devfreq_set_target.
> 
> The patch is based on earlier work by Tobias Jakobi.

As I already commented, Please remove it. You already mentioned it on 
cover-letter.
If you want to contain the contribution history of Tobias, you might better
to add 'Signed-off-by' or others.

> 
> Suggested-by: Tobias Jakobi <[email protected]>
> Suggested-by: Chanwoo Choi <[email protected]>
> Signed-off-by: Lukasz Luba <[email protected]>
> ---
>  drivers/devfreq/devfreq.c | 62 
> +++++++++++++++++++++++++++--------------------
>  1 file changed, 36 insertions(+), 26 deletions(-)
> 
> diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
> index 1414130..a9fd61b 100644
> --- a/drivers/devfreq/devfreq.c
> +++ b/drivers/devfreq/devfreq.c
> @@ -285,6 +285,40 @@ static int devfreq_notify_transition(struct devfreq 
> *devfreq,
>       return 0;
>  }
>  
> +static int devfreq_set_target(struct devfreq *devfreq, unsigned long 
> new_freq,
> +                           u32 flags)
> +{
> +     struct devfreq_freqs freqs;
> +     unsigned long cur_freq;
> +     int err = 0;
> +
> +     if (devfreq->profile->get_cur_freq)
> +             devfreq->profile->get_cur_freq(devfreq->dev.parent, &cur_freq);
> +     else
> +             cur_freq = devfreq->previous_freq;
> +
> +     freqs.old = cur_freq;
> +     freqs.new = new_freq;
> +     devfreq_notify_transition(devfreq, &freqs, DEVFREQ_PRECHANGE);
> +
> +     err = devfreq->profile->target(devfreq->dev.parent, &new_freq, flags);
> +     if (err) {
> +             freqs.new = cur_freq;
> +             devfreq_notify_transition(devfreq, &freqs, DEVFREQ_POSTCHANGE);
> +             return err;
> +     }
> +
> +     freqs.new = new_freq;
> +     devfreq_notify_transition(devfreq, &freqs, DEVFREQ_POSTCHANGE);
> +
> +     if (devfreq_update_status(devfreq, new_freq))
> +             dev_err(&devfreq->dev,
> +                     "Couldn't update frequency transition information.\n");
> +
> +     devfreq->previous_freq = new_freq;
> +     return err;
> +}
> +
>  /* Load monitoring helper functions for governors use */
>  
>  /**
> @@ -296,8 +330,7 @@ static int devfreq_notify_transition(struct devfreq 
> *devfreq,
>   */
>  int update_devfreq(struct devfreq *devfreq)
>  {
> -     struct devfreq_freqs freqs;
> -     unsigned long freq, cur_freq, min_freq, max_freq;
> +     unsigned long freq, min_freq, max_freq;
>       int err = 0;
>       u32 flags = 0;
>  
> @@ -333,31 +366,8 @@ int update_devfreq(struct devfreq *devfreq)
>               flags |= DEVFREQ_FLAG_LEAST_UPPER_BOUND; /* Use LUB */
>       }
>  
> -     if (devfreq->profile->get_cur_freq)
> -             devfreq->profile->get_cur_freq(devfreq->dev.parent, &cur_freq);
> -     else
> -             cur_freq = devfreq->previous_freq;
> -
> -     freqs.old = cur_freq;
> -     freqs.new = freq;
> -     devfreq_notify_transition(devfreq, &freqs, DEVFREQ_PRECHANGE);
> +     return devfreq_set_target(devfreq, freq, flags);
>  
> -     err = devfreq->profile->target(devfreq->dev.parent, &freq, flags);
> -     if (err) {
> -             freqs.new = cur_freq;
> -             devfreq_notify_transition(devfreq, &freqs, DEVFREQ_POSTCHANGE);
> -             return err;
> -     }
> -
> -     freqs.new = freq;
> -     devfreq_notify_transition(devfreq, &freqs, DEVFREQ_POSTCHANGE);
> -
> -     if (devfreq_update_status(devfreq, freq))
> -             dev_err(&devfreq->dev,
> -                     "Couldn't update frequency transition information.\n");
> -
> -     devfreq->previous_freq = freq;
> -     return err;
>  }
>  EXPORT_SYMBOL(update_devfreq);
>  
> 


-- 
Best Regards,
Chanwoo Choi
Samsung Electronics

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