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SubjectRe: [PATCH 03/11] PM / devfreq: Remove check for df->max_freq == 0 from governors
Hi,

On 2018년 05월 26일 05:30, Matthias Kaehlcke wrote:
> Commit "PM / devfreq: Fix handling of min/max_freq == 0" ensures that
> df->max_freq is not 0, remove unnecessary checks.
>
> Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
> ---
> drivers/devfreq/governor_performance.c | 5 +----
> drivers/devfreq/governor_simpleondemand.c | 7 +++----
> 2 files changed, 4 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/devfreq/governor_performance.c b/drivers/devfreq/governor_performance.c
> index 4d23ecfbd948..1c990cb45098 100644
> --- a/drivers/devfreq/governor_performance.c
> +++ b/drivers/devfreq/governor_performance.c
> @@ -20,10 +20,7 @@ static int devfreq_performance_func(struct devfreq *df,
> * target callback should be able to get floor value as
> * said in devfreq.h
> */
> - if (!df->max_freq)
> - *freq = UINT_MAX;
> - else
> - *freq = df->max_freq;
> + *freq = df->max_freq;
> return 0;
> }
>
> diff --git a/drivers/devfreq/governor_simpleondemand.c b/drivers/devfreq/governor_simpleondemand.c
> index 28e0f2de7100..278964783fa6 100644
> --- a/drivers/devfreq/governor_simpleondemand.c
> +++ b/drivers/devfreq/governor_simpleondemand.c
> @@ -27,7 +27,6 @@ static int devfreq_simple_ondemand_func(struct devfreq *df,
> unsigned int dfso_upthreshold = DFSO_UPTHRESHOLD;
> unsigned int dfso_downdifferential = DFSO_DOWNDIFFERENCTIAL;
> struct devfreq_simple_ondemand_data *data = df->data;
> - unsigned long max = (df->max_freq) ? df->max_freq : UINT_MAX;
>
> err = devfreq_update_stats(df);
> if (err)
> @@ -47,7 +46,7 @@ static int devfreq_simple_ondemand_func(struct devfreq *df,
>
> /* Assume MAX if it is going to be divided by zero */
> if (stat->total_time == 0) {
> - *freq = max;
> + *freq = df->max_freq;
> return 0;
> }
>
> @@ -60,13 +59,13 @@ static int devfreq_simple_ondemand_func(struct devfreq *df,
> /* Set MAX if it's busy enough */
> if (stat->busy_time * 100 >
> stat->total_time * dfso_upthreshold) {
> - *freq = max;
> + *freq = df->max_freq;
> return 0;
> }
>
> /* Set MAX if we do not know the initial frequency */
> if (stat->current_frequency == 0) {
> - *freq = max;
> + *freq = df->max_freq;
> return 0;
> }
>
>

Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>

--
Best Regards,
Chanwoo Choi
Samsung Electronics

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