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PM / devfreq: Fix wrong trans_stat of passive devfreq device 

Until now, the trans_stat information of passive devfreq is not updated.
This patch updates the trans_stat information after setting the target
frequency of passive devfreq device.

Fixes: 996133119f ("PM / devfreq: Add new passive governor")
Cc: stable@vger.kernel.org
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
This commit is contained in:
Chanwoo Choi 2017-01-31 15:38:17 +09:00 committed by MyungJoo Ham
parent bcf23c79c4
commit 30582c25a4
3 changed files with 9 additions and 1 deletions
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3
drivers/devfreq/devfreq.c
View File

@ -130,7 +130,7 @@ static void devfreq_set_freq_table(struct devfreq *devfreq)
* @devfreq: the devfreq instance
* @freq: the update target frequency
*/
static int devfreq_update_status(struct devfreq *devfreq, unsigned long freq)
int devfreq_update_status(struct devfreq *devfreq, unsigned long freq)
{
int lev, prev_lev, ret = 0;
unsigned long cur_time;
@ -166,6 +166,7 @@ static int devfreq_update_status(struct devfreq *devfreq, unsigned long freq)
devfreq->last_stat_updated = cur_time;
return ret;
}
EXPORT_SYMBOL(devfreq_update_status);
/**
* find_devfreq_governor() - find devfreq governor from name

2
drivers/devfreq/governor.h
View File

@ -38,4 +38,6 @@ extern void devfreq_interval_update(struct devfreq *devfreq,
extern int devfreq_add_governor(struct devfreq_governor *governor);
extern int devfreq_remove_governor(struct devfreq_governor *governor);
extern int devfreq_update_status(struct devfreq *devfreq, unsigned long freq);
#endif /* _GOVERNOR_H */

5
drivers/devfreq/governor_passive.c
View File

@ -112,6 +112,11 @@ static int update_devfreq_passive(struct devfreq *devfreq, unsigned long freq)
if (ret < 0)
goto out;
if (devfreq->profile->freq_table
&& (devfreq_update_status(devfreq, freq)))
dev_err(&devfreq->dev,
"Couldn't update frequency transition information.\n");
devfreq->previous_freq = freq;
out: