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: 996133119f57 ("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>
diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
index ade279d..4e86cc0 100644
--- a/drivers/devfreq/devfreq.c
+++ b/drivers/devfreq/devfreq.c
@@ -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
diff --git a/drivers/devfreq/governor.h b/drivers/devfreq/governor.h
index fad7d63..71576b8 100644
--- a/drivers/devfreq/governor.h
+++ b/drivers/devfreq/governor.h
@@ -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 */
diff --git a/drivers/devfreq/governor_passive.c b/drivers/devfreq/governor_passive.c
index 93795b3..5be96b2 100644
--- a/drivers/devfreq/governor_passive.c
+++ b/drivers/devfreq/governor_passive.c
@@ -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: