| From 30582c25a4b4e0a5e456a309fde79b845e9473b2 Mon Sep 17 00:00:00 2001 |
| From: Chanwoo Choi <cw00.choi@samsung.com> |
| Date: Tue, 31 Jan 2017 15:38:17 +0900 |
| Subject: PM / devfreq: Fix wrong trans_stat of passive devfreq device |
| |
| From: Chanwoo Choi <cw00.choi@samsung.com> |
| |
| commit 30582c25a4b4e0a5e456a309fde79b845e9473b2 upstream. |
| |
| 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") |
| Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> |
| Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| |
| --- |
| drivers/devfreq/devfreq.c | 3 ++- |
| drivers/devfreq/governor.h | 2 ++ |
| drivers/devfreq/governor_passive.c | 5 +++++ |
| 3 files changed, 9 insertions(+), 1 deletion(-) |
| |
| --- a/drivers/devfreq/devfreq.c |
| +++ b/drivers/devfreq/devfreq.c |
| @@ -130,7 +130,7 @@ static void devfreq_set_freq_table(struc |
| * @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 @@ out: |
| devfreq->last_stat_updated = cur_time; |
| return ret; |
| } |
| +EXPORT_SYMBOL(devfreq_update_status); |
| |
| /** |
| * find_devfreq_governor() - find devfreq governor from name |
| --- a/drivers/devfreq/governor.h |
| +++ b/drivers/devfreq/governor.h |
| @@ -38,4 +38,6 @@ extern void devfreq_interval_update(stru |
| 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 */ |
| --- a/drivers/devfreq/governor_passive.c |
| +++ b/drivers/devfreq/governor_passive.c |
| @@ -112,6 +112,11 @@ static int update_devfreq_passive(struct |
| 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: |
