PM / devfreq: account suspend/resume for stats
devfreq stats is not taking device suspend and resume into
account. Fix it.
Signed-off-by: Rajagopal Venkat <rajagopal.venkat@linaro.org>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
index 3b36797..abfa14d 100644
--- a/drivers/devfreq/devfreq.c
+++ b/drivers/devfreq/devfreq.c
@@ -271,6 +271,7 @@
return;
}
+ devfreq_update_status(devfreq, devfreq->previous_freq);
devfreq->stop_polling = true;
mutex_unlock(&devfreq->lock);
cancel_delayed_work_sync(&devfreq->work);
@@ -287,6 +288,8 @@
*/
void devfreq_monitor_resume(struct devfreq *devfreq)
{
+ unsigned long freq;
+
mutex_lock(&devfreq->lock);
if (!devfreq->stop_polling)
goto out;
@@ -295,8 +298,14 @@
devfreq->profile->polling_ms)
queue_delayed_work(devfreq_wq, &devfreq->work,
msecs_to_jiffies(devfreq->profile->polling_ms));
+
+ devfreq->last_stat_updated = jiffies;
devfreq->stop_polling = false;
+ if (devfreq->profile->get_cur_freq &&
+ !devfreq->profile->get_cur_freq(devfreq->dev.parent, &freq))
+ devfreq->previous_freq = freq;
+
out:
mutex_unlock(&devfreq->lock);
}
@@ -905,11 +914,11 @@
{
struct devfreq *devfreq = to_devfreq(dev);
ssize_t len;
- int i, j, err;
+ int i, j;
unsigned int max_state = devfreq->profile->max_state;
- err = devfreq_update_status(devfreq, devfreq->previous_freq);
- if (err)
+ if (!devfreq->stop_polling &&
+ devfreq_update_status(devfreq, devfreq->previous_freq))
return 0;
len = sprintf(buf, " From : To\n");