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| author | Rajagopal Venkat <rajagopal.venkat@linaro.org> | 2013-01-08 06:50:39 +0100 |
|---|---|---|
| committer | MyungJoo Ham <myungjoo.ham@samsung.com> | 2013-06-03 13:20:29 +0200 |
| commit | 39688ce6facd63de796def41a0b9012882b5cc14 (patch) | |
| tree | ea8d71c2309912f01575130fc8593b35062ca470 /drivers/devfreq | |
| parent | PM / devfreq: Add Exynos5-bus devfreq driver for Exynos5250 (diff) | |
| download | linux-39688ce6facd63de796def41a0b9012882b5cc14.tar.xz linux-39688ce6facd63de796def41a0b9012882b5cc14.zip | |
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>
Diffstat (limited to 'drivers/devfreq')
| -rw-r--r-- | drivers/devfreq/devfreq.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c index 3b367973a802..abfa14dd8b4c 100644 --- a/drivers/devfreq/devfreq.c +++ b/drivers/devfreq/devfreq.c @@ -271,6 +271,7 @@ void devfreq_monitor_suspend(struct devfreq *devfreq) 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 @@ EXPORT_SYMBOL(devfreq_monitor_suspend); */ void devfreq_monitor_resume(struct devfreq *devfreq) { + unsigned long freq; + mutex_lock(&devfreq->lock); if (!devfreq->stop_polling) goto out; @@ -295,8 +298,14 @@ void devfreq_monitor_resume(struct devfreq *devfreq) 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 @@ static ssize_t show_trans_table(struct device *dev, struct device_attribute *att { 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"); |