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PM / devfreq: tegra: Avoid inconsistency of current frequency value 

The frequency value potentially could change in-between. It doesn't
cause any real problem at all right now, but that could change in the
future. Hence let's avoid the inconsistency.

Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
This commit is contained in:
Dmitry Osipenko 2019-05-02 02:38:08 +03:00 committed by MyungJoo Ham
parent 8fda5c1fab
commit 151531f79a
1 changed files with 4 additions and 2 deletions
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6
drivers/devfreq/tegra-devfreq.c
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@ -497,13 +497,15 @@ static int tegra_devfreq_get_dev_status(struct device *dev,
{
struct tegra_devfreq *tegra = dev_get_drvdata(dev);
struct tegra_devfreq_device *actmon_dev;
unsigned long cur_freq;
stat->current_frequency = tegra->cur_freq * KHZ;
cur_freq = READ_ONCE(tegra->cur_freq);
/* To be used by the tegra governor */
stat->private_data = tegra;
/* The below are to be used by the other governors */
stat->current_frequency = cur_freq * KHZ;
actmon_dev = &tegra->devices[MCALL];
@ -514,7 +516,7 @@ static int tegra_devfreq_get_dev_status(struct device *dev,
stat->busy_time *= 100 / BUS_SATURATION_RATIO;
/* Number of cycles in a sampling period */
stat->total_time = ACTMON_SAMPLING_PERIOD * tegra->cur_freq;
stat->total_time = ACTMON_SAMPLING_PERIOD * cur_freq;
stat->busy_time = min(stat->busy_time, stat->total_time);