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thermal: core: Stop polling DISABLED thermal devices

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Polling DISABLED devices is not desired, as all such "disabled" devices
are meant to be handled by userspace. This patch introduces and uses
should_stop_polling() to decide whether the device should be polled or not.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20200629122925.21729-10-andrzej.p@collabora.com
This commit is contained in:
Andrzej Pietrasiewicz 2020-06-29 14:29:23 +02:00 committed by Daniel Lezcano
parent bbcf90c064
commit b56bdff78e
1 changed files with 14 additions and 2 deletions
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16
drivers/thermal/thermal_core.c
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@ -301,13 +301,22 @@ static void thermal_zone_device_set_polling(struct thermal_zone_device *tz,
cancel_delayed_work(&tz->poll_queue);
}
static inline bool should_stop_polling(struct thermal_zone_device *tz)
{
return !thermal_zone_device_is_enabled(tz);
}
static void monitor_thermal_zone(struct thermal_zone_device *tz)
{
bool stop;
stop = should_stop_polling(tz);
mutex_lock(&tz->lock);
if (tz->passive)
if (!stop && tz->passive)
thermal_zone_device_set_polling(tz, tz->passive_delay);
else if (tz->polling_delay)
else if (!stop && tz->polling_delay)
thermal_zone_device_set_polling(tz, tz->polling_delay);
else
thermal_zone_device_set_polling(tz, 0);
@ -517,6 +526,9 @@ void thermal_zone_device_update(struct thermal_zone_device *tz,
{
int count;
if (should_stop_polling(tz))
return;
if (atomic_read(&in_suspend))
return;