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Commit b17d98c5 authored by Ram Chandrasekar's avatar Ram Chandrasekar
Browse files

drivers: thermal: Use deferrable work and power efficient workqueue 



Thermal core uses work events to poll for sensor driver temperature
crossing a threshold. Since it is not using a deferrable workqueue, it
might wake-up the device from sleep.

Use a deferrable work event and post the work in the power efficient
workqueue for estimating virtual sensor temperature.

Change-Id: I9dd21d8fc4e5ca96e06db9ecb57a628618494a01
Signed-off-by: default avatarRam Chandrasekar <rkumbako@codeaurora.org>
parent 84cf4451

drivers/thermal/thermal_core.c

+4 −3
Original line number Diff line number Diff line
@@ -418,7 +418,8 @@ static void monitor_thermal_zone(struct thermal_zone_device *tz) 
		thermal_zone_device_set_polling(thermal_passive_wq,

						tz, tz->passive_delay);

	else if (tz->polling_delay)

		thermal_zone_device_set_polling(system_freezable_wq,

		thermal_zone_device_set_polling(

				system_freezable_power_efficient_wq,

				tz, tz->polling_delay);

	else

		thermal_zone_device_set_polling(NULL, tz, 0);
@@ -2134,7 +2135,7 @@ struct thermal_zone_device *thermal_zone_device_register(const char *type, 
	/* Bind cooling devices for this zone */

	bind_tz(tz);



	INIT_DELAYED_WORK(&(tz->poll_queue), thermal_zone_device_check);

	INIT_DEFERRABLE_WORK(&(tz->poll_queue), thermal_zone_device_check);



	thermal_zone_device_reset(tz);

	/* Update the new thermal zone and mark it as already updated. */