Patrick Titiano 9477165ec5 thermal: rcar-thermal: update thermal zone only when temperature changes ... Avoid updating the thermal zone in case an IRQ was triggered but the temperature didn't effectively change. Note this is not a driver issue. Below is a captured debug trace illustrating the purpose of this patch: out of 8 thermal zone updates, only 2 are actually necessary. [ 41.120000] rcar_thermal_work(): cctemp=25000 [ 41.120000] rcar_thermal_work(): nctemp=30000 [ 41.120000] rcar_thermal_work(): temp is now 30000C, update thermal zone [ 58.990000] rcar_thermal_work(): cctemp=30000 [ 58.990000] rcar_thermal_work(): nctemp=30000 [ 58.990000] rcar_thermal_work(): same temp, do not update thermal zone [ 59.290000] rcar_thermal_work(): cctemp=30000 [ 59.290000] rcar_thermal_work(): nctemp=30000 [ 59.290000] rcar_thermal_work(): same temp, do not update thermal zone [ 59.590000] rcar_thermal_work(): cctemp=30000 [ 59.590000] rcar_thermal_work(): nctemp=30000 [ 59.590000] rcar_thermal_work(): same temp, do not update thermal zone [ 59.890000] rcar_thermal_work(): cctemp=30000 [ 59.890000] rcar_thermal_work(): nctemp=30000 [ 59.890000] rcar_thermal_work(): same temp, do not update thermal zone [ 60.190000] rcar_thermal_work(): cctemp=30000 [ 60.190000] rcar_thermal_work(): nctemp=30000 [ 60.190000] rcar_thermal_work(): same temp, do not update thermal zone [ 60.490000] rcar_thermal_work(): cctemp=30000 [ 60.490000] rcar_thermal_work(): nctemp=30000 [ 60.490000] rcar_thermal_work(): same temp, do not update thermal zone [ 60.790000] rcar_thermal_work(): cctemp=30000 [ 60.790000] rcar_thermal_work(): nctemp=35000 [ 60.790000] rcar_thermal_work(): temp is now 35000C, update thermal zone I suspect this may be due to sensor sampling accuracy / fluctuation, but no formal proof. Signed-off-by: Patrick Titiano <ptitiano@baylibre.com> Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>		2014-04-08 09:01:39 +08:00
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samsung	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux	2014-01-24 17:13:49 -08:00
ti-soc-thermal	thermal: ti-soc-thermal: Use SIMPLE_DEV_PM_OPS macro	2014-04-08 09:01:38 +08:00
armada_thermal.c	Merge branches 'misc', 'drv_cleanup', 'devm-cleanup' and 'ti-soc' of .git into next	2013-05-28 10:46:46 +08:00
cpu_cooling.c	Merge branches 'misc', 'soc', 'soc-eduardo' and 'int3404-thermal' of .git into next	2014-01-02 14:22:28 +08:00
db8500_cpufreq_cooling.c
db8500_thermal.c
dove_thermal.c	Merge branches 'misc', 'drv_cleanup', 'devm-cleanup' and 'ti-soc' of .git into next	2013-05-28 10:46:46 +08:00
fair_share.c
imx_thermal.c	thermal: imx: update formula for thermal sensor	2014-04-08 09:01:37 +08:00
int3403_thermal.c	Thermal: ACPI INT3403 thermal driver	2014-01-02 09:42:12 +08:00
intel_powerclamp.c	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux	2014-01-24 17:13:49 -08:00
Kconfig	thermal,rcar_thermal: Add dependency on HAS_IOMEM	2014-03-03 23:15:02 +08:00
kirkwood_thermal.c	Merge branches 'misc', 'drv_cleanup', 'devm-cleanup' and 'ti-soc' of .git into next	2013-05-28 10:46:46 +08:00
Makefile	Merge branches 'misc', 'soc', 'soc-eduardo' and 'int3404-thermal' of .git into next	2014-01-02 14:22:28 +08:00
of-thermal.c	thermal: introduce device tree parser	2013-12-04 09:31:34 -04:00
rcar_thermal.c	thermal: rcar-thermal: update thermal zone only when temperature changes	2014-04-08 09:01:39 +08:00
spear_thermal.c	Merge branches 'misc', 'drv_cleanup', 'devm-cleanup' and 'ti-soc' of .git into next	2013-05-28 10:46:46 +08:00
step_wise.c	thermal: debug: add debug statement for core and step_wise	2014-01-02 10:52:48 +08:00
thermal_core.c	Thermal: thermal zone governor fix	2014-03-03 23:15:57 +08:00
thermal_core.h	thermal: introduce device tree parser	2013-12-04 09:31:34 -04:00
thermal_hwmon.c	Revert "drivers: thermal: parent virtual hwmon with thermal zone"	2013-10-21 11:16:29 +08:00
thermal_hwmon.h	thermal: hwmon: move hwmon support to single file	2013-09-03 09:09:12 -04:00
user_space.c
x86_pkg_temp_thermal.c	x86_pkg_temp_thermal: Fix the thermal zone type	2014-03-03 23:13:37 +08:00