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Commit 8837295a authored Mar 26, 2013 by Eduardo Valentin Committed by Zhang Rui Apr 02, 2013

thermal: add a warning for temperature emulation feature



Because this feature is for debuging purposes, it is highly
recommended to do not enable this on production systems.
This patch adds warnings for system integrators, so that
people are aware of this potential security issue.

Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

parent bffd1f8a

Documentation/thermal/sysfs-api.txt

+4 −0

Original line number	Diff line number	Diff line
		@@ -265,6 +265,10 @@ emul_temp
		Unit: millidegree Celsius
		WO, Optional

		WARNING: Be careful while enabling this option on production systems,
		because userland can easily disable the thermal policy by simply
		flooding this sysfs node with low temperature values.

		*****************************
		* Cooling device attributes *
		*****************************

drivers/thermal/Kconfig

+4 −0

Original line number	Diff line number	Diff line
		@@ -86,6 +86,10 @@ config THERMAL_EMULATION
		user can manually input temperature and test the different trip
		threshold behaviour for simulation purpose.

		WARNING: Be careful while enabling this option on production systems,
		because userland can easily disable the thermal policy by simply
		flooding this sysfs node with low temperature values.

		config SPEAR_THERMAL
		bool "SPEAr thermal sensor driver"
		depends on PLAT_SPEAR