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| author | Eduardo Valentin <eduardo.valentin@ti.com> | 2013-03-26 21:38:34 +0000 |
|---|---|---|
| committer | Zhang Rui <rui.zhang@intel.com> | 2013-04-02 21:34:42 +0800 |
| commit | 8837295a73f3500b32e18f9862c7bdde0b958648 (patch) | |
| tree | f0749e2a6ad90dabf901480cbc740aa9c47a4a1f | |
| parent | bffd1f8ac87a798515a8aed5f64047b182e049f5 (diff) | |
| download | linux-3.10-8837295a73f3500b32e18f9862c7bdde0b958648.tar.gz linux-3.10-8837295a73f3500b32e18f9862c7bdde0b958648.tar.bz2 linux-3.10-8837295a73f3500b32e18f9862c7bdde0b958648.zip | |
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>
| -rw-r--r-- | Documentation/thermal/sysfs-api.txt | 4 | ||||
| -rw-r--r-- | drivers/thermal/Kconfig | 4 |
2 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/thermal/sysfs-api.txt b/Documentation/thermal/sysfs-api.txt index 6859661c9d3..277530a5786 100644 --- a/Documentation/thermal/sysfs-api.txt +++ b/Documentation/thermal/sysfs-api.txt @@ -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 * ***************************** diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig index 2a19120c32b..fb0672baff4 100644 --- a/drivers/thermal/Kconfig +++ b/drivers/thermal/Kconfig @@ -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 |