[PATCH] thermal: consistently use int for temperatures

Darren Hart dvhart at infradead.org
Mon Jul 6 11:18:14 PDT 2015

On Mon, Jul 06, 2015 at 09:19:49AM +0200, Sascha Hauer wrote:
> The thermal code uses int, long and unsigned long for temperatures
> in different places.
> Using an unsigned type limits the thermal framework to positive
> temperatures without need. Also several drivers currently will report
> temperatures near UINT_MAX for temperatures below 0°C. This will probably
> immediately shut the machine down due to overtemperature if started below
> 0°C.
> 'long' is 64bit on several architectures. This is not needed since INT_MAX °mC
> is above the melting point of all known materials.
> Consistently use a plain 'int' for temperatures throughout the thermal code and
> the drivers. This only changes the places in the drivers where the temperature
> is passed around as pointer, when drivers internally use another type this is
> not changed.
> Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>


>  drivers/platform/x86/acerhdf.c                     |  9 ++++----
>  drivers/platform/x86/intel_mid_thermal.c           |  9 ++++----

For these two:

Reviewed-by: Darren Hart <dvhart at linux.intel.com>

Darren Hart
Intel Open Source Technology Center

More information about the linux-arm-kernel mailing list