Re: [PATCH v2] thermal: consistently use int for temperatures

Sascha Hauer
2015-07-24T06:29:48Z

On Thu, Jul 23, 2015 at 02:07:59PM +0200, Pavel Machek wrote:
> On Tue 2015-07-21 09:21:32, 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.
>
> Can we do something like
>
> typedef millicelsius_t int;
>
> ...to document the units?

I am not very fond of typedefs and I am not sure this adds any value. I
could change it when more people ask for it, but I just sent the new
version without this.

Sascha

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