linux-kernel - Re: [PATCH 01/13] thermal: Make temperatures consistently unsigned long

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20150327190750.GZ9742@pengutronix.de>
Date:	Fri, 27 Mar 2015 20:07:50 +0100
From:	Sascha Hauer <s.hauer@...gutronix.de>
To:	Punit Agrawal <punit.agrawal@....com>
Cc:	linux-pm@...r.kernel.org, Zhang Rui <rui.zhang@...el.com>,
	Eduardo Valentin <edubezval@...il.com>,
	linux-kernel@...r.kernel.org,
	Stephen Warren <swarren@...dotorg.org>,
	Mikko Perttunen <mikko.perttunen@...si.fi>,
	kernel@...gutronix.de, linux-mediatek@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 01/13] thermal: Make temperatures consistently unsigned
 long

On Fri, Mar 27, 2015 at 10:18:14AM +0000, Punit Agrawal wrote:
> Hi Sascha,
> 
> Sascha Hauer <s.hauer@...gutronix.de> writes:
> 
> > The thermal framework uses int, long and unsigned long for temperatures
> > in millicelsius. The majority of functions uses unsigned long, so change
> > the remaining functions to use this type aswell.
> >
> > Signed-off-by: Sascha Hauer <s.hauer@...gutronix.de>
> 
> I'd suggest changing to long instead. It would allow the use of the
> thermal framework in environments where temperatures are below 0C -
> quite easily reached in many parts of the world.

I agree to use a signed type. I also found it not so nice that the thermal
core does not support negative temperatures. I only chose unsigned long
because the patch got smallest that way, but I already expected this
answer ;)
We could also use int instead of long. INT_MAX °mC is still enough for using
a computer on the surface of the sun (Not for the center though)

Sascha

-- 
Pengutronix e.K.                           |                             |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/