[PATCH 04/13] thermal: Fix not emulating critical temperatures

Eduardo Valentin edubezval at gmail.com
Mon Apr 6 19:08:30 PDT 2015


On Fri, Mar 27, 2015 at 06:23:18AM +0100, Sascha Hauer wrote:
> Hi Amit,
> 
> On Fri, Mar 27, 2015 at 08:35:50AM +0530, amit daniel kachhap wrote:
> > Hi Sascha,
> > 
> > > -#ifdef CONFIG_THERMAL_EMULATION
> > > -       if (!tz->emul_temperature)
> > > -               goto skip_emul;
> > > -
> > > -       for (count = 0; count < tz->trips; count++) {
> > > -               ret = tz->ops->get_trip_type(tz, count, &type);
> > > -               if (!ret && type == THERMAL_TRIP_CRITICAL) {
> > > -                       ret = tz->ops->get_trip_temp(tz, count, &crit_temp);
> > > -                       break;
> > > -               }
> > > -       }
> > > -
> > > -       if (ret)
> > > -               goto skip_emul;
> > >
> > > -       if (*temp < crit_temp)
> > I guess this check is confusing. Actually instead of returning
> > emulating temperature it is returning actual temperature. But the
> > important thing to look here is that actual temperature is higher than
> > critical temperature. So this check prevents the user from suppressing
> > the critical temperature and hence prevents from burning up the chip.
> 
> Indeed the check is confusing, but now it makes perfectly sense. I'll
> look at the patch again and maybe turn into a patch just adding a
> comment to clarify this.

That will be great. Thanks Sascha.

> 
> 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-pm" in
> the body of a message to majordomo at vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 490 bytes
Desc: Digital signature
URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20150406/2f5c1bfe/attachment.sig>


More information about the linux-arm-kernel mailing list