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SubjectRe: [PATCH v3 1/4] hwmon: (lm90) split set&show temp as common codes
On Fri, Jul 12, 2013 at 04:30:34PM +0200, Jean Delvare wrote:
> Hi Guenter,
>
> On Fri, 12 Jul 2013 06:50:00 -0700, Guenter Roeck wrote:
> > On Fri, Jul 12, 2013 at 03:26:15PM +0200, Jean Delvare wrote:
> > > One thing I am a little worried about (but maybe I'm wrong) is that I
> > > seem to understand you want to register every LM90-like chip as both a
> > > hwmon device and two thermal devices. I seem to recall that every
> > > thermal device is also exposed automatically as a virtual hwmon
> > > device, is that correct? If so we will be presenting the same values
> > > twice to libsensors, which would be confusing.
> >
> > Not sure if that is a good idea, but if I recall correctly, the thermal folks
> > plan to remove that path.
>
> If that means that for example the ACPI thermal zone is no longer
> displayed by "sensors", then I strongly object - unless it is
> explicitly registered as a separate hwmon device from now on, of course.
>
If I recall correctly that was the idea. Of course, in practice that will mean
that devices will _not_ get exposed as hwmon devices, as implementers won't
bother doing both.

> My idea was to make the bridge optional - you decide when you register
> a thermal device if it should be exposed as hwmon or not.
>
Yes, that would be a much better solution.

> I don't have a strong opinion on the implementation, as long as each
> input is listed by "sensors" once and only once.
>
Agreed.

Guenter


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