Date: Fri, 12 Jul 2013 07:40:11 -0700
From: Guenter Roeck <linux@roeck-us.net>
To: Jean Delvare <khali@linux-fr.org>
Cc: Wei Ni <wni@nvidia.com>, thierry.reding@gmail.com,
        lm-sensors@lm-sensors.org, linux-kernel@vger.kernel.org,
        linux-tegra@vger.kernel.org
Subject: Re: [PATCH v3 1/4] hwmon: (lm90) split set&show temp as common codes
Message-ID: <20130712144011.GC3629@roeck-us.net>
References: <1373615287-18502-1-git-send-email-wni@nvidia.com>
 <1373615287-18502-2-git-send-email-wni@nvidia.com>
 <20130712152615.23464a6b@endymion.delvare>
 <20130712135000.GA3386@roeck-us.net>
 <20130712163034.1fc1cd66@endymion.delvare>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20130712163034.1fc1cd66@endymion.delvare>
User-Agent: Mutt/1.5.21 (2010-09-15)
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1698
Lines: 39

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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/