linux-kernel - Re: [PATCH v5 00/33] New thermal OF code

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Message-ID: <c7b3c6b3-1384-079c-fe76-dc1eca4f3ab2@linaro.org>
Date:   Wed, 10 Aug 2022 10:34:46 +0200
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     Guenter Roeck <linux@...ck-us.net>,
        Michael Walle <michael@...le.cc>
Cc:     daniel.lezcano@...exp.org, abailon@...libre.com,
        anarsoul@...il.com, baolin.wang7@...il.com,
        bjorn.andersson@...aro.org, broonie@...nel.org,
        damien.lemoal@...nsource.wdc.com, digetx@...il.com,
        f.fainelli@...il.com, glaroque@...libre.com,
        hayashi.kunihiko@...ionext.com, heiko@...ech.de, j-keerthy@...com,
        jonathanh@...dia.com, khilman@...libre.com,
        linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
        lukasz.luba@....com, matthias.bgg@...il.com,
        mcoquelin.stm32@...il.com, mhiramat@...nel.org,
        miquel.raynal@...tlin.com, niklas.soderlund@...natech.se,
        rafael@...nel.org, rui.zhang@...el.com, shawnguo@...nel.org,
        talel@...zon.com, thierry.reding@...il.com, tiny.windzz@...il.com
Subject: Re: [PATCH v5 00/33] New thermal OF code


Hi Guenter,

On 08/08/2022 12:26, Guenter Roeck wrote:
> On Mon, Aug 08, 2022 at 11:42:16AM +0200, Michael Walle wrote:

[ ... ]

> It would also mean that all hwmon drivers registering a thermal zone sensor
> would fail to register unless such a thermal zone actually exists. This
> would make the whole concept of having the hwmon core register thermal
> zone sensors impossible. I have no idea how this is expected to work now,
> but there is an apparent flaw in the logic. That means I withdraw my
> Acked-by: for the hwmon patches in this series until it is guaranteed
> that hwmon registration does not fail as above if there is no thermal
> zone associated with a sensor.

I tried to figure out where we are not in sync and I suspect there is a 
misunderstanding from my side of your initial statement.

I understood you meant the thermal zone can not be created with the 
hwmon if there is no thermal zone description and that was the case before.

But actually, I suspect I misunderstood and you meant if the thermal OF 
registration fails, the hwmon creation fails for the hwmon subsystem, 
and before the changes it was created anyway.

Is that correct ?

If yes, the change -EINVAL --> -ENODEV fixes the issue, shall I consider 
in this case your Acked-by ?

Thanks
   -- Daniel

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