From mboxrd@z Thu Jan  1 00:00:00 1970
From: Luciano Coelho <luciano.coelho-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Subject: Re: acpi/iwlwifi: thermal thermal_zone3: failed to read out thermal
 zone (-61)
Date: Thu, 20 Sep 2018 17:34:58 +0300
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To: sedat.dilek-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, Zhang Rui <rui.zhang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>, Johannes Berg <johannes.berg-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>, Emmanuel Grumbach <emmanuel.grumbach-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
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On Thu, 2018-09-20 at 15:42 +0200, Sedat Dilek wrote:
> Hi,

Hi,


> I am seeing this with Linux v4.18.y and v4.19-rc4.
> 
> Investigating thermal_zone3...
> 
> # cat /sys/devices/virtual/thermal/thermal_zone3/type
> iwlwifi
> 
> I have the following iwlwifi device and firmware installed...
> 
> [   10.476589] iwlwifi 0000:04:00.0: loaded firmware version
> 36.e91976c0.0 op_mode iwlmvm
> [   10.519441] iwlwifi 0000:04:00.0: Detected Intel(R) Dual Band
> Wireless AC 8265, REV=0x230
> 
> What informations do you need and how can I help?

This is normal, though annoying, and was discussed before.  The thermal
framework is trying to read the temperature as soon as the zone is
registered and this causes that warning.  Our device only provides the
temperature when the device goes up, so reading before that will always
fail.

--
Cheers,
Luca.