Re: [PATCH RESEND] iwlwifi, Do not implement thermal zone unless ucode is loaded

From: Kalle Valo
Date: Wed Jul 13 2016 - 02:51:14 EST

Prarit Bhargava <prarit@xxxxxxxxxx> writes:

>> We implement thermal zone because we do support it, but the problem is
>> that we need the firmware to be loaded for that. So you can argue that
>> we should register *later* when the firmware is loaded. But this is
>> really not helping all that much because the firmware can also be
>> stopped at any time. So you'd want us to register / unregister the
>> thermal zone anytime the firmware is loaded / unloaded?
> You might have to do that. I think that if the firmware enables a feature then
> the act of loading the firmware should run the code that enables the feature.
> IMO of course.

But I suspect that the iwlwifi firmware is loaded during interface up
(and unloaded during interface down) and in that case
register/unregister would be happening all the time. That doesn't sound
like a good idea. I would rather try to fix the thermal interface to
handle the cases when the measurement is not available.

Kalle Valo