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

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Message-ID: <5788D397.9030904@redhat.com>
Date:	Fri, 15 Jul 2016 08:14:15 -0400
From:	Prarit Bhargava <prarit@...hat.com>
To:	Stanislaw Gruszka <sgruszka@...hat.com>,
	"Grumbach, Emmanuel" <emmanuel.grumbach@...el.com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linuxwifi <linuxwifi@...el.com>,
	"Coelho, Luciano" <luciano.coelho@...el.com>,
	"Berg, Johannes" <johannes.berg@...el.com>,
	"kvalo@...eaurora.org" <kvalo@...eaurora.org>,
	"Ivgi, Chaya Rachel" <chaya.rachel.ivgi@...el.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"Sharon, Sara" <sara.sharon@...el.com>,
	"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>
Subject: Re: [PATCH RESEND] iwlwifi, Do not implement thermal zone unless
 ucode is loaded



On 07/15/2016 07:25 AM, Stanislaw Gruszka wrote:
> On Thu, Jul 14, 2016 at 09:44:22AM +0000, Grumbach, Emmanuel wrote:
>>> If I understad correctly this error happen 100% of the time, not only during
>>> init. Hence seems there is an issue here, i.e. cur_ucode is not marked
>>> correctly as IWL_UCODE_REGULAR or iwl_mvm_get_temp() fail 100% of the
>>> time (iwl_mvm_is_tt_in_fw() incorrecly return true on Prarit device ? ).
>>
>> Cur_ucode will not be IWL_UCODE_REGULAR until you load the firmware which
>> will happen upon ifup.
> 
> Then creating thermal_device on ifup looks more reasonable to me.
> Otherwise we can create device that can be non-functional virtually
> forever, i.e. when soft RFKILL is enabled. However I admit that
> creating thermal_device when HW is detected has some advantages
> too.

That's my plan right now.  Unfortunately something else in the kernel seems
recently broken and is preventing me from testing.  I will get back to this
early next week.

P.
> 
> Stanislaw
>