linux-kernel - Re: [PATCH 2/3] thermal: qoriq_thermal: only enable supported sensors

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Date:   Wed, 7 Jun 2023 21:10:18 +0200
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     Sebastian Krzyszkowiak <sebastian.krzyszkowiak@...i.sm>,
        Peng Fan <peng.fan@....com>,
        "Peng Fan (OSS)" <peng.fan@....nxp.com>,
        "rafael@...nel.org" <rafael@...nel.org>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>
Cc:     "amitk@...nel.org" <amitk@...nel.org>,
        "rui.zhang@...el.com" <rui.zhang@...el.com>,
        "andrew.smirnov@...il.com" <andrew.smirnov@...il.com>,
        "linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "festevam@...il.com" <festevam@...il.com>,
        dl-linux-imx <linux-imx@....com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        Alice Guo <alice.guo@....com>
Subject: Re: [PATCH 2/3] thermal: qoriq_thermal: only enable supported sensors

On 07/06/2023 19:42, Sebastian Krzyszkowiak wrote:

[ ... ]

>> Hence, the thermal_zone_device_register_with_trips() is not called, the
>> thermal zone is not created neither updated.
> 
> Again - that's not the case the check is there for. It's there for zones that
> do exist and that do get registered, because REGS_TMR only gets set *after*
> all the zones are already registered (the driver as it is right now does not
> know which sites it should enable before registering the zones). Because of
> that, the first value a zone gets after being registered is always bogus,
> because no monitoring site has been enabled yet at all.

Ok, I misunderstood. I thought that was for failing registered thermal zone.

Would enabling the site in ops->change_mode do the trick ?







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