linux-kernel - Re: [PATCH v1 2/2] thermal: Fail object registration if thermal class is not registered

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Message-ID: <4c532a7b-d5b4-da5e-5703-c6f8ebfbc62b@linaro.org>
Date:   Fri, 20 Jan 2023 23:43:58 +0100
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Linux PM <linux-pm@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
        Zhang Rui <rui.zhang@...el.com>
Subject: Re: [PATCH v1 2/2] thermal: Fail object registration if thermal class
 is not registered

On 20/01/2023 20:48, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> 
> If thermal_class is not registered with the driver core, there is no way
> to expose the interfaces used by the thermal control framework, so
> prevent thermal zones and cooling devices from being registered in
> that case by returning an error from object registration functions.
> 
> For this purpose, introduce class_is_registered() that checks the
> private pointer of the given class and returns 'false' if it is NULL,
> which means that the class has not been registered, and use it in the
> thermal framework.
> 
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>

Acked-by: Daniel Lezcano <daniel.lezcano@...aro.org>


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