linux-kernel - Re: [PATCH v2 2/2] platform/x86/drivers/acerhdf: Check the interval value when it is set

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Message-ID: <bf62927f-972b-b4c3-ff97-179af6d53882@linaro.org>
Date:   Fri, 4 Dec 2020 12:43:04 +0100
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     Peter Kästle <peter@...e.net>,
        hdegoede@...hat.com, mgross@...ux.intel.com
Cc:     platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/2] platform/x86/drivers/acerhdf: Check the interval
 value when it is set

On 03/12/2020 22:22, Peter Kästle wrote:
> 3. Dezember 2020 08:17, "Daniel Lezcano" <daniel.lezcano@...aro.org> schrieb:
> 
>> Currently the code checks the interval value when the temperature is
>> read which is bad for two reasons:
>>
>> - checking and setting the interval in the get_temp callback is
>> inaccurate and awful, that can be done when changing the value.
>>
>> - Changing the thermal zone structure internals is an abuse of the
>> exported structure, moreover no lock is taken here.
>>
>> The goal of this patch is to solve the first item by using the 'set'
>> function called when changing the interval. The check is done there
>> and removed from the get_temp function. If the thermal zone was not
>> initialized yet, the interval is not updated in this case as that will
>> happen in the init function when registering the thermal zone device.
> 
> Thanks for your effort.  This improves the code, good finding.
> 
>  
>> I don't have any hardware to test the changes.
> 
> Tests successfully executed on my good old AOA110.
> 
> 
>> Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
> 
> Acked-by: Peter Kaestle <peter@...e.net>

Thanks for testing the changes.

Shall pick the patches through the thermal tree ?


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