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

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Date:   Mon, 7 Dec 2020 16:59:22 +0100
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     Hans de Goede <hdegoede@...hat.com>,
        Peter Kästle <peter@...e.net>,
        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 07/12/2020 15:54, Hans de Goede wrote:
> Hi,
> 
> On 12/4/20 12:43 PM, Daniel Lezcano wrote:
>> 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 ?
> 
> I can take them through the drivers/platform/x86 (pdx86) tree,
> but if you prefer to take them upstream through the thermal tree,
> then that is fine too...
> 
> Here is my ack (as pdx86 maintainer) for taking them through
> the thermal tree:
> 
> Acked-by: Hans de Goede <hdegoede@...hat.com>

Thanks. I'll take them through the thermal tree.

  -- Daniel


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