linux-kernel - Re: [PATCH 3/3] thermal/drivers/intel: Use generic trip points int340x

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Date:   Fri, 13 Jan 2023 18:21:09 +0100
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     srinivas pandruvada <srinivas.pandruvada@...ux.intel.com>,
        "Zhang, Rui" <rui.zhang@...el.com>,
        "rafael@...nel.org" <rafael@...nel.org>
Cc:     "linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
        "daniel.lezcano@...nel.org" <daniel.lezcano@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "christophe.jaillet@...adoo.fr" <christophe.jaillet@...adoo.fr>,
        "linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
        "amitk@...nel.org" <amitk@...nel.org>
Subject: Re: [PATCH 3/3] thermal/drivers/intel: Use generic trip points
 int340x


Hi Srinivas,

On 13/01/2023 16:48, srinivas pandruvada wrote:
> Hi Daniel,
> 
>>>>
> 
> [...]
> 
>>>> -       status = acpi_evaluate_integer(d->adev->handle, "GTSH",
>>>> NULL,
>>>> &hyst);
>>>> -       if (ACPI_FAILURE(status))
>>>> -               *temp = 0;
>>>> -       else
>>>> -               *temp = hyst * 100;
>>>
>>> The previous code returns hyst * 100.
>>> But the new API retuurns hyst directly.
>>>
>>> -/sys/class/thermal/thermal_zone2/trip_point_4_hyst:2000
>>> +/sys/class/the
>>> rmal/thermal_zone2/trip_point_4_hyst:20
>>>
>>> Is this done on purpose?
>>
>> No, it is an error. The function thermal_acpi_trip_gtsh() should do:
>>
>>          return deci_kelvin_to_millicelsius(hyst);
>>
>>
> 
> GTSH returns here in tenths of degree Kelvin. For example 15 means 1.5
> degree K.

Yes, so the above conversion is correct, right ?

> I would like to test your next series with thermald. If there is a
> problem, it will break every distro.

Great, thanks!


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