linux-kernel - Re: [PATCH v3 1/2] acpi: thermal: initialize tz

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Message-ID: <CAJZ5v0joeKd+0TC4ik23zOLKxw0F42aYeZ7XugK=1LpDae3OtQ@mail.gmail.com>
Date:   Mon, 3 Jul 2017 23:08:53 +0200
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        Zhang Rui <rui.zhang@...el.com>
Cc:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Len Brown <lenb@...nel.org>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Guenter Roeck <groeck@...omium.org>,
        Sameer Nanda <snanda@...omium.org>
Subject: Re: [PATCH v3 1/2] acpi: thermal: initialize tz_enabled to 1

On Mon, Jul 3, 2017 at 10:00 AM, Enric Balletbo i Serra
<enric.balletbo@...labora.com> wrote:
> From: Sameer Nanda <snanda@...omium.org>
>
> In the acpi_thermal_add path, acpi_thermal_get_info gets called before
> acpi_thermal_register_thermal_zone.  Since tz_enabled was getting set to
> 1 only in acpi_thermal_register_thermal_zone, acpi_thermal_get_info
> ended up disabling thermal polling.
>
> Moved setting of tz_enabled to 1 into acpi_thermal_add itself.
>
> Signed-off-by: Sameer Nanda <snanda@...omium.org>
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>
> ---
> Changes since v2:
>  - Zhang Rui:
>    - Make sure tz->tz_enabled is set properly before registering the zone.
>
> Changes since v1:
>  - This patch is new from v1 [1]
>
>  [1] https://patchwork.kernel.org/patch/9804229/
>
>  drivers/acpi/thermal.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
> index 1d0417b..cd0fe92 100644
> --- a/drivers/acpi/thermal.c
> +++ b/drivers/acpi/thermal.c
> @@ -930,8 +930,6 @@ static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz)
>         if (ACPI_FAILURE(status))
>                 return -ENODEV;
>
> -       tz->tz_enabled = 1;
> -
>         dev_info(&tz->device->dev, "registered as thermal_zone%d\n",
>                  tz->thermal_zone->id);
>         return 0;
> @@ -1088,6 +1086,7 @@ static int acpi_thermal_add(struct acpi_device *device)
>                 return -ENOMEM;
>
>         tz->device = device;
> +       tz->tz_enabled = 1;
>         strcpy(tz->name, device->pnp.bus_id);
>         strcpy(acpi_device_name(device), ACPI_THERMAL_DEVICE_NAME);
>         strcpy(acpi_device_class(device), ACPI_THERMAL_CLASS);
> --

Rui,

Can I just apply this, or do I need to work for a thermal core update?
 In the latter case, can you take care of this one too, please?

Thanks,
Rafael