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SubjectRe: [PATCH v1 08/18] thermal: intel: pch_thermal: Migrate to thermal_zone_device_register()
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Il 01/02/24 20:51, Rafael J. Wysocki ha scritto:
> On Tue, Jan 30, 2024 at 12:13 PM AngeloGioacchino Del Regno
> <angelogioacchino.delregno@collabora.com> wrote:
>>
>> The thermal API has a new thermal_zone_device_register() function which
>> is deprecating the older thermal_zone_device_register_with_trips() and
>> thermal_tripless_zone_device_register().
>>
>> Migrate to the new thermal zone device registration function.
>>
>> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
>> ---
>> drivers/thermal/intel/intel_pch_thermal.c | 12 ++++++++----
>> 1 file changed, 8 insertions(+), 4 deletions(-)
>>
>> diff --git a/drivers/thermal/intel/intel_pch_thermal.c b/drivers/thermal/intel/intel_pch_thermal.c
>> index b3905e34c507..73d7c2ac7dbc 100644
>> --- a/drivers/thermal/intel/intel_pch_thermal.c
>> +++ b/drivers/thermal/intel/intel_pch_thermal.c
>> @@ -160,6 +160,7 @@ static int intel_pch_thermal_probe(struct pci_dev *pdev,
>> const struct pci_device_id *id)
>> {
>> enum pch_board_ids board_id = id->driver_data;
>> + struct thermal_zone_device_params tzdp;
>> struct pch_thermal_device *ptd;
>> int nr_trips = 0;
>> u16 trip_temp;
>> @@ -233,10 +234,13 @@ static int intel_pch_thermal_probe(struct pci_dev *pdev,
>>
>> nr_trips += pch_wpt_add_acpi_psv_trip(ptd, nr_trips);
>>
>> - ptd->tzd = thermal_zone_device_register_with_trips(board_names[board_id],
>> - ptd->trips, nr_trips,
>> - 0, ptd, &tzd_ops,
>> - NULL, 0, 0);
>> + tzdp.tzp.type = board_names[board_id];
>> + tzdp.tzp.devdata = ptd;
>> + tzdp.tzp.trips = ptd->trips;
>> + tzdp.tzp.num_trips = nr_trips;
>> + tzdp.tzp.ops = &tzd_ops;
>> +
>> + ptd->tzd = thermal_zone_device_register(&tzdp);
>
> IMV, this should be
>
> ptd->tzd = thermal_zone_device_register(board_names[board_id],
> ptd->trips, nr_trips, &tzd_ops, ptd, NULL);
>
> and the tzdp variable is not necessary even.
>

The whole point of thermal_zone_device_register() taking just one parameter was
that those older functions were taking a bit too many params, and with the
introduction of Thermal Zone name we'd be adding even more.

For intel_pch_thermal, things are more or less the same, assignments are done there
line by line... but for most of the others, IMO it's easier and schematized as a
single stack-initialized structure that could even be constified in the future.

> Analogously in the rest of the series (ie. patches [4-18/18]).
>
>> if (IS_ERR(ptd->tzd)) {
>> dev_err(&pdev->dev, "Failed to register thermal zone %s\n",
>> board_names[board_id]);
>> --


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