Subject: [PATCH v1 08/18] thermal: intel: pch_thermal: Migrate to thermal_zone_device_register()

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 <[email protected]>
---
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);
if (IS_ERR(ptd->tzd)) {
dev_err(&pdev->dev, "Failed to register thermal zone %s\n",
board_names[board_id]);
--
2.43.0



2024-02-01 19:52:22

by Rafael J. Wysocki

[permalink] [raw]
Subject: Re: [PATCH v1 08/18] thermal: intel: pch_thermal: Migrate to thermal_zone_device_register()

On Tue, Jan 30, 2024 at 12:13 PM AngeloGioacchino Del Regno
<[email protected]> 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 <[email protected]>
> ---
> 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.

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]);
> --

Subject: Re: [PATCH v1 08/18] thermal: intel: pch_thermal: Migrate to thermal_zone_device_register()

Il 01/02/24 20:51, Rafael J. Wysocki ha scritto:
> On Tue, Jan 30, 2024 at 12:13 PM AngeloGioacchino Del Regno
> <[email protected]> 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 <[email protected]>
>> ---
>> 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]);
>> --


2024-02-02 18:19:30

by Rafael J. Wysocki

[permalink] [raw]
Subject: Re: [PATCH v1 08/18] thermal: intel: pch_thermal: Migrate to thermal_zone_device_register()

On Fri, Feb 2, 2024 at 11:10 AM AngeloGioacchino Del Regno
<[email protected]> wrote:
>
> Il 01/02/24 20:51, Rafael J. Wysocki ha scritto:
> > On Tue, Jan 30, 2024 at 12:13 PM AngeloGioacchino Del Regno
> > <[email protected]> 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 <[email protected]>
> >> ---
> >> 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.

That's fair.

However, as indicated elsewhere, there are at least a few arguments of
the registration function that fit into the argument list: trips[],
num_trips, ops, devdata.

I'd add the name to that list and put the rest (including type) into
the params struct.

> 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.

Well, it's copied into the struct thermal_zone_device, so it's better
to put it one the stack, so the memory occupied by it gets freed when
not needed any more.