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thermal: intel: Adjust ops handling during thermal zone registration

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Because thermal zone operations are now stored directly in struct
thermal_zone_device, thermal zone creators can discard the operations
structure after the zone registration is complete, or it can be made
read-only.

Accordingly, make int340x_thermal_zone_add() use a local variable to
represent thermal zone operations, so it is freed automatically upon the
function exit, and make the other Intel thermal drivers use const zone
operations structures.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org>
This commit is contained in:
Rafael J. Wysocki 2024-02-05 22:20:32 +01:00
parent 75fb871472
commit 62dd17846d
7 changed files with 11 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c
View File

@ -61,12 +61,6 @@ static void int340x_thermal_critical(struct thermal_zone_device *zone)
dev_dbg(&zone->device, "%s: critical temperature reached\n", zone->type);
}
static struct thermal_zone_device_ops int340x_thermal_zone_ops = {
.get_temp = int340x_thermal_get_zone_temp,
.set_trip_temp = int340x_thermal_set_trip_temp,
.critical = int340x_thermal_critical,
};
static inline void *int_to_trip_priv(int i)
{
return (void *)(long)i;
@ -126,6 +120,11 @@ static struct thermal_zone_params int340x_thermal_params = {
struct int34x_thermal_zone *int340x_thermal_zone_add(struct acpi_device *adev,
int (*get_temp) (struct thermal_zone_device *, int *))
{
const struct thermal_zone_device_ops zone_ops = {
.set_trip_temp = int340x_thermal_set_trip_temp,
.critical = int340x_thermal_critical,
.get_temp = get_temp ? get_temp : int340x_thermal_get_zone_temp,
};
struct int34x_thermal_zone *int34x_zone;
struct thermal_trip *zone_trips;
unsigned long long trip_cnt = 0;
@ -140,16 +139,6 @@ struct int34x_thermal_zone *int340x_thermal_zone_add(struct acpi_device *adev,
int34x_zone->adev = adev;
int34x_zone->ops = kmemdup(&int340x_thermal_zone_ops,
sizeof(int340x_thermal_zone_ops), GFP_KERNEL);
if (!int34x_zone->ops) {
ret = -ENOMEM;
goto err_ops_alloc;
}
if (get_temp)
int34x_zone->ops->get_temp = get_temp;
status = acpi_evaluate_integer(adev->handle, "PATC", NULL, &trip_cnt);
if (ACPI_SUCCESS(status)) {
int34x_zone->aux_trip_nr = trip_cnt;
@ -185,7 +174,7 @@ struct int34x_thermal_zone *int340x_thermal_zone_add(struct acpi_device *adev,
acpi_device_bid(adev),
zone_trips, trip_cnt,
trip_mask, int34x_zone,
int34x_zone->ops,
&zone_ops,
&int340x_thermal_params,
0, 0);
kfree(zone_trips);
@ -205,8 +194,6 @@ err_enable:
err_thermal_zone:
acpi_lpat_free_conversion_table(int34x_zone->lpat_table);
err_trips_alloc:
kfree(int34x_zone->ops);
err_ops_alloc:
kfree(int34x_zone);
return ERR_PTR(ret);
}
@ -216,7 +203,6 @@ void int340x_thermal_zone_remove(struct int34x_thermal_zone *int34x_zone)
{
thermal_zone_device_unregister(int34x_zone->zone);
acpi_lpat_free_conversion_table(int34x_zone->lpat_table);
kfree(int34x_zone->ops);
kfree(int34x_zone);
}
EXPORT_SYMBOL_GPL(int340x_thermal_zone_remove);

1
drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.h
View File

@ -22,7 +22,6 @@ struct int34x_thermal_zone {
struct acpi_device *adev;
int aux_trip_nr;
struct thermal_zone_device *zone;
struct thermal_zone_device_ops *ops;
void *priv_data;
struct acpi_lpat_conversion_table *lpat_table;
};

2
drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c
View File

@ -233,7 +233,7 @@ static int get_trip_temp(struct proc_thermal_pci *pci_info)
return temp;
}
static struct thermal_zone_device_ops tzone_ops = {
static const struct thermal_zone_device_ops tzone_ops = {
.get_temp = sys_get_curr_temp,
.set_trip_temp = sys_set_trip_temp,
};

2
drivers/thermal/intel/intel_pch_thermal.c
View File

@ -132,7 +132,7 @@ static void pch_critical(struct thermal_zone_device *tzd)
thermal_zone_device_type(tzd));
}
static struct thermal_zone_device_ops tzd_ops = {
static const struct thermal_zone_device_ops tzd_ops = {
.get_temp = pch_thermal_get_temp,
.critical = pch_critical,
};

2
drivers/thermal/intel/intel_quark_dts_thermal.c
View File

@ -292,7 +292,7 @@ static int sys_change_mode(struct thermal_zone_device *tzd,
return ret;
}
static struct thermal_zone_device_ops tzone_ops = {
static const struct thermal_zone_device_ops tzone_ops = {
.get_temp = sys_get_curr_temp,
.set_trip_temp = sys_set_trip_temp,
.change_mode = sys_change_mode,

2
drivers/thermal/intel/intel_soc_dts_iosf.c
View File

@ -168,7 +168,7 @@ static int sys_get_curr_temp(struct thermal_zone_device *tzd,
return 0;
}
static struct thermal_zone_device_ops tzone_ops = {
static const struct thermal_zone_device_ops tzone_ops = {
.get_temp = sys_get_curr_temp,
.set_trip_temp = sys_set_trip_temp,
};

2
drivers/thermal/intel/x86_pkg_temp_thermal.c
View File

@ -166,7 +166,7 @@ sys_set_trip_temp(struct thermal_zone_device *tzd, int trip, int temp)
}
/* Thermal zone callback registry */
static struct thermal_zone_device_ops tzone_ops = {
static const struct thermal_zone_device_ops tzone_ops = {
.get_temp = sys_get_curr_temp,
.set_trip_temp = sys_set_trip_temp,
};