thermal: core: constify params in thermal_zone_device_register

Since commit 3d439b1 ("thermal/core: Alloc-copy-free the thermal zone
parameters structure"), thermal_zone_device_register() allocates a copy
of the tzp argument and callers need not explicitly manage its lifetime.

This means the function no longer cares about the parameter being
mutable, so constify it.

No functional change.

Signed-off-by: Ahmad Fatoum <[email protected]>
Acked-by: Daniel Lezcano <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>

Author: a3f

drivers/thermal/thermal_core.c

@@ -1203,7 +1203,7 @@ EXPORT_SYMBOL_GPL(thermal_zone_get_crit_temp);
 struct thermal_zone_device *
 thermal_zone_device_register_with_trips(const char *type, struct thermal_trip *trips, int num_trips, int mask,
 					void *devdata, struct thermal_zone_device_ops *ops,
-					struct thermal_zone_params *tzp, int passive_delay,
+					const struct thermal_zone_params *tzp, int passive_delay,
 					int polling_delay)
 {
 	struct thermal_zone_device *tz;
@@ -1371,7 +1371,7 @@ EXPORT_SYMBOL_GPL(thermal_zone_device_register_with_trips);
 
 struct thermal_zone_device *thermal_zone_device_register(const char *type, int ntrips, int mask,
 							 void *devdata, struct thermal_zone_device_ops *ops,
-							 struct thermal_zone_params *tzp, int passive_delay,
+							 const struct thermal_zone_params *tzp, int passive_delay,
 							 int polling_delay)
 {
 	return thermal_zone_device_register_with_trips(type, NULL, ntrips, mask,

include/linux/thermal.h

@@ -301,14 +301,14 @@ int thermal_acpi_critical_trip_temp(struct acpi_device *adev, int *ret_temp);
 #ifdef CONFIG_THERMAL
 struct thermal_zone_device *thermal_zone_device_register(const char *, int, int,
 		void *, struct thermal_zone_device_ops *,
-		struct thermal_zone_params *, int, int);
+		const struct thermal_zone_params *, int, int);
 
 void thermal_zone_device_unregister(struct thermal_zone_device *);
 
 struct thermal_zone_device *
 thermal_zone_device_register_with_trips(const char *, struct thermal_trip *, int, int,
 					void *, struct thermal_zone_device_ops *,
-					struct thermal_zone_params *, int, int);
+					const struct thermal_zone_params *, int, int);
 
 void *thermal_zone_device_priv(struct thermal_zone_device *tzd);
 const char *thermal_zone_device_type(struct thermal_zone_device *tzd);
@@ -348,7 +348,7 @@ void thermal_zone_device_critical(struct thermal_zone_device *tz);
 static inline struct thermal_zone_device *thermal_zone_device_register(
 	const char *type, int trips, int mask, void *devdata,
 	struct thermal_zone_device_ops *ops,
-	struct thermal_zone_params *tzp,
+	const struct thermal_zone_params *tzp,
 	int passive_delay, int polling_delay)
 { return ERR_PTR(-ENODEV); }
 static inline void thermal_zone_device_unregister(