thermal/of: Remove of_thermal_is_trip_valid()

There is no benefit with the of_thermal_is_trip_valid() function as it
does the check the thermal_zone_get_trip() is already doing for the
sake of getting the trip point.

As all the calls have been replaced by thermal_zone_get_trip(), there
is no more users of of_thermal_is_trip_valid().

Remove the function.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20221003092602.1323944-18-daniel.lezcano@linaro.org

drivers/thermal/thermal_core.h

@@ -139,16 +139,6 @@ thermal_cooling_device_stats_update(struct thermal_cooling_device *cdev,
 #endif /* CONFIG_THERMAL_STATISTICS */
 
 /* device tree support */
-#ifdef CONFIG_THERMAL_OF
-bool of_thermal_is_trip_valid(struct thermal_zone_device *, int);
-#else
-static inline bool of_thermal_is_trip_valid(struct thermal_zone_device *tz,
-					    int trip)
-{
-	return false;
-}
-#endif
-
 int thermal_zone_device_is_enabled(struct thermal_zone_device *tz);
 
 #endif /* __THERMAL_CORE_H__ */

drivers/thermal/thermal_of.c

@@ -19,25 +19,6 @@
 
 #include "thermal_core.h"
 
-/**
- * of_thermal_is_trip_valid - function to check if trip point is valid
- *
- * @tz:	pointer to a thermal zone
- * @trip:	trip point to evaluate
- *
- * This function is responsible for checking if passed trip point is valid
- *
- * Return: true if trip point is valid, false otherwise
- */
-bool of_thermal_is_trip_valid(struct thermal_zone_device *tz, int trip)
-{
-	if (trip >= tz->num_trips || trip < 0)
-		return false;
-
-	return true;
-}
-EXPORT_SYMBOL_GPL(of_thermal_is_trip_valid);
-
 static int of_thermal_set_trip_hyst(struct thermal_zone_device *tz, int trip,
 				    int hyst)
 {