Merge branch 'acpi-thermal'

Merge ACPI thermal driver changes for 6.6-rc1:

 - Drop non-functional nocrt parameter from ACPI thermal (Mario
   Limonciello).

 - Clean up the ACPI thermal driver, rework the handling of firmware
   notifications in it and make it provide a table of generic trip point
   structures to the core during initialization (Rafael Wysocki).

* acpi-thermal:
  ACPI: thermal: Eliminate code duplication from acpi_thermal_notify()
  ACPI: thermal: Drop unnecessary thermal zone callbacks
  ACPI: thermal: Rework thermal_get_trend()
  ACPI: thermal: Use trip point table to register thermal zones
  thermal: core: Rework and rename __for_each_thermal_trip()
  ACPI: thermal: Introduce struct acpi_thermal_trip
  ACPI: thermal: Carry out trip point updates under zone lock
  ACPI: thermal: Clean up acpi_thermal_register_thermal_zone()
  thermal: core: Add priv pointer to struct thermal_trip
  thermal: core: Introduce thermal_zone_device_exec()
  thermal: core: Do not handle trip points with invalid temperature
  ACPI: thermal: Drop redundant local variable from acpi_thermal_resume()
  ACPI: thermal: Do not attach private data to ACPI handles
  ACPI: thermal: Drop enabled flag from struct acpi_thermal_active
  ACPI: thermal: Drop nocrt parameter

Documentation/admin-guide/kernel-parameters.txt

@@ -6275,10 +6275,6 @@
 			-1: disable all critical trip points in all thermal zones
 			<degrees C>: override all critical trip points
 
-	thermal.nocrt=	[HW,ACPI]
-			Set to disable actions on ACPI thermal zone
-			critical and hot trip points.
-
 	thermal.off=	[HW,ACPI]
 			1: disable ACPI thermal control
 

drivers/thermal/thermal_core.c

@@ -348,7 +348,8 @@ static void handle_thermal_trip(struct thermal_zone_device *tz, int trip_id)
 	struct thermal_trip trip;
 
 	/* Ignore disabled trip points */
-	if (test_bit(trip_id, &tz->trips_disabled))
+	if (test_bit(trip_id, &tz->trips_disabled) ||
+	    trip.temperature == THERMAL_TEMP_INVALID)
 		return;
 
 	__thermal_zone_get_trip(tz, trip_id, &trip);
@@ -496,6 +497,25 @@ void thermal_zone_device_update(struct thermal_zone_device *tz,
 }
 EXPORT_SYMBOL_GPL(thermal_zone_device_update);
 
+/**
+ * thermal_zone_device_exec - Run a callback under the zone lock.
+ * @tz: Thermal zone.
+ * @cb: Callback to run.
+ * @data: Data to pass to the callback.
+ */
+void thermal_zone_device_exec(struct thermal_zone_device *tz,
+			      void (*cb)(struct thermal_zone_device *,
+					 unsigned long),
+			      unsigned long data)
+{
+	mutex_lock(&tz->lock);
+
+	cb(tz, data);
+
+	mutex_unlock(&tz->lock);
+}
+EXPORT_SYMBOL_GPL(thermal_zone_device_exec);
+
 static void thermal_zone_device_check(struct work_struct *work)
 {
 	struct thermal_zone_device *tz = container_of(work, struct

drivers/thermal/thermal_core.h

@@ -54,10 +54,6 @@ int for_each_thermal_cooling_device(int (*cb)(struct thermal_cooling_device *,
 int for_each_thermal_governor(int (*cb)(struct thermal_governor *, void *),
 			      void *thermal_governor);
 
-int __for_each_thermal_trip(struct thermal_zone_device *,
-			    int (*cb)(struct thermal_trip *, void *),
-			    void *);
-
 struct thermal_zone_device *thermal_zone_get_by_id(int id);
 
 struct thermal_attr {

drivers/thermal/thermal_trip.c

@@ -9,28 +9,26 @@
  */
 #include "thermal_core.h"
 
-int __for_each_thermal_trip(struct thermal_zone_device *tz,
-			    int (*cb)(struct thermal_trip *, void *),
-			    void *data)
+int for_each_thermal_trip(struct thermal_zone_device *tz,
+			  int (*cb)(struct thermal_trip *, void *),
+			  void *data)
 {
 	int i, ret;
-	struct thermal_trip trip;
 
 	lockdep_assert_held(&tz->lock);
 
-	for (i = 0; i < tz->num_trips; i++) {
-
-		ret = __thermal_zone_get_trip(tz, i, &trip);
-		if (ret)
-			return ret;
+	if (!tz->trips)
+		return -ENODATA;
 
-		ret = cb(&trip, data);
+	for (i = 0; i < tz->num_trips; i++) {
+		ret = cb(&tz->trips[i], data);
 		if (ret)
 			return ret;
 	}
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(for_each_thermal_trip);
 
 int thermal_zone_get_num_trips(struct thermal_zone_device *tz)
 {

include/linux/thermal.h

@@ -81,11 +81,13 @@ struct thermal_zone_device_ops {
  * @temperature: temperature value in miliCelsius
  * @hysteresis: relative hysteresis in miliCelsius
  * @type: trip point type
+ * @priv: pointer to driver data associated with this trip
  */
 struct thermal_trip {
 	int temperature;
 	int hysteresis;
 	enum thermal_trip_type type;
+	void *priv;
 };
 
 struct thermal_cooling_device_ops {
@@ -287,6 +289,9 @@ int thermal_zone_get_trip(struct thermal_zone_device *tz, int trip_id,
 int thermal_zone_set_trip(struct thermal_zone_device *tz, int trip_id,
 			  const struct thermal_trip *trip);
 
+int for_each_thermal_trip(struct thermal_zone_device *tz,
+			  int (*cb)(struct thermal_trip *, void *),
+			  void *data);
 int thermal_zone_get_num_trips(struct thermal_zone_device *tz);
 
 int thermal_zone_get_crit_temp(struct thermal_zone_device *tz, int *temp);
@@ -323,6 +328,10 @@ int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int,
 				       struct thermal_cooling_device *);
 void thermal_zone_device_update(struct thermal_zone_device *,
 				enum thermal_notify_event);
+void thermal_zone_device_exec(struct thermal_zone_device *tz,
+			      void (*cb)(struct thermal_zone_device *,
+					 unsigned long),
+			      unsigned long data);
 
 struct thermal_cooling_device *thermal_cooling_device_register(const char *,
 		void *, const struct thermal_cooling_device_ops *);