ACPI: thermal: Clean up acpi_thermal_register_thermal_zone()

Rename the trips variable in acpi_thermal_register_thermal_zone() to
trip_count so its name better reflects the purpose, rearrange white
space in the loop over active trips for clarity and reduce code
duplication related to calling thermal_zone_device_register() by
using an extra local variable to store the passive delay value.

No intentional functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/acpi/thermal.c

@@ -740,33 +740,29 @@ static void acpi_thermal_zone_sysfs_remove(struct acpi_thermal *tz)
 
 static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz)
 {
-	int trips = 0;
+	int passive_delay = 0;
+	int trip_count = 0;
 	int result;
 	int i;
 
 	if (tz->trips.critical.valid)
-		trips++;
+		trip_count++;
 
 	if (tz->trips.hot.valid)
-		trips++;
+		trip_count++;
 
-	if (tz->trips.passive.valid)
-		trips++;
-
-	for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE && tz->trips.active[i].valid;
-	     i++, trips++);
+	if (tz->trips.passive.valid) {
+		trip_count++;
+		passive_delay = tz->trips.passive.tsp * 100;
+	}
 
-	if (tz->trips.passive.valid)
-		tz->thermal_zone = thermal_zone_device_register("acpitz", trips, 0, tz,
-								&acpi_thermal_zone_ops, NULL,
-								tz->trips.passive.tsp * 100,
-								tz->polling_frequency * 100);
-	else
-		tz->thermal_zone =
-			thermal_zone_device_register("acpitz", trips, 0, tz,
-						     &acpi_thermal_zone_ops, NULL,
-						     0, tz->polling_frequency * 100);
+	for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE && tz->trips.active[i].valid; i++)
+		trip_count++;
 
+	tz->thermal_zone = thermal_zone_device_register("acpitz", trip_count, 0,
+							tz, &acpi_thermal_zone_ops,
+							NULL, passive_delay,
+							tz->polling_frequency * 100);
 	if (IS_ERR(tz->thermal_zone))
 		return -ENODEV;