1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/thermal/thermal_trip.c b/drivers/thermal/thermal_trip.c
index 1cadb3b5d104..a8e92a89b2b8 100644
--- a/drivers/thermal/thermal_trip.c
+++ b/drivers/thermal/thermal_trip.c
@@ -157,3 +157,18 @@ int thermal_zone_set_trip(struct thermal_zone_device *tz, int trip_id,
 
 	return 0;
 }
+
+int thermal_zone_trip_id(struct thermal_zone_device *tz,
+			 const struct thermal_trip *trip)
+{
+	int i;
+
+	lockdep_assert_held(&tz->lock);
+
+	for (i = 0; i < tz->num_trips; i++) {
+		if (&tz->trips[i] == trip)
+			return i;
+	}
+
+	return -ENODATA;
+}