1 files changed, 18 insertions, 9 deletions

diff --git a/drivers/thermal/thermal_debugfs.c b/drivers/thermal/thermal_debugfs.c
index 5693cc8b23..403f74d663 100644
--- a/drivers/thermal/thermal_debugfs.c
+++ b/drivers/thermal/thermal_debugfs.c
@@ -435,6 +435,14 @@ void thermal_debug_cdev_state_update(const struct thermal_cooling_device *cdev,
 	}
 
 	cdev_dbg->current_state = new_state;
+
+	/*
+	 * Create a record for the new state if it is not there, so its
+	 * duration will be printed by cdev_dt_seq_show() as expected if it
+	 * runs before the next state transition.
+	 */
+	thermal_debugfs_cdev_record_get(thermal_dbg, cdev_dbg->durations, new_state);
+
 	transition = (old_state << 16) | new_state;
 
 	/*
@@ -460,8 +468,9 @@ void thermal_debug_cdev_state_update(const struct thermal_cooling_device *cdev,
  * Allocates a cooling device object for debug, initializes the
  * statistics and create the entries in sysfs.
  * @cdev: a pointer to a cooling device
+ * @state: current state of the cooling device
  */
-void thermal_debug_cdev_add(struct thermal_cooling_device *cdev)
+void thermal_debug_cdev_add(struct thermal_cooling_device *cdev, int state)
 {
 	struct thermal_debugfs *thermal_dbg;
 	struct cdev_debugfs *cdev_dbg;
@@ -478,9 +487,16 @@ void thermal_debug_cdev_add(struct thermal_cooling_device *cdev)
 		INIT_LIST_HEAD(&cdev_dbg->durations[i]);
 	}
 
-	cdev_dbg->current_state = 0;
+	cdev_dbg->current_state = state;
 	cdev_dbg->timestamp = ktime_get();
 
+	/*
+	 * Create a record for the initial cooling device state, so its
+	 * duration will be printed by cdev_dt_seq_show() as expected if it
+	 * runs before the first state transition.
+	 */
+	thermal_debugfs_cdev_record_get(thermal_dbg, cdev_dbg->durations, state);
+
 	debugfs_create_file("trans_table", 0400, thermal_dbg->d_top,
 			    thermal_dbg, &tt_fops);
 
@@ -555,7 +571,6 @@ void thermal_debug_tz_trip_up(struct thermal_zone_device *tz,
 	struct tz_episode *tze;
 	struct tz_debugfs *tz_dbg;
 	struct thermal_debugfs *thermal_dbg = tz->debugfs;
-	int temperature = tz->temperature;
 	int trip_id = thermal_zone_trip_id(tz, trip);
 	ktime_t now = ktime_get();
 
@@ -624,12 +639,6 @@ void thermal_debug_tz_trip_up(struct thermal_zone_device *tz,
 
 	tze = list_first_entry(&tz_dbg->tz_episodes, struct tz_episode, node);
 	tze->trip_stats[trip_id].timestamp = now;
-	tze->trip_stats[trip_id].max = max(tze->trip_stats[trip_id].max, temperature);
-	tze->trip_stats[trip_id].min = min(tze->trip_stats[trip_id].min, temperature);
-	tze->trip_stats[trip_id].count++;
-	tze->trip_stats[trip_id].avg = tze->trip_stats[trip_id].avg +
-		(temperature - tze->trip_stats[trip_id].avg) /
-		tze->trip_stats[trip_id].count;
 
 unlock:
 	mutex_unlock(&thermal_dbg->lock);