From: Rafael J. Wysocki <[email protected]>
Because thermal_debug_cdev_state_update() only creates a duration record
for the old state of a cooling device, if its new state is used for the
first time, there will be no record for it and cdev_dt_seq_show() will
not print the duration information for it even though it contains code
to compute the duration value in that case.
Address this by making thermal_debug_cdev_state_update() create a
duration record for the new state if there is none.
Fixes: 755113d76786 ("thermal/debugfs: Add thermal cooling device debugfs information")
Reported-by: Lukasz Luba <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
---
drivers/thermal/thermal_debugfs.c | 8 ++++++++
1 file changed, 8 insertions(+)
Index: linux-pm/drivers/thermal/thermal_debugfs.c
===================================================================
--- linux-pm.orig/drivers/thermal/thermal_debugfs.c
+++ linux-pm/drivers/thermal/thermal_debugfs.c
@@ -433,6 +433,14 @@ void thermal_debug_cdev_state_update(con
}
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;
/*