6.8-stable review patch. If anyone has any objections, please let me know.
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From: Rafael J. Wysocki rafael.j.wysocki@intel.com
[ Upstream commit f4ae18fcb652c6cccc834ded525ac37f91d5cdb1 ]
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 lukasz.luba@arm.com Signed-off-by: Rafael J. Wysocki rafael.j.wysocki@intel.com Reviewed-by: Lukasz Luba lukasz.luba@arm.com Tested-by: Lukasz Luba lukasz.luba@arm.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/thermal/thermal_debugfs.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/drivers/thermal/thermal_debugfs.c b/drivers/thermal/thermal_debugfs.c index 47ab95b3699e9..2891d2ab4875c 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;
/*