[PATCH 6/7] pm: runtime: Mark last busy stamp in pm_request_autosuspend()

[Sakari Ailus <sakari.ailus@linux.intel.com>]

Set device's last busy timestamp to current time in
pm_request_autosuspend().

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
 Documentation/power/runtime_pm.rst | 6 +++---
 include/linux/pm_runtime.h         | 8 +++++---
 2 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/Documentation/power/runtime_pm.rst b/Documentation/power/runtime_pm.rst
index 39a0b62f6648..91bc93422262 100644
--- a/Documentation/power/runtime_pm.rst
+++ b/Documentation/power/runtime_pm.rst
@@ -354,9 +354,9 @@ drivers/base/power/runtime.c and include/linux/pm_runtime.h:
       success or error code if the request has not been queued up
 
   `int pm_request_autosuspend(struct device *dev);`
-    - schedule the execution of the subsystem-level suspend callback for the
-      device when the autosuspend delay has expired; if the delay has already
-      expired then the work item is queued up immediately
+    - Call pm_runtime_mark_last_busy() and schedule the execution of the
+      subsystem-level suspend callback for the device when the autosuspend delay
+      expires
 
   `int pm_schedule_suspend(struct device *dev, unsigned int delay);`
     - schedule the execution of the subsystem-level suspend callback for the
diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h
index 3d12cfb0bf00..61ca98cd0aa2 100644
--- a/include/linux/pm_runtime.h
+++ b/include/linux/pm_runtime.h
@@ -444,11 +444,12 @@ static inline int pm_request_resume(struct device *dev)
 }
 
 /**
- * pm_request_autosuspend - Queue up autosuspend of a device.
+ * pm_request_autosuspend - Update the last access time and queue up autosuspend
+ * of a device.
  * @dev: Target device.
  *
- * Queue up a work item to run an equivalent pm_runtime_autosuspend() for @dev
- * asynchronously.
+ * Update the last access time of a device and queue up a work item to run an
+ * equivalent pm_runtime_autosuspend() for @dev asynchronously.
  *
  * Return:
  * * 0: Success.
@@ -463,6 +464,7 @@ static inline int pm_request_resume(struct device *dev)
  */
 static inline int pm_request_autosuspend(struct device *dev)
 {
+	pm_runtime_mark_last_busy(dev);
 	return __pm_runtime_suspend(dev, RPM_ASYNC | RPM_AUTO);
 }
 
-- 
2.39.5