Merge back material related to system sleep for 6.20

Author: rafaeljw

Documentation/power/runtime_pm.rst

@@ -712,10 +712,9 @@ out the following operations:
   * During system suspend pm_runtime_get_noresume() is called for every device
     right before executing the subsystem-level .prepare() callback for it and
     pm_runtime_barrier() is called for every device right before executing the
-    subsystem-level .suspend() callback for it.  In addition to that the PM core
-    calls __pm_runtime_disable() with 'false' as the second argument for every
-    device right before executing the subsystem-level .suspend_late() callback
-    for it.
+    subsystem-level .suspend() callback for it.  In addition to that, the PM
+    core disables runtime PM for every device right before executing the
+    subsystem-level .suspend_late() callback for it.
 
   * During system resume pm_runtime_enable() and pm_runtime_put() are called for
     every device right after executing the subsystem-level .resume_early()

drivers/base/power/main.c

@@ -1647,10 +1647,11 @@ static void device_suspend_late(struct device *dev, pm_message_t state, bool asy
 		goto Complete;
 
 	/*
-	 * Disable runtime PM for the device without checking if there is a
-	 * pending resume request for it.
+	 * After this point, any runtime PM operations targeting the device
+	 * will fail until the corresponding pm_runtime_enable() call in
+	 * device_resume_early().
 	 */
-	__pm_runtime_disable(dev, false);
+	pm_runtime_disable(dev);
 
 	if (dev->power.syscore)
 		goto Skip;

kernel/power/main.c

@@ -1125,7 +1125,7 @@ EXPORT_SYMBOL_GPL(pm_wq);
 
 static int __init pm_start_workqueues(void)
 {
-	pm_wq = alloc_workqueue("pm", WQ_FREEZABLE | WQ_UNBOUND, 0);
+	pm_wq = alloc_workqueue("pm", WQ_UNBOUND, 0);
 	if (!pm_wq)
 		return -ENOMEM;