From 4ec6a9cc23cbadb4721eb3fe778389c4bbede893 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 16 May 2014 13:05:59 +0200 Subject: PM / runtime: Update documentation to reflect the current code flow The runtime PM documentation in runtime_pm.txt has not been updated after some changes to the system suspend and resume core code, so update it to reflect the current code flow. Signed-off-by: Rafael J. Wysocki Acked-by: Alan Stern --- Documentation/power/runtime_pm.txt | 20 +++++++++++--------- 1 file changed, 11 insertions(+), 9 deletions(-) (limited to 'Documentation/power') diff --git a/Documentation/power/runtime_pm.txt b/Documentation/power/runtime_pm.txt index 5f96daf8566a..054893e093c0 100644 --- a/Documentation/power/runtime_pm.txt +++ b/Documentation/power/runtime_pm.txt @@ -648,15 +648,17 @@ The PM core does its best to reduce the probability of race conditions between the runtime PM and system suspend/resume (and hibernation) callbacks by carrying out the following operations: - * During system suspend it calls pm_runtime_get_noresume() and - pm_runtime_barrier() for every device right before executing the - subsystem-level .suspend() callback for it. In addition to that it calls - __pm_runtime_disable() with 'false' as the second argument for every device - right before executing the subsystem-level .suspend_late() callback for it. - - * During system resume it calls pm_runtime_enable() and pm_runtime_put() - for every device right after executing the subsystem-level .resume_early() - callback and right after executing the subsystem-level .resume() callback + * 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. + + * During system resume pm_runtime_enable() and pm_runtime_put() are called for + every device right after executing the subsystem-level .resume_early() + callback and right after executing the subsystem-level .complete() callback for it, respectively. 7. Generic subsystem callbacks -- cgit