This is a note to let you know that I've just added the patch titled PM: sleep: core: Switch back to async_schedule_dev() to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: pm-sleep-core-switch-back-to-async_schedule_dev.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 09beebd8f93b3c8bf894e342f0a203a5c612478c Mon Sep 17 00:00:00 2001 From: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx> Date: Tue, 21 Apr 2020 16:21:55 +0800 Subject: PM: sleep: core: Switch back to async_schedule_dev() From: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx> commit 09beebd8f93b3c8bf894e342f0a203a5c612478c upstream. Commit 8b9ec6b73277 ("PM core: Use new async_schedule_dev command") introduced a new function for better performance. However commit f2a424f6c613 ("PM / core: Introduce dpm_async_fn() helper") went back to the non-optimized version, async_schedule(). So switch back to the sync_schedule_dev() to improve performance Fixes: f2a424f6c613 ("PM / core: Introduce dpm_async_fn() helper") Signed-off-by: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/base/power/main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/base/power/main.c +++ b/drivers/base/power/main.c @@ -726,7 +726,7 @@ static bool dpm_async_fn(struct device * if (is_async(dev)) { get_device(dev); - async_schedule(func, dev); + async_schedule_dev(func, dev); return true; } Patches currently in stable-queue which might be from kai.heng.feng@xxxxxxxxxxxxx are queue-5.4/pci-avoid-asmedia-xhci-usb-pme-from-d0-defect.patch queue-5.4/pm-sleep-core-switch-back-to-async_schedule_dev.patch