On Tue, Nov 07, 2017 at 01:49:03AM +0100, Rafael J. Wysocki wrote: > On 11/5/2017 3:44 PM, gregkh@xxxxxxxxxxxxxxxxxxx wrote: > > This is a note to let you know that I've just added the patch titled > > > > PM / QoS: Fix default runtime_pm device resume latency > > > > to the 4.13-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-qos-fix-default-runtime_pm-device-resume-latency.patch > > and it can be found in the queue-4.13 subdirectory. > > > > If you, or anyone else, feels it should not be added to the stable tree, > > please let <stable@xxxxxxxxxxxxxxx> know about it. > > > > > > From 2a9a86d5c81389cd9afe6a4fea42c585733cd705 Mon Sep 17 00:00:00 2001 > > From: Tero Kristo <t-kristo@xxxxxx> > > Date: Mon, 30 Oct 2017 09:10:46 +0200 > > Subject: PM / QoS: Fix default runtime_pm device resume latency > > > > From: Tero Kristo <t-kristo@xxxxxx> > > > > commit 2a9a86d5c81389cd9afe6a4fea42c585733cd705 upstream. > > > > The recent change to the PM QoS framework to introduce a proper > > no constraint value overlooked to handle the devices which don't > > implement PM QoS OPS. Runtime PM is one of the more severely > > impacted subsystems, failing every attempt to runtime suspend > > a device. This leads into some nasty second level issues like > > probe failures and increased power consumption among other > > things. > > > > Fix this by adding a proper return value for devices that don't > > implement PM QoS. > > > > Fixes: 0cc2b4e5a020 (PM / QoS: Fix device resume latency PM QoS) > > Signed-off-by: Tero Kristo <t-kristo@xxxxxx> > > Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> > > Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> > > > > --- > > include/linux/pm_qos.h | 3 ++- > > 1 file changed, 2 insertions(+), 1 deletion(-) > > > > --- a/include/linux/pm_qos.h > > +++ b/include/linux/pm_qos.h > > @@ -175,7 +175,8 @@ static inline s32 dev_pm_qos_requested_f > > static inline s32 dev_pm_qos_raw_read_value(struct device *dev) > > { > > return IS_ERR_OR_NULL(dev->power.qos) ? > > - 0 : pm_qos_read_value(&dev->power.qos->resume_latency); > > + PM_QOS_RESUME_LATENCY_NO_CONSTRAINT : > > + pm_qos_read_value(&dev->power.qos->resume_latency); > > } > > #else > > static inline enum pm_qos_flags_status __dev_pm_qos_flags(struct device *dev, > > > > > > Patches currently in stable-queue which might be from t-kristo@xxxxxx are > > > > queue-4.13/pm-qos-fix-default-runtime_pm-device-resume-latency.patch > > Please drop this from the -stable queue, it has been reverted from the > mainline. Ah, thanks for letting me know, now dropped. greg k-h