Hi,
this series contain what I needed to do in order to have my USB webcam to not
be resumed when the system resumes, reducing considerably the total time that
resuming takes.
It makes use of the facility that Rafael Wysocki added in aae4518b3 ("PM /
sleep: Mechanism to avoid resuming runtime-suspended devices unnecessarily"),
which requires that a devices and all its descendants opt-in by having their
dev_pm_ops.prepare callback return 1, to have runtime PM enabled, and to be
runtime suspended when the system goes to a sleep state.
Thanks,
Tomeu
Tomeu Vizoso (6):
[media] uvcvideo: Enable runtime PM of descendant devices
[media] v4l2-core: Implement dev_pm_ops.prepare()
Input: Implement dev_pm_ops.prepare()
[media] media-devnode: Implement dev_pm_ops.prepare callback
Input: evdev - Enable runtime PM of the evdev input handler
USB / PM: Allow USB devices to remain runtime-suspended when sleeping
drivers/input/evdev.c | 3 +++
drivers/input/input.c | 13 +++++++++++++
drivers/media/media-devnode.c | 10 ++++++++++
drivers/media/usb/uvc/uvc_driver.c | 4 ++++
drivers/media/usb/uvc/uvc_status.c | 3 +++
drivers/media/v4l2-core/v4l2-dev.c | 10 ++++++++++
drivers/usb/core/endpoint.c | 17 +++++++++++++++++
drivers/usb/core/message.c | 16 ++++++++++++++++
drivers/usb/core/port.c | 6 ++++++
drivers/usb/core/usb.c | 2 +-
10 files changed, 83 insertions(+), 1 deletion(-)
--
2.3.4
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