Register a PM notifier in virtio-gpu to handle suspend/hibernate
events. On PM_POST_HIBERNATION, restore all GPU objects so that the
driver can properly recover after resume.
Suggested-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Cc: Vivek Kasireddy <vivek.kasireddy@intel.com>
Signed-off-by: Dongwon Kim <dongwon.kim@intel.com>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://patch.msgid.link/20260526192814.179673-4-dongwon.kim@intel.com
[dmitry.osipenko@collabora.com: rename vgdev->hibernation -> hibernated]
[dmitry.osipenko@collabora.com: restore objs on suspend error]
[dmitry.osipenko@collabora.com: no_cb int -> bool]
[dmitry.osipenko@collabora.com: don't include pm_runtime.h]
[dmitry.osipenko@collabora.com: proeprly handle failing register_pm_notifier]
78e434bdc0