Disable Suspend-to-Idle in Hyper-V and Fix Hibernation Interruptions

It has been reported that Hyper-V VM users can unintentionally abort hibernation by mouse or keyboard movements. To address this issue, we have decided to remove the wakeup events for the Hyper-V keyboard and mouse driver. However, this change introduces another problem:
Suspend-to-Idle brings the system down with no method to wake it back up.

Given that there are no real users of Suspend-to-Idle in Hyper-V, we have decided to disable this feature for VMBus. This results in:

$echo freeze > /sys/power/state

The keyboard and mouse were previously registered as wakeup sources to interrupt the freeze operation in a VM. Since the freeze operation itself is no longer supported, we are disabling them as wakeup events.

This patchset ensures that the system remains stable and prevents
unintended interruptions during hibernation.
---
Changes in v4:
* Make keyboard and mouse wakeup capable by adding
device_set_wakeup_capable but not enabling them as wakeup sources.
https://lore.kernel.org/lkml/[email protected]/
* Remove device_wakeup_init() call in mousevsc_remove() v3:https://lore.kernel.org/lkml/[email protected]/

Changes in v3:
* Add 'Cc: [email protected]' in sign-off area. v2:https://lore.kernel.org/lkml/[email protected]/

Changes in v2:
* Add "#define vmbus_freeze NULL" when CONFIG_PM_SLEEP is not
enabled.
* Change commit message to clarify that this change is specifc to
Hyper-V based VMs.
v1:https://lore.kernel.org/lkml/[email protected]/
---

Erni Sri Satya Vennela (3):
Drivers: hv: vmbus: Disable Suspend-to-Idle for VMBus
Input: hyperv-keyboard - disable as wakeup source
HID: hyperv: disable as wakeup source

 drivers/hid/hid-hyperv.c              |  3 +--
 drivers/hv/vmbus_drv.c                | 16 +++++++++++++++-
 drivers/input/serio/hyperv-keyboard.c |  2 +-
 3 files changed, 17 insertions(+), 4 deletions(-)

2.34.1