[PATCH v9 0/4] Introduce and plumb PMSG_POWEROFF

["Mario Limonciello (AMD)" <superm1@kernel.org>]

I've been working on a series that uses the hibernate flows (S4)
during shutdown (S5) [1], but it's a bit risky because it has changes
all around the kernel.  To mitigate risk Rafael suggested [2] to split
the series into at least 3 parts across different kernel cycles.

Here is the first part, which just introduces a PMSG_POWEROFF event
and uses it in any driver that manipulates PM events.

There are no functional changes for these changes and this series is
intended for 6.19.

v8->v9:
 * Reword commit messages (Bjorn)
 * Apply on top of 6.18-rc2 kernel base

Link: https://lore.kernel.org/linux-pm/20250909191619.2580169-1-superm1@kernel.org/ [1]
Link: https://lore.kernel.org/linux-pm/CAJZ5v0jHKp7c7dSQMZr5tmQOV6=fHOygTf-YG6Gx9YmurA9cTA@mail.gmail.com/ [2]

Mario Limonciello (AMD) (4):
  PM: Introduce new PMSG_POWEROFF event
  scsi: Add PM_EVENT_POWEROFF into suspend callbacks
  usb: sl811-hcd: Add PM_EVENT_POWEROFF into suspend callbacks
  USB: Pass PMSG_POWEROFF event to suspend_common()

 drivers/base/power/main.c    |  7 +++++++
 drivers/scsi/mesh.c          |  1 +
 drivers/scsi/stex.c          |  1 +
 drivers/usb/core/hcd-pci.c   | 11 ++++++++++-
 drivers/usb/host/sl811-hcd.c |  1 +
 include/linux/pm.h           |  3 +++
 include/trace/events/power.h |  3 ++-
 7 files changed, 25 insertions(+), 2 deletions(-)

-- 
2.43.0