On 8/17/2025 9:00 PM, Mario Limonciello (AMD) wrote:
A variety of issues both in function and in power consumption have been raised as a result of devices not being put into a low power state when the system is powered off.There have been some localized changes[1] to PCI core to help these issues, but they have had various downsides. This series instead tries to use the S4 flow when the system is being powered off. This lines up the behavior with what other operating systems do as well. If for some reason that fails or is not supported, run their shutdown() callbacks. Cc: AceLan Kao <acelan....@canonical.com> Cc: Kai-Heng Feng <kaihe...@nvidia.com> Cc: Mark Pearson <mpearson-len...@squebb.ca> Cc: Merthan Karakaş <m3rth...@gmail.com> Cc: Eric Naim <dn...@cachyos.org> --- v5->v6: * Fix for LKP robot issue * Some commit message changes * Rebase on 6.17-rc2 Mario Limonciello (AMD) (11): 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() for poweroff with S4 flow PCI: PM: Disable device wakeups when halting system through S4 flow PCI: PM: Split out code from pci_pm_suspend_noirq() into helper PCI: PM: Run bridge power up actions as part of restore phase PCI: PM: Use pci_power_manageable() in pci_pm_poweroff_noirq() PCI: Put PCIe bridges with downstream devices into D3 at hibernate drm/amd: Avoid evicting resources at S5 PM: Use hibernate flows for system power off drivers/base/power/main.c | 7 ++ drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 4 + drivers/pci/pci-driver.c | 99 +++++++++++++++------- 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 | 5 +- include/trace/events/power.h | 3 +- kernel/reboot.c | 6 ++ 10 files changed, 103 insertions(+), 35 deletions(-)
Rafael, Bjorn, Any feedback for this series? Thanks,
