Re: [PATCH 0/5] Improvements to PCI hibernate path

[Rafael J. Wysocki]

On Mon, Apr 27, 2026 at 5:53 AM Mario Limonciello (AMD)
<superm1@xxxxxxxxxx> wrote:
>
> A few cycles ago I sent out a kernel series for using the S4 paths when
> the system goes to S5.  Some parts of it got merged, and Rafael suggested
> to split the other parts into smaller pieces across multiple kernel cycles
> to make bisecting easier.
>
> This fell into my backlog behind other things, so I wanted to try again
> this cycle for the PCI pieces. I have been carrying it, rebasing it and
> personally using it for a while now though.
>
> This series attempts to unify the PCI suspend and hibernate paths and to
> fix some things that I observed to be wrong with how I expect hibernate
> to work.
>
> It is based off 7.1-rc1 + Lukas' patch:
> "PCI: Stop setting cached power state to "unknown" on unbind"
>
> Mario Limonciello (AMD) (5):
>   PCI/PM: Disable device wakeups when halting or powering off system
>   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
>
>  drivers/pci/pci-driver.c | 103 ++++++++++++++++++++++++++-------------
>  1 file changed, 69 insertions(+), 34 deletions(-)
>
> --

It would be good to CC this to linux-pm.