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

[Bjorn Helgaas <helgaas@kernel.org>]

On Sun, Apr 26, 2026 at 10:53:36PM -0500, Mario Limonciello (AMD) 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"

Hi Mario, would you mind posting a v2 that includes Lukas' patch, so
the whole series applies cleanly so Sashiko can go through it?

I already applied Lukas' patch on pci/pm, but I guess Sashiko can't
parse that dependency.

> 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(-)
> 
> -- 
> 2.43.0
>