On Thu, Nov 11, 2021 at 06:32:28PM +0100, Robert Święcki wrote:

Hi,

quoted

quoted

Thank you very much for testing this.  The patch changed the way we
use runtime PM, and the dmesg snippets below look like they could be
related to runtime PM issues.

I think the conclusion is that we need to revert these commits:

  b5f9c644eb1b ("PCI: Remove struct pci_dev->driver")
  2a4d9408c9e8 ("PCI: Use to_pci_driver() instead of pci_dev->driver")

from Linus' tree.  I queued up those reverts on
https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git/log/?h=for-linus

These reverts appeared in the Nov 11 linux-next tree.  Any chance you
could verify that they solve the i2c_dw_pci_resume() issue?  If it's
easier, you can apply them from:
https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git/log/?h=for-linus
instead.

Looks good with the most recent 3 commits from for-linus applied on
the top of the current linus' tree.

No problematic dmesg entries, my Win11/vfio/kvm/qemu boots fine.

Thank you so much for testing this!  I'll ask Linus to pull the two
reverts related to the i2c_dw_pci_resume() issue.  Marc and Christian
are still hoping for a fix instead of the third revert.

Bjorn