[PATCH 2/8] PCI: Add pci_find_common_upstream_dev()

[hch@xxxxxxxxxxxxx (Christoph Hellwig)]

On Sun, Mar 25, 2018 at 12:59:54PM +0200, Christian König wrote:
> From: "wdavis at nvidia.com" <wdavis at nvidia.com>
> 
> Add an interface to find the first device which is upstream of both
> devices.

Please work with Logan and base this on top of the outstanding peer
to peer patchset.