[PATCH v4 01/14] PCI/P2PDMA: Support peer-to-peer memory

[Logan Gunthorpe]

Thanks for the review. I'll apply all of these for the changes for next
version of the set.
>> +/*
>> + * If a device is behind a switch, we try to find the upstream bridge
>> + * port of the switch. This requires two calls to pci_upstream_bridge():
>> + * one for the upstream port on the switch, one on the upstream port
>> + * for the next level in the hierarchy. Because of this, devices connected
>> + * to the root port will be rejected.
>> + */
>> +static struct pci_dev *get_upstream_bridge_port(struct pci_dev *pdev)
> 
> This function doesn't seem to be used anymore.  Thanks for all your hard
> work to get rid of it!

Oops, I thought I had gotten rid of it entirely, but I guess I messed it
up a bit and it gets removed in patch 4. I'll fix it for v5.

Logan