Merge branch 'pci/p2pdma'

- Rename Rename upstream_bridge_distance() to calc_map_type_and_dist()
  (Logan Gunthorpe)

- Collect ACS list message in stack buffer to avoid sleeping (Logan
  Gunthorpe)

- Use correct calc_map_type_and_dist() return type (Logan Gunthorpe)

- Warn if host bridge not in whitelist (Logan Gunthorpe)

- Refactor pci_p2pdma_map_type() (Logan Gunthorpe)

- Avoid pci_get_slot(), which may sleep (Logan Gunthorpe)

- Simplify distance calculation in __calc_map_type_and_dist() and
  calc_map_type_and_dist_warn() (Christoph Hellwig)

- Finish RCU conversion of pdev->p2pdma (Eric Dumazet)

* pci/p2pdma:
  PCI/P2PDMA: Finish RCU conversion of pdev->p2pdma
  PCI/P2PDMA: Simplify distance calculation
  PCI/P2PDMA: Avoid pci_get_slot(), which may sleep
  PCI/P2PDMA: Refactor pci_p2pdma_map_type()
  PCI/P2PDMA: Warn if host bridge not in whitelist
  PCI/P2PDMA: Use correct calc_map_type_and_dist() return type
  PCI/P2PDMA: Collect acs list in stack buffer to avoid sleeping
  PCI/P2PDMA: Rename upstream_bridge_distance() and rework doc