[PATCH 0/4] pci: Add PCI_BUS() and PCI_DEVID() interfaces to return bus number and device id

[Shuah Khan <shuah.khan@hp.com>]

pci defines PCI_DEVFN(), PCI_SLOT(), and PCI_FUNC() interfaces, however,
it doesn't have interfaces to return PCI bus and PCI device id. Drivers
(AMD IOMMU, and AER) have module specific definitions for PCI_BUS() and
AMD_IOMMU driver also has a module specific interface to calculate PCI
device id from bus number and devfn.

This patch set adds PCI_BUS(), and PCI_DEVID() to pci.h, changes are to
use PCI_BUS() from pci. Changes AMD_IOMMU driver to use PCI_BUS() and
PCI_DEVID() from pci.

Files changed:

 include/uapi/linux/pci.h |    4 ++++
 1 file changed, 4 insertions(+)

 drivers/pci/pcie/aer/aerdrv_core.c |    2 --
 1 file changed, 2 deletions(-)

 drivers/iommu/amd_iommu_types.h |    4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

 drivers/iommu/amd_iommu.c       |    2 +-
 drivers/iommu/amd_iommu_init.c  |    6 +++---
 drivers/iommu/amd_iommu_types.h |    7 -------
 3 files changed, 4 insertions(+), 11 deletions(-)