[PATCH v2 00/13] Refactor pci_is_brdige() to simplify code

[Yijing Wang <wangyijing@huawei.com>]

v1->v2: Add comments for new pci_is_bridge().

This patchset rename the current pci_is_bridge() to pci_has_subordinate(), 
and introduce a new pci_is_bridge() which determine pci bridge by check
dev->hdr_type. The new one is more accurate. PCI Spec define the pci
device is a bridge by the dev->hdr_type = 0x01 || 0x02.

There is no guarantee that a PCI bridge must attached a subordinate bus.
When PCI bridge is created but before the scan child bus, it has no 
subordinate bus. Also users can remove the pci bus using
interface pci_remove_bus() in remove.c. 

So use new pci_is_bridge() check if the PCI device is bridge is better
choice. If user want check PCI bridge whether has a subordinate bus,
pci_has_subordinate() is a candidate.


Yijing Wang (13):
  PCI: rename pci_is_bridge() to pci_has_subordinate()
  PCI: Introduce new pci_is_bridge() helper function
  PCI: Use new pci_is_bridge() to simplify code
  x86/PCI: Use new pci_is_bridge() to simplify code
  IA64/PCI: Use new pci_is_bridge() to simplify code
  powerpc/PCI: Use new pci_is_bridge() to simplify code
  sparc/PCI: Use new pci_is_bridge() to simplify code
  PCI, rpaphp: Use new pci_is_bridge() to simplify code
  PCI, shpchp: Use new pci_is_bridge() to simplify code
  PCI, cpcihp: Use new pci_is_bridge() to simplify code
  PCI, acpiphp: Use new pci_is_bridge() to simplify code
  PCI, pcmcia: Use new pci_is_bridge() to simplify code
  PCI, pciehp: Use new pci_is_bridge() to simplify code

 arch/ia64/pci/fixup.c                  |    4 +---
 arch/powerpc/kernel/pci-hotplug.c      |    3 +--
 arch/powerpc/kernel/pci_of_scan.c      |    3 +--
 arch/sparc/kernel/pci.c                |    3 +--
 arch/x86/pci/fixup.c                   |    4 +---
 drivers/pci/hotplug/acpiphp_glue.c     |    3 +--
 drivers/pci/hotplug/cpci_hotplug_pci.c |    3 +--
 drivers/pci/hotplug/pciehp_pci.c       |    3 +--
 drivers/pci/hotplug/rpadlpar_core.c    |    3 +--
 drivers/pci/hotplug/shpchp_pci.c       |    3 +--
 drivers/pci/pci-acpi.c                 |    8 +-------
 drivers/pci/pci-driver.c               |    8 ++++----
 drivers/pci/pci.h                      |    2 +-
 drivers/pci/probe.c                    |    3 +--
 drivers/pci/setup-bus.c                |    4 +---
 drivers/pcmcia/cardbus.c               |    3 +--
 include/linux/pci.h                    |   13 +++++++++++++
 17 files changed, 32 insertions(+), 41 deletions(-)