[PATCH -v3 0/3] Use PCIe DSN to improve pciehp_resume

[Yijing Wang <wangyijing@huawei.com>]

v2->v3: add a wrap function pci_dsn_init, fix other typo error and git am error.
		Thanks for Don Dutile and Paul Bolle 's review,comments and test.
v1->v2: Modify pci_get_dsn to pci_device_serial_number,
	    power off slot before remove the old device during resume to avoid
		old .remove() method to touch new hardware.
		Fix other typo and fail check problems.
		Split the list_empty() guard into new patch.
		Thanks for Bjorn's review and comments.

This series applied to Bjorn's pci-next branch.

Yijing Wang (3):
  PCI: introduce PCIe Device Serial Number Capability support
  PCI,pciehp: avoid add a device already exist before suspend during
    resume
  PCI,pciehp: use PCIe DSN to identify device change during suspend

 drivers/pci/hotplug/pciehp_core.c |   55 +++++++++++++++++++++++++++++++++++--
 drivers/pci/pci.c                 |   30 ++++++++++++++++++++
 drivers/pci/pci.h                 |    1 +
 drivers/pci/probe.c               |    2 +
 include/linux/pci.h               |    3 ++
 5 files changed, 88 insertions(+), 3 deletions(-)