Merge branch 'pci/pm'

- If a device has already been disconnected, e.g., by a hotplug removal,
  don't bother trying to resume it to D0 when detaching the driver (Mario
  Limonciello)

- Ensure devices are powered up before config reads for 'max_link_width',
  'current_link_speed', 'current_link_width', 'secondary_bus_number', and
  'subordinate_bus_number' sysfs files (Brian Norris)

* pci/pm:
  PCI/sysfs: Ensure devices are powered for config reads
  PCI/PM: Skip resuming to D0 if device is disconnected