[Skiboot] [PATCH v3 6/9] core/pci: Reserve PCI buses for RC's slot

[Stewart Smith]

Gavin Shan <gwshan at linux.vnet.ibm.com> writes:
> When RC's downstream link is down, we need reserve spare PCI buses
> if it has an associated PCI hotplug slot. Otherwise, the adapter
> behind it can't be probed successfully in PCI hot add scenario.
>
> This reserves all available buses (to 255) for RC's hotplug slot
> when its downstream is down so that PCI adapter can be hot added
> to the slot afterwards.
>
> Cc: stable # 5.3.0+

Merged to skiboot-5.3.x as of 2ba1d0fdcc77d480d2e5608f06aaeccb9496bc26
-- 
Stewart Smith
OPAL Architect, IBM.