[RFC v4 4/7] PCI: hv: Generify PCI probing

[Bjorn Helgaas]

On Wed, Jul 14, 2021 at 06:27:34PM +0800, Boqun Feng wrote:
> From: Arnd Bergmann <arnd at arndb.de>
> 
> In order to support ARM64 Hyper-V PCI, we need to set up the bridge at
> probing time because ARM64 is a PCI_DOMAIN_GENERIC arch and we don't
> have pci_config_window (ARM64 sysdata) for a PCI root bus on Hyper-V, so
> it's impossible to retrieve the information (e.g. PCI domains, irq
> domains) from bus sysdata on ARM64 after creation.
> 
> Originally in create_root_hv_pci_bus(), pci_create_root_bus() is used to
> create the root bus and the corresponding bridge based on x86 sysdata.
> Now we create a bridge first and then call pci_scan_root_bus_bridge(),
> which allows us to do the necessary set-ups for the bridge.

Also here and other patches in this series:

  s/irq/IRQ/
  s/msi/MSI/

in subject lines, commit logs, comments.