[RFC/RFT PATCH 05/18] ARM: PCI: dove: Convert PCI scan API to pci_scan_root_bus_bridge()

[Arnd Bergmann]

On Fri, Apr 28, 2017 at 2:38 PM, Arnd Bergmann <arnd at arndb.de> wrote:
> On Wed, Apr 26, 2017 at 1:17 PM, Lorenzo Pieralisi
> <lorenzo.pieralisi at arm.com> wrote:
>> The introduction of pci_scan_root_bus_bridge() provides a PCI core
>> API to scan a PCI root bus backed by an already initialized
>> struct pci_host_bridge object, which simplifies the bus scan
>> interface and makes the PCI scan root bus interface easier to
>> generalize as members are added to the struct pci_host_bridge().
>>
>> Convert ARM dove platform code to pci_scan_root_bus_bridge() to improve
>> the PCI root bus scanning interface.
>>
>> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi at arm.com>
>
> Is this patch required for one of the later steps in the series?
>
> As non-DT dove uses the traditional pci_common_init() helper rather
> than registering its own driver, I wonder if there is anything to gain here.

Thinking about it some more, if we make the change to allocate from
pcibios_init_hw(), we can also initialize most of the fields there and
do the cleanup in common code when the scan callback fails, which
in turn makes the changes in arch/arm/mach*/pci.c drivers very simple.

        Arnd