Re: [PATCH 3/6] PCI: Distribute available resources for root buses too

[Andy Shevchenko <andriy.shevchenko@linux.intel.com>]

On Tue, Aug 16, 2022 at 01:07:37PM +0300, Mika Westerberg wrote:
> Currently we distribute the spare resources only upon hot-add so if
> there are PCI devices connected already when the initial root bus scan
> is done, and they have not been fully configured by the BIOS, we may end
> up allocating resources just enough to cover only what is currently
> there. If some of those devices are hotplug bridges themselves we do not
> leave any additional resource space for future expansion.
> 
> For this reason distribute the available resources for root buses too to
> make this work the same way we do in the normal hotplug case.
> 
> Link: https://bugzilla.kernel.org/show_bug.cgi?id=216000
> Reported-by: Chris Chiu <chris.chiu@canonical.com>
> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
> ---
> The diffstat is quite big here but this is due the fact that we move the
> pci_assign_unassigned_root_bus_resources() below
> pci_bridge_distribute_available_resources() so we can call it without
> adding forward declaration.

Perhaps you can split to move and actual update?

-- 
With Best Regards,
Andy Shevchenko