On Wed, Dec 1, 2021 at 9:24 PM Bjorn Helgaas [off-list ref] wrote:

On Fri, Nov 19, 2021 at 05:20:17PM -0600, Bjorn Helgaas wrote:

quoted

Arnd added this with 37d6a0a6f470 ("PCI: Add
pci_register_host_bridge() interface") [1].

I can't remember why this was done, but we did go to some trouble to
move things around, so there must have been a good reason.

Arnd or Thierry, do you remember?

Nobody seems to remember, so I think we should go ahead and make this
change after the usual due diligence (audit the code between the old
site and the new site to look for any uses of bridge->windows).

I think this would be material for v5.17.

Sorry I forgot to reply to your earlier mail. I think this is fine, as far as I
remember, the only reason the bridge windows are moved from the list
and added back one at a time was to preserve the exact orderorks.

We could probably even skip that step entirely and iterate throughing
that was there originally, to keep the behavior after a series of reworks.

We could probably even skip that step entirely and iterate through
bridge->windows instead of the local list to simplify this.

For Sergio's patch:

Acked-by: Arnd Bergmann <arnd@arndb.de>