Feb. 9, 2021
2:45 p.m.
On Tue, Feb 09, 2021 at 09:44:03AM -0500, Evan T Mesterhazy wrote:
It turns out, after building 14 different commits between v5.8 and v5.9, that a three line change in drivers/pci/controller/pci-xgene.c breaks PCI on this machine. If I revert this file and build the commit that changed it, PCI works properly. No config options changed between these commits.
I suppose now it's just a matter of figuring out why this change breaks it, and how it can be fixed and applied to 5.9+.
Please let the upstream developers of that change, and the mailing list associated with it, know about this regression so they can help you out in resolving it. thanks, greg k-h