On Sun, 23 Mar 2025, Krzysztof Wilczyński wrote: > Hello, > > > The patch is working, no kernel crashes and shutting down after hotplugging the Thunderbolt 4 dock does not hang anymore, thanks! > > Thank you for testing! Appreciated! > > > I still see messages in the kernel log that 'devices behind bridge are > > unusable' because 'no bus can be assigned to them', 'Hotplug bridge > > without secondary bus, ignoring', etc. These all refer to the > > Thunderbolt 4 bridge. Adding "pci=hpbussize=0x33" to the kernel > > doesn't make a difference. Adding > > "pci=realloc,asssign-busses,hpbussize=0x33" actually does 'fix' the Hi, Hmm, it seems this reply got stuck into postponed messages so sending it only now. There's a typo (3 x s) in the value, perhaps just for the email as it worked. > > bus allocation failures (or at least I don't see any messages in the > > log anymore), but then amdgpu fails to initialize the IGP. That is very likely independent issue. I can try to look at it if it's some resource assignment related problem that occurs with pci=realloc. Please could you take a dmesg with this added into the kernel command line: dyndbg="file drivers/pci/*.c +p" I might also benefit from contents /proc/iomem if it turns out to be a resource assignment problem but we'll see. -- i. > We can fix any outstanding issues or drop this patch. I leave it to hot > plug experts like Ilpo, Bjorn and Lukas to make the call here. > > > Anyway, all devices connected to the Thunderbolt 4 dock appear to work (USB, screens, ethernet) even despite these bus allocation failures, so I will just ignore them. > > > > Thanks again! > > Would you be happy to provide your "Tested-by:" tag? > > Krzysztof >
