On Mon, 2008-01-28 at 08:50 +1100, Linus Torvalds wrote: > > On Sun, 27 Jan 2008, Avuton Olrich wrote: > > > > With v2.6.24 my second ALSA sound device stopped working. > > Hmm. Why is PnP ACPI called before PCI probing? That seems to be the > problem here - we should *never* have any firmware allocation block known > hardware BARs, they should only be blocking new dynamic allocations. > > Hmm. I wonder if the problem is that ACPIPnP marks the regions busy. That > would be wrong. They shouldn't be busy, they should just "exist". > > A busy region will stop a "request_region()" (incorrect for this case - > thats' not what the PnP resurce allocation should be all about), but an > *existing* resource will just stop a new resource being dynamically > assigned to that address (not not stop a known resource from using it). > > So maybe the ACPIPnP allocation is doen at the right moment, just doing > the wrong thing.. This is because the region is declaimed in motherboard device. That is BIOS thinks the region is reserved for motherboard. Maybe we should blacklist the system too.
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