> We may be taking a small risk here, but what else do you propose ? The
> problem of dangling BARs is real... One option is for me to address it
> on powerpc and leave x86 alone as it might be more of an issue with
> random crazy embedded firmware for us than it is for x86. As I said, the
> workaround is completely self contained within arch code for now.

I think the cases like the SIL680 are still covered by the comment below

> > Supporting pci_enable_device_io / pci_enable_device_mmio / pci_iomap_io /
> > pci_iomap_mmio seems to cover pretty much all the use cases we have. 
> > 
> > The users we have right now that are:
> > 
> >         - pata_cs5520   (can be dealt with easily)
> >         - old IDE       (with the new resource handling for legacy IDE
> > can use pci_enable_device_io I think, ditto pci/cs5520)
> >         - scx200_acb    (looks like a simple substitution works)
> >         - lpfc          pci_enable_device_mmio
> >         - qla2xxx       pci_enable_device ? (enables IO and MMIO)
> 
> Ok.

If we get those in I can fix up libata in no time and sort out the CS5520
devices. Rest is easy providing Bartlomiej can sort out old IDE core.
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