On Wednesday 09 July 2014, Liviu Dudau wrote: > > Maybe that assumption is guaranteed by OF, but it doesn't hold for ACPI; > > ACPI can describe several I/O port apertures for a single bridge, each > > associated with a different CPU physical memory region. > > That is actually a good catch, I've completely missed the fact that > io_range->pci_addr could be non-zero. Hmm, that's what I thought in my initial review, but you convinced me that it's actually correct later on, and I still believe it is. Maybe now you got confused by your own code? Please have another look, I think your code in pci_host_bridge_of_get_ranges sufficiently handles the registration to the PCI code with the correct io_offset. The only thing that we might want to add is to record the PCI address along with the bridge->io_base: For the host driver to set up the mapping window correctly, you either need both of them, or you assume they are already set up. Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
