On Fri, May 31, 2013 at 11:03 PM, Yinghai Lu <yinghai@xxxxxxxxxx> wrote: > BenH reported that there is some assign unassigned resource problem > in powerpc. > > It turns out after > | commit 0c5be0cb0edfe3b5c4b62eac68aa2aa15ec681af > | Date: Thu Feb 23 19:23:29 2012 -0800 > | > | PCI: Retry on IORESOURCE_IO type allocations > > even the root bus does not have io port range, it will keep retrying > to realloc with mmio. > > After checking the code, found that we bound io port and mmio fail > path together. > First patch fix the problem, that will not make mmio fall back to must-only > when only have io port fail with must+optional. > > During we found the fix for that problem, found that we can separate assign > unassigned resources to per root bus. > that will make the code simple, also could reuse it for hotadd path. > > These patches are targeted to 3.11 > > -v4: split first patch into 4 patches per Bjorn. > -v5: drop two patches that will pass root bus resource mask after we found > simple and less intrusive way to fix the problem. > > PCI: Don't let mmio fallback to must-only, if ioport fails with must+optional > PCI: Don't use temp bus for pci_bus_release_bridge_resources > PCI: Use pci_walk_bus to detect unassigned resources > PCI: Introduce enable_local to prepare per root bus handling > PCI: Split pci_assign_unassigned_resources to per root bus > PCI: Enable pci bridge when it is needed > PCI: Retry assign unassigned resources for hotadd root bus Hi, Bjorn, Can you put this patchset in pci/next for 3.11? Found another pciehp will need this one two. the pcie bridge does not have io port range and it cause mmio get clear and retry. Thanks Yinghai -- 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
