ia64/PCI: register busn_res for root buses

Add the host bridge bus number aperture from _CRS to the resource list.
Like the MMIO and I/O port apertures, this is used when assigning
resources to hot-added devices or in the case of conflicts.

[bhelgaas: changelog]
CC: Tony Luck <tony.luck@intel.com>
CC: Fenghua Yu <fenghua.yu@intel.com>
CC: linux-ia64@vger.kernel.org
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
index 3ca9bed7dc50bb908e7a05daae80f52ca2c8338d..d173a88d744aaf3310bd60247b5b1158ea3a778a 100644 (file)
--- a/arch/ia64/pci/pci.c
+++ b/arch/ia64/pci/pci.c
@@ -351,6 +351,8 @@ pci_acpi_scan_root(struct acpi_pci_root *root)
 #endif
 
        INIT_LIST_HEAD(&info.resources);
+       /* insert busn resource at first */
+       pci_add_resource(&info.resources, &root->secondary);
        acpi_walk_resources(device->handle, METHOD_NAME__CRS, count_window,
                        &windows);
        if (windows) {
@@ -384,7 +386,7 @@ pci_acpi_scan_root(struct acpi_pci_root *root)
                return NULL;
        }
 
-       pbus->busn_res.end = pci_scan_child_bus(pbus);
+       pci_scan_child_bus(pbus);
        return pbus;
 
 out3: