[PATCH 15/21] ia64/PCI: register busn_res for root buses

[PATCH 15/21] ia64/PCI: register busn_res for root buses

[Yinghai Lu]

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: write changelog]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: linux-ia64@vger.kernel.org
---
 arch/ia64/pci/pci.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
index 3ca9bed..d173a88 100644
--- 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:
-- 
1.7.7