[POWERPC] iSeries: Reduce dependence on pci_dn bussubno

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 9 insertions, 9 deletions

diff --git a/arch/powerpc/platforms/iseries/pci.c b/arch/powerpc/platforms/iseries/pci.c
index b46d8c5709f2..7e00e35b86d0 100644
--- a/arch/powerpc/platforms/iseries/pci.c
+++ b/arch/powerpc/platforms/iseries/pci.c
@@ -190,6 +190,7 @@ void __init iSeries_pci_final_fixup(void)
         for_each_pci_dev(pdev) {
                 struct pci_dn *pdn;
                 const u32 *agent;
+                const u32 *sub_bus;
 
                 node = find_device_node(pdev->bus->number, pdev->devfn);
                 printk("pci dev %p (%x.%x), node %p\n", pdev,
@@ -202,23 +203,23 @@ void __init iSeries_pci_final_fixup(void)
 
                 pdn = PCI_DN(node);
                 agent = of_get_property(node, "linux,agent-id", NULL);
-                if (pdn && agent) {
-                        u8 irq = iSeries_allocate_IRQ(pdn->busno, 0,
-                                        pdn->bussubno);
+                sub_bus = of_get_property(node, "linux,subbus", NULL);
+                if (pdn && agent && sub_bus) {
+                        u8 irq = iSeries_allocate_IRQ(pdn->busno, 0, *sub_bus);
                         int err;
 
-                        err = HvCallXm_connectBusUnit(pdn->busno, pdn->bussubno,
+                        err = HvCallXm_connectBusUnit(pdn->busno, *sub_bus,
                                         *agent, irq);
                         if (err)
                                 pci_log_error("Connect Bus Unit",
-                                        pdn->busno, pdn->bussubno, *agent, err);
+                                        pdn->busno, *sub_bus, *agent, err);
                         else {
                                 err = HvCallPci_configStore8(pdn->busno,
-                                        pdn->bussubno, *agent,
+                                        *sub_bus, *agent,
                                         PCI_INTERRUPT_LINE, irq);
                                 if (err)
                                         pci_log_error("PciCfgStore Irq Failed!",
-                                                pdn->busno, pdn->bussubno,
+                                                pdn->busno, *sub_bus,
                                                 *agent, err);
                                 else
                                         pdev->irq = irq;
@@ -229,8 +230,7 @@ void __init iSeries_pci_final_fixup(void)
                 pdev->sysdata = node;
                 PCI_DN(node)->pcidev = pdev;
                 allocate_device_bars(pdev);
-                iSeries_Device_Information(pdev, num_dev, pdn->busno,
-                                pdn->bussubno);
+                iSeries_Device_Information(pdev, num_dev, pdn->busno, *sub_bus);
                 iommu_devnode_init_iSeries(pdev, node);
         }
         iSeries_activate_IRQs();