microblaze/PCI: Clip bridge windows to fit in upstream windows

[android-x86/kernel.git] / arch / microblaze / pci / pci-common.c

diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index b30e41c..48528fb 100644 (file)
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c
@@ -1026,6 +1026,8 @@ static void pcibios_allocate_bus_resources(struct pci_bus *bus)
                         pr, (pr && pr->name) ? pr->name : "nil");
 
                if (pr && !(pr->flags & IORESOURCE_UNSET)) {
+                       struct pci_dev *dev = bus->self;
+
                        if (request_resource(pr, res) == 0)
                                continue;
                        /*
@@ -1035,6 +1037,12 @@ static void pcibios_allocate_bus_resources(struct pci_bus *bus)
                         */
                        if (reparent_resources(pr, res) == 0)
                                continue;
+
+                       if (dev && i < PCI_BRIDGE_RESOURCE_NUM &&
+                           pci_claim_bridge_resource(dev,
+                                                i + PCI_BRIDGE_RESOURCES) == 0)
+                               continue;
+
                }
                pr_warn("PCI: Cannot allocate resource region ");
                pr_cont("%d of PCI bridge %d, will remap\n", i, bus->number);
@@ -1227,7 +1235,10 @@ void pcibios_claim_one_bus(struct pci_bus *bus)
                                 (unsigned long long)r->end,
                                 (unsigned int)r->flags);
 
-                       pci_claim_resource(dev, i);
+                       if (pci_claim_resource(dev, i) == 0)
+                               continue;
+
+                       pci_claim_bridge_resource(dev, i);
                }
        }