1 files changed, 33 insertions, 5 deletions

diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
index e3fc4edea11..720a861f88b 100644
--- a/arch/ia64/pci/pci.c
+++ b/arch/ia64/pci/pci.c
@@ -312,7 +312,7 @@ pci_acpi_scan_root(struct acpi_device *device, int domain, int bus)
         acpi_walk_resources(device->handle, METHOD_NAME__CRS, add_window,
                         &info);
 
-        pbus = pci_scan_bus(bus, &pci_root_ops, controller);
+        pbus = pci_scan_bus_parented(NULL, bus, &pci_root_ops, controller);
         if (pbus)
                 pcibios_setup_root_windows(pbus, controller);
 
@@ -373,6 +373,25 @@ void pcibios_bus_to_resource(struct pci_dev *dev,
         res->end = region->end + offset;
 }
 
+static int __devinit is_valid_resource(struct pci_dev *dev, int idx)
+{
+        unsigned int i, type_mask = IORESOURCE_IO | IORESOURCE_MEM;
+        struct resource *devr = &dev->resource[idx];
+
+        if (!dev->bus)
+                return 0;
+        for (i=0; i<PCI_BUS_NUM_RESOURCES; i++) {
+                struct resource *busr = dev->bus->resource[i];
+
+                if (!busr || ((busr->flags ^ devr->flags) & type_mask))
+                        continue;
+                if ((devr->start) && (devr->start >= busr->start) &&
+                                (devr->end <= busr->end))
+                        return 1;
+        }
+        return 0;
+}
+
 static void __devinit pcibios_fixup_device_resources(struct pci_dev *dev)
 {
         struct pci_bus_region region;
@@ -386,7 +405,8 @@ static void __devinit pcibios_fixup_device_resources(struct pci_dev *dev)
                 region.start = dev->resource[i].start;
                 region.end = dev->resource[i].end;
                 pcibios_bus_to_resource(dev, &dev->resource[i], &region);
-                pci_claim_resource(dev, i);
+                if ((is_valid_resource(dev, i)))
+                        pci_claim_resource(dev, i);
         }
 }
 
@@ -398,6 +418,10 @@ pcibios_fixup_bus (struct pci_bus *b)
 {
         struct pci_dev *dev;
 
+        if (b->self) {
+                pci_read_bridge_bases(b);
+                pcibios_fixup_device_resources(b->self);
+        }
         list_for_each_entry(dev, &b->devices, bus_list)
                 pcibios_fixup_device_resources(dev);
 
@@ -418,18 +442,24 @@ pcibios_enable_resources (struct pci_dev *dev, int mask)
         u16 cmd, old_cmd;
         int idx;
         struct resource *r;
+        unsigned long type_mask = IORESOURCE_IO | IORESOURCE_MEM;
 
         if (!dev)
                 return -EINVAL;
 
         pci_read_config_word(dev, PCI_COMMAND, &cmd);
         old_cmd = cmd;
-        for (idx=0; idx<6; idx++) {
+        for (idx=0; idx<PCI_NUM_RESOURCES; idx++) {
                 /* Only set up the desired resources.  */
                 if (!(mask & (1 << idx)))
                         continue;
 
                 r = &dev->resource[idx];
+                if (!(r->flags & type_mask))
+                        continue;
+                if ((idx == PCI_ROM_RESOURCE) &&
+                                (!(r->flags & IORESOURCE_ROM_ENABLE)))
+                        continue;
                 if (!r->start && r->end) {
                         printk(KERN_ERR
                                "PCI: Device %s not available because of resource collisions\n",
@@ -441,8 +471,6 @@ pcibios_enable_resources (struct pci_dev *dev, int mask)
                 if (r->flags & IORESOURCE_MEM)
                         cmd |= PCI_COMMAND_MEMORY;
         }
-        if (dev->resource[PCI_ROM_RESOURCE].start)
-                cmd |= PCI_COMMAND_MEMORY;
         if (cmd != old_cmd) {
                 printk("PCI: Enabling device %s (%04x -> %04x)\n", pci_name(dev), old_cmd, cmd);
                 pci_write_config_word(dev, PCI_COMMAND, cmd);