Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6

* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6: (28 commits)
  pciehp - fix wrong return value
  IA64: PCI: dont disable irq which is not enabled
  acpiphp: add support for ioapic hot-remove
  PCI: assign ioapic resource at hotplug
  acpiphp: disable bridges
  acpiphp: stop bus device before acpi_bus_trim
  PCI: add pci_stop_bus_device
  acpiphp: do not initialize existing ioapics
  acpiphp: initialize ioapics before starting devices
  acpiphp: set hpp values before starting devices
  PCI Hotplug: cleanup pcihp skeleton code.
  PCI: Restore PCI Express capability registers after PM event
  PCI: drivers/pci/hotplug/acpiphp_glue.c: make a function static
  PCI: Multiprobe sanitizer
  PCI: fix __must_check warnings
  PCI Hotplug: fix __must_check warnings
  SHPCHP: fix __must_check warnings
  PCI-Express AER implemetation: pcie_portdrv error handler
  PCI-Express AER implemetation: AER core and aerdriver
  PCI-Express AER implemetation: export pcie_port_bus_type
  ...

1 files changed, 10 insertions, 3 deletions

diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 47c1071ad84e..54404917be9a 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -55,12 +55,19 @@ pbus_assign_resources_sorted(struct pci_bus *bus)
         list_for_each_entry(dev, &bus->devices, bus_list) {
                 u16 class = dev->class >> 8;
 
-                /* Don't touch classless devices or host bridges or ioapics.  */
+                /* Don't touch classless devices or host bridges. */
                 if (class == PCI_CLASS_NOT_DEFINED ||
-                    class == PCI_CLASS_BRIDGE_HOST ||
-                    class == PCI_CLASS_SYSTEM_PIC)
+                    class == PCI_CLASS_BRIDGE_HOST)
                         continue;
 
+                /* Don't touch ioapics if it has the assigned resources. */
+                if (class == PCI_CLASS_SYSTEM_PIC) {
+                        res = &dev->resource[0];
+                        if (res[0].start || res[1].start || res[2].start ||
+                            res[3].start || res[4].start || res[5].start)
+                                continue;
+                }
+
                 pdev_sort_resources(dev, &head);
         }