fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / drivers / pci / setup-bus.c

diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 47c1071..89f3036 100644 (file)
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -41,7 +41,7 @@
  * have a P2P bridge below a cardbus bridge, we need 4K.
  */
 #define CARDBUS_IO_SIZE                (256)
-#define CARDBUS_MEM_SIZE       (32*1024*1024)
+#define CARDBUS_MEM_SIZE       (64*1024*1024)
 
 static void __devinit
 pbus_assign_resources_sorted(struct pci_bus *bus)
@@ -57,10 +57,17 @@ pbus_assign_resources_sorted(struct pci_bus *bus)
 
                /* Don't touch classless devices or host bridges or ioapics.  */
                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 ioapic devices already enabled by firmware */
+               if (class == PCI_CLASS_SYSTEM_PIC) {
+                       u16 command;
+                       pci_read_config_word(dev, PCI_COMMAND, &command);
+                       if (command & (PCI_COMMAND_IO | PCI_COMMAND_MEMORY))
+                               continue;
+               }
+
                pdev_sort_resources(dev, &head);
        }