[PATCH] PCI Hotplug: fix CPCI reference counting bug

Here's a patch that fixes up the pci_dev refcounting in the CPCI code.
I've done some testing against it and it seems fine here.

Signed-off-by: Scott Murray <scottm@somanetworks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/pci/hotplug/cpci_hotplug_core.c

@@ -217,6 +217,8 @@ static void release_slot(struct hotplug_slot *hotplug_slot)
 	kfree(slot->hotplug_slot->info);
 	kfree(slot->hotplug_slot->name);
 	kfree(slot->hotplug_slot);
+	if (slot->dev)
+		pci_dev_put(slot->dev);
 	kfree(slot);
 }
 

drivers/pci/hotplug/cpci_hotplug_pci.c

@@ -315,9 +315,12 @@ int cpci_unconfigure_slot(struct slot* slot)
 				    PCI_DEVFN(PCI_SLOT(slot->devfn), i));
 		if (dev) {
 			pci_remove_bus_device(dev);
-			slot->dev = NULL;
+			pci_dev_put(dev);
 		}
 	}
+	pci_dev_put(slot->dev);
+	slot->dev = NULL;
+
 	dbg("%s - exit", __FUNCTION__);
 	return 0;
 }