diff --git a/arch/powerpc/platforms/pseries/pci_dlpar.c b/arch/powerpc/platforms/pseries/pci_dlpar.c
index 561917fa54a8a0cb86a880ebcede34a2fdd460e7..bf4ca557c32d41b88626081c9347272c4112f9ac 100644
--- a/arch/powerpc/platforms/pseries/pci_dlpar.c
+++ b/arch/powerpc/platforms/pseries/pci_dlpar.c
@@ -89,6 +89,9 @@ int remove_phb_dynamic(struct pci_controller *phb)
 		}
 	}
 
+	/* Keep a reference so phb isn't freed yet */
+	get_device(&host_bridge->dev);
+
 	/* Remove the PCI bus and unregister the bridge device from sysfs */
 	phb->bus = NULL;
 	pci_remove_bus(b);
@@ -111,6 +114,7 @@ int remove_phb_dynamic(struct pci_controller *phb)
 	 * the pcibios_free_controller_deferred() callback;
 	 * see pseries_root_bridge_prepare().
 	 */
+	put_device(&host_bridge->dev);
 
 	return 0;
 }