diff --git a/include/linux/pci.h b/include/linux/pci.h
index 38eff19..9010f54 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -278,6 +278,7 @@
 	struct device		dev;
 	struct bin_attribute	*legacy_io; /* legacy I/O for this bus */
 	struct bin_attribute	*legacy_mem; /* legacy mem */
+	unsigned int		is_added:1;
 };
 
 #define pci_bus_b(n)	list_entry(n, struct pci_bus, node)