diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h
index 0b8617a..b958425 100644
--- a/include/linux/usb/serial.h
+++ b/include/linux/usb/serial.h
@@ -130,7 +130,8 @@
 	struct usb_device		*dev;
 	struct usb_serial_driver	*type;
 	struct usb_interface		*interface;
-	unsigned char			disconnected;
+	unsigned char			disconnected:1;
+	unsigned char			suspending:1;
 	unsigned char			minor;
 	unsigned char			num_ports;
 	unsigned char			num_port_pointers;