diff --git a/[refs] b/[refs]
index c39006fe0c3a..8257d7f45236 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 65bfd2967c906ca322a4bb69a285fe0de8916ac6
+refs/heads/master: 619b572ae205cea26b147c2cec5ebf19974f4bb0
diff --git a/trunk/drivers/usb/serial/usb_debug.c b/trunk/drivers/usb/serial/usb_debug.c
index fc5d9952b03b..6c9cbb59552a 100644
--- a/trunk/drivers/usb/serial/usb_debug.c
+++ b/trunk/drivers/usb/serial/usb_debug.c
@@ -31,7 +31,7 @@ static struct usb_driver debug_driver = {
 	.no_dynamic_id = 	1,
 };
 
-int usb_debug_open(struct tty_struct *tty, struct usb_serial_port *port,
+static int usb_debug_open(struct tty_struct *tty, struct usb_serial_port *port,
 							struct file *filp)
 {
 	port->bulk_out_size = USB_DEBUG_MAX_PACKET_SIZE;