diff --git a/[refs] b/[refs]
index af8959ecf012..48511b625240 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 1fc3858a6358400195c067f8726cf3c86a180d80
+refs/heads/master: a5569a565f7315fe7241cf963f2cc74e53871e11
diff --git a/trunk/drivers/usb/serial/keyspan.c b/trunk/drivers/usb/serial/keyspan.c
index feba9679ace8..7c069a02c1dd 100644
--- a/trunk/drivers/usb/serial/keyspan.c
+++ b/trunk/drivers/usb/serial/keyspan.c
@@ -447,7 +447,7 @@ static void	usa26_indat_callback(struct urb *urb)
 
 	port = (struct usb_serial_port *) urb->context;
 	tty = port->tty;
-	if (urb->actual_length) {
+	if (tty && urb->actual_length) {
 		/* 0x80 bit is error flag */
 		if ((data[0] & 0x80) == 0) {
 			/* no errors on individual bytes, only possible overrun err*/