diff --git a/[refs] b/[refs]
index 1ac10b1db8d2..e57be55d8224 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 8ab10400a037a516cc846c338f879e5bd62497ce
+refs/heads/master: c9c4558f7874676e31ea7a74caafcf09ebbc03ed
diff --git a/trunk/drivers/usb/serial/usb_wwan.c b/trunk/drivers/usb/serial/usb_wwan.c
index b004b2a485c3..7bd06854f872 100644
--- a/trunk/drivers/usb/serial/usb_wwan.c
+++ b/trunk/drivers/usb/serial/usb_wwan.c
@@ -305,11 +305,16 @@ static void usb_wwan_indat_callback(struct urb *urb)
 		/* Resubmit urb so we continue receiving */
 		if (status != -ESHUTDOWN) {
 			err = usb_submit_urb(urb, GFP_ATOMIC);
-			if (err && err != -EPERM)
-				printk(KERN_ERR "%s: resubmit read urb failed. "
-				       "(%d)", __func__, err);
-			else
+			if (err) {
+				if (err != -EPERM) {
+					printk(KERN_ERR "%s: resubmit read urb failed. "
+						"(%d)", __func__, err);
+					/* busy also in error unless we are killed */
+					usb_mark_last_busy(port->serial->dev);
+				}
+			} else {
 				usb_mark_last_busy(port->serial->dev);
+			}
 		}
 
 	}