diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c
index e3851359d6537ed7d7b55a67672e621b52dd4f7f..f1b886c204c0c2ceb51d006681285b270643f3f5 100644
--- a/drivers/usb/misc/usbtest.c
+++ b/drivers/usb/misc/usbtest.c
@@ -1992,8 +1992,6 @@ static void usbtest_disconnect (struct usb_interface *intf)
 {
 	struct usbtest_dev	*dev = usb_get_intfdata (intf);
 
-	mutex_lock(&dev->lock);
-
 	usb_set_intfdata (intf, NULL);
 	dev_dbg (&intf->dev, "disconnect\n");
 	kfree (dev);