diff --git a/[refs] b/[refs]
index 4a6dac8ad21b..fe29d0589d35 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 682d4c803f646d2ce09fde9ed7e99015598c3298
+refs/heads/master: e9aa795aaed0b861aaa5a8075748c9c34e2620ee
diff --git a/trunk/drivers/usb/core/urb.c b/trunk/drivers/usb/core/urb.c
index 081796726b95..dad4d8fd8180 100644
--- a/trunk/drivers/usb/core/urb.c
+++ b/trunk/drivers/usb/core/urb.c
@@ -468,6 +468,7 @@ int usb_unlink_urb(struct urb *urb)
  */
 void usb_kill_urb(struct urb *urb)
 {
+	might_sleep();
 	if (!(urb && urb->dev && urb->dev->bus && urb->dev->bus->op))
 		return;
 	spin_lock_irq(&urb->lock);