diff --git a/[refs] b/[refs]
index a60b81b155ca..f0ba287895fe 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: ee0db58ade2c60342a7d648f375d0a4107c39527
+refs/heads/master: 1b41c8321e495337e877ca02d0b9680bc4112eff
diff --git a/trunk/drivers/usb/core/devio.c b/trunk/drivers/usb/core/devio.c
index d8cf06f186f2..3af5e2dd1d82 100644
--- a/trunk/drivers/usb/core/devio.c
+++ b/trunk/drivers/usb/core/devio.c
@@ -286,7 +286,8 @@ static struct async *alloc_async(unsigned int numisoframes)
 static void free_async(struct async *as)
 {
 	put_pid(as->pid);
-	put_cred(as->cred);
+	if (as->cred)
+		put_cred(as->cred);
 	kfree(as->urb->transfer_buffer);
 	kfree(as->urb->setup_packet);
 	usb_free_urb(as->urb);