diff --git a/[refs] b/[refs]
index 42942ff13bbd..a05f4d6f77b2 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: f26fd5d6e5006eae75a389c7ce74ed16761d094b
+refs/heads/master: 9adb8c1d4f0ac78b3469e377ce5f8a846cbaedaf
diff --git a/trunk/drivers/s390/cio/cio.c b/trunk/drivers/s390/cio/cio.c
index 5954b905e3ca..326f4cc7f92c 100644
--- a/trunk/drivers/s390/cio/cio.c
+++ b/trunk/drivers/s390/cio/cio.c
@@ -174,6 +174,7 @@ cio_start_key (struct subchannel *sch,	/* subchannel structure */
 	CIO_TRACE_EVENT(4, sch->dev.bus_id);
 
 	orb = &to_io_private(sch)->orb;
+	memset(orb, 0, sizeof(union orb));
 	/* sch is always under 2G. */
 	orb->cmd.intparm = (u32)(addr_t)sch;
 	orb->cmd.fmt = 1;