From 5daf47bb4e708fde32c1856a0d049e3c3d03c36c Mon Sep 17 00:00:00 2001
From: Julia Lawall <julia@diku.dk>
Date: Wed, 26 May 2010 05:54:21 +0000
Subject: net/rds: Add missing mutex_unlock

Add a mutex_unlock missing on the error path.  In each case, whenever the
label out is reached from elsewhere in the function, mutex is not locked.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression E1;
@@

* mutex_lock(E1);
  <+... when != E1
  if (...) {
    ... when != E1
*   return ...;
  }
  ...+>
* mutex_unlock(E1);
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Reviewed-by: Zach Brown <zach.brown@oracle.com>
Acked-by: Andy Grover <andy.grover@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 net/rds/iw_cm.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'net/rds/iw_cm.c')

diff --git a/net/rds/iw_cm.c b/net/rds/iw_cm.c
index a9d951b4fbae..b5dd6ac39be8 100644
--- a/net/rds/iw_cm.c
+++ b/net/rds/iw_cm.c
@@ -452,6 +452,7 @@ int rds_iw_cm_handle_connect(struct rdma_cm_id *cm_id,
 	err = rds_iw_setup_qp(conn);
 	if (err) {
 		rds_iw_conn_error(conn, "rds_iw_setup_qp failed (%d)\n", err);
+		mutex_unlock(&conn->c_cm_lock);
 		goto out;
 	}
 
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