1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/infiniband/ulp/ipoib/ipoib_ib.c b/drivers/infiniband/ulp/ipoib/ipoib_ib.c
index 54ef2fea530f..23885801b6d2 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_ib.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_ib.c
@@ -608,9 +608,13 @@ void ipoib_ib_dev_flush(void *_dev)
         if (test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags))
                 ipoib_ib_dev_up(dev);
 
+        down(&priv->vlan_mutex);
+
         /* Flush any child interfaces too */
         list_for_each_entry(cpriv, &priv->child_intfs, list)
                 ipoib_ib_dev_flush(&cpriv->dev);
+
+        up(&priv->vlan_mutex);
 }
 
 void ipoib_ib_dev_cleanup(struct net_device *dev)