1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
index 3249fe259d30..872956500c27 100644
--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -1127,7 +1127,11 @@ static void update_node_properties(struct device_node *np,
 
 /**
  *      attach_node_and_children - attaches nodes
- *      and its children to live tree
+ *      and its children to live tree.
+ *      CAUTION: misleading function name - if node @np already exists in
+ *      the live tree then children of @np are *not* attached to the live
+ *      tree.  This works for the current test devicetree nodes because such
+ *      nodes do not have child nodes.
  *
  *      @np:    Node to attach to live tree
  */