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-rw-r--r--drivers/of/unittest.c6
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
*/