Add two new facts to of_get_next_child() documentation:

   * of_get_next_child() returns NULL when there is not next child

   * of_get_next_child() decrements the refcount of prev

Signed-off-by: Baruch Siach <[email protected]>
---
 drivers/of/base.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/of/base.c b/drivers/of/base.c
index adb8764861c0..5ca5f900de9c 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -640,8 +640,9 @@ static struct device_node *__of_get_next_child(const struct 
device_node *node,
  *     @node:  parent node
  *     @prev:  previous child of the parent node, or NULL to get first
  *
- *     Returns a node pointer with refcount incremented, use
- *     of_node_put() on it when done.
+ *     Returns a node pointer with refcount incremented, use of_node_put() on
+ *     it when done. Returns NULL when prev is the last child. Decrements the
+ *     refcount of prev.
  */
 struct device_node *of_get_next_child(const struct device_node *node,
        struct device_node *prev)
-- 
2.1.4

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