[PATCH v2 2/7] USB: of: document reference taken by child-lookup helper

[Johan Hovold <johan@kernel.org>]

Document that the child-node lookup helper takes a reference to the
device-tree node which needs to be dropped after use.

Signed-off-by: Johan Hovold <johan@kernel.org>
---
 drivers/usb/core/of.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/core/of.c b/drivers/usb/core/of.c
index d563cbcf76cf..3863bb1ce8c5 100644
--- a/drivers/usb/core/of.c
+++ b/drivers/usb/core/of.c
@@ -28,7 +28,8 @@
  *
  * Find the node from device tree according to its port number.
  *
- * Return: On success, a pointer to the device node, %NULL on failure.
+ * Return: A pointer to the node with incremented refcount if found, or
+ * %NULL otherwise.
  */
 struct device_node *usb_of_get_child_node(struct device_node *parent,
 					int portnum)
-- 
2.13.0