Commit 60a93cff authored Jun 06, 2017 by Johan Hovold Committed by Greg Kroah-Hartman Jun 13, 2017

USB: of: document reference taken by child-lookup helper



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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent e271b2c9

drivers/usb/core/of.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -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)