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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>
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Johan Hovold 2017-06-06 17:58:59 +02:00 committed by Greg Kroah-Hartman
parent e271b2c909
commit 60a93cffcf
1 changed files with 2 additions and 1 deletions
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3
drivers/usb/core/of.c
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@ -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)