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authorJohan Hovold <johan@kernel.org>2017-06-06 17:58:59 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-06-13 11:07:32 +0200
commit60a93cffcffdc86222c184aafc622b53b8460427 (patch)
treef67120bb70f86ad678a6d33bf725d23fb18c489e /drivers/usb/core
parente271b2c909a22a2c13b2d5f77f2ce0091b74540c (diff)
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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>
Diffstat (limited to 'drivers/usb/core')
-rw-r--r--drivers/usb/core/of.c3
1 files changed, 2 insertions, 1 deletions
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)