of/platform: clarify of_find_device_by_node refcounting
Add comment clarifying that of_find_device_by_node() takes a reference
to the embedded struct device which needs to be dropped after use.
Note that most current users fail to do so.
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index cb4c780..b8064bc 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -45,6 +45,9 @@ static int of_dev_node_match(struct device *dev, void *data)
* of_find_device_by_node - Find the platform_device associated with a node
* @np: Pointer to device tree node
*
+ * Takes a reference to the embedded struct device which needs to be dropped
+ * after use.
+ *
* Returns platform_device pointer, or NULL if not found
*/
struct platform_device *of_find_device_by_node(struct device_node *np)