pinctrl: at91-pio4: add missing of_node_put

The device node iterators perform an of_node_get on each iteration, so a
jump out of the loop requires an of_node_put.

The semantic patch that fixes this problem is as follows
(http://coccinelle.lip6.fr):

// <smpl>
@@
expression root,e;
local idexpression child;
iterator name for_each_child_of_node;
@@

 for_each_child_of_node(root, child) {
   ... when != of_node_put(child)
       when != e = child
+  of_node_put(child);
?  break;
   ...
}
... when != child
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/pinctrl/pinctrl-at91-pio4.c b/drivers/pinctrl/pinctrl-at91-pio4.c
index 4b57a13758a43b49020e8d728662f1dbd5cbf7a3..bafb3d40545e4fd5ddf26d8010601e916603097c 100644 (file)
--- a/drivers/pinctrl/pinctrl-at91-pio4.c
+++ b/drivers/pinctrl/pinctrl-at91-pio4.c
@@ -576,8 +576,10 @@ static int atmel_pctl_dt_node_to_map(struct pinctrl_dev *pctldev,
                for_each_child_of_node(np_config, np) {
                        ret = atmel_pctl_dt_subnode_to_map(pctldev, np, map,
                                                    &reserved_maps, num_maps);
-                       if (ret < 0)
+                       if (ret < 0) {
+                               of_node_put(np);
                                break;
+                       }
                }
        }