leds: bcm6358: add missing of_node_put
authorJulia Lawall <Julia.Lawall@lip6.fr>
Sat, 24 Oct 2015 14:42:28 +0000 (16:42 +0200)
committerJacek Anaszewski <j.anaszewski@samsung.com>
Tue, 3 Nov 2015 08:00:02 +0000 (09:00 +0100)
for_each_available_child_of_node performs an of_node_get on each
iteration, so a break out of the loop requires an of_node_put.

A simplified version of the semantic patch that fixes this problem is as
follows (http://coccinelle.lip6.fr):

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

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

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
drivers/leds/leds-bcm6358.c

index 7ea3526702e0c56b2a841e0bf2d2dccbe3f606f6..82b4ee1bc87e03e3df18fe5e044270c0996b18a5 100644 (file)
@@ -215,8 +215,10 @@ static int bcm6358_leds_probe(struct platform_device *pdev)
                }
 
                rc = bcm6358_led(dev, child, reg, mem, lock);
-               if (rc < 0)
+               if (rc < 0) {
+                       of_node_put(child);
                        return rc;
+               }
        }
 
        return 0;