for_each_compatible_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 e;
local idexpression n;
@@

@@
local idexpression n;
expression e;
@@

 for_each_compatible_node(n,...) {
   ...
(
   of_node_put(n);
|
   e = n
|
+  of_node_put(n);
?  break;
)
   ...
 }
... when != n
// </smpl>

Signed-off-by: Julia Lawall <julia.law...@lip6.fr>

---
 arch/powerpc/platforms/embedded6xx/hlwd-pic.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/platforms/embedded6xx/hlwd-pic.c 
b/arch/powerpc/platforms/embedded6xx/hlwd-pic.c
index 9b79757..b581b42 100644
--- a/arch/powerpc/platforms/embedded6xx/hlwd-pic.c
+++ b/arch/powerpc/platforms/embedded6xx/hlwd-pic.c
@@ -215,6 +215,7 @@ void hlwd_pic_probe(void)
                        irq_set_chained_handler(cascade_virq,
                                                hlwd_pic_irq_cascade);
                        hlwd_irq_host = host;
+                       of_node_put(np);
                        break;
                }
        }

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