linux-kernel - [PATCH 3/3] drivers/serial/uartlite.c: Add missing of_node

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Date:	Sun, 2 Dec 2007 21:06:54 +0100 (CET)
From:	Julia Lawall <julia@...u.dk>
To:	jacmet@...site.dk, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: [PATCH 3/3] drivers/serial/uartlite.c: Add missing of_node_put

From: Julia Lawall <julia@...u.dk>

There should be an of_node_put when breaking out of a loop that iterates
using for_each_compatible_node.

This was detected and fixed using the following semantic patch.
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
identifier d;
type T;
expression e;
iterator for_each_compatible_node;
@@

T *d;
...
for_each_compatible_node(d,...)
  {... when != of_node_put(d)
       when != e = d
(
   return d;
|
+  of_node_put(d);
?  return ...;
)
...}
// </smpl>

Signed-off-by: Julia Lawall <julia@...u.dk>
---

diff -u -p a/drivers/serial/uartlite.c b/drivers/serial/uartlite.c
--- a/drivers/serial/uartlite.c 2007-11-12 10:35:57.000000000 +0100
+++ b/drivers/serial/uartlite.c 2007-12-02 17:43:57.000000000 +0100
@@ -393,6 +393,7 @@ static inline void __init ulite_console_
 			continue;
 
 		ulite_ports[id].mapbase = res.start;
+		of_node_put(np);
 		return;
 	}
 }
--
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