drivers/video/fsl-diu-fb.c: add missing of_node_put

of_node_put is needed before discarding a value received from
of_find_node_by_type, eg in error handling code.

The semantic patch that makes the change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
struct device_node *n;
struct device_node *n1;
struct device_node *n2;
statement S;
identifier f1,f2;
expression E1,E2;
constant C;
@@

n = of_find_node_by_type(...)
...
if (!n) S
... when != of_node_put(n)
    when != n1 = f1(n,...)
    when != E1 = n
    when any
    when strict
(
+ of_node_put(n);
  return -C;
|
  of_node_put(n);
|
  n2 = f2(n,...)
|
  E2 = n
|
  return ...;
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Cc: Timur Tabi <timur@freescale.com>
Cc: York Sun <yorksun@freescale.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/video/fsl-diu-fb.c b/drivers/video/fsl-diu-fb.c
index 9cd36c2..bd320a2 100644 (file)
--- a/drivers/video/fsl-diu-fb.c
+++ b/drivers/video/fsl-diu-fb.c
@@ -1649,8 +1649,10 @@ static int __init fsl_diu_init(void)
        }
 
        prop = of_get_property(np, "d-cache-size", NULL);
-       if (prop == NULL)
+       if (prop == NULL) {
+               of_node_put(np);
                return -ENODEV;
+       }
 
        /* Freescale PLRU requires 13/8 times the cache size to do a proper
           displacement flush
@@ -1659,8 +1661,10 @@ static int __init fsl_diu_init(void)
        coherence_data_size /= 8;
 
        prop = of_get_property(np, "d-cache-line-size", NULL);
-       if (prop == NULL)
+       if (prop == NULL) {
+               of_node_put(np);
                return -ENODEV;
+       }
        d_cache_line_size = *prop;
 
        of_node_put(np);