From 1f7aac6eb585f92756603341cb1d770c797c4867 Mon Sep 17 00:00:00 2001
From: Julia Lawall
Date: Sat, 28 Aug 2010 23:52:40 +0000
Subject: powerpc/via-pmu-led.c: Add of_node_put to avoid memory leak
Add a call to of_node_put in the error handling code following a call to
of_find_node_by_path.
The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)
//
@r exists@
local idexpression x;
expression E,E1;
statement S;
@@
*x =
(of_find_node_by_path
|of_find_node_by_name
|of_find_node_by_phandle
|of_get_parent
|of_get_next_parent
|of_get_next_child
|of_find_compatible_node
|of_match_node
)(...);
...
if (x == NULL) S
<... when != x = E
*if (...) {
... when != of_node_put(x)
when != if (...) { ... of_node_put(x); ... }
(
return <+...x...+>;
|
* return ...;
)
}
...>
of_node_put(x);
//
Signed-off-by: Julia Lawall
Signed-off-by: Benjamin Herrenschmidt
---
drivers/macintosh/via-pmu-led.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
(limited to 'drivers/macintosh')
diff --git a/drivers/macintosh/via-pmu-led.c b/drivers/macintosh/via-pmu-led.c
index d242976bcfe7..19c371809d77 100644
--- a/drivers/macintosh/via-pmu-led.c
+++ b/drivers/macintosh/via-pmu-led.c
@@ -92,8 +92,10 @@ static int __init via_pmu_led_init(void)
if (dt == NULL)
return -ENODEV;
model = of_get_property(dt, "model", NULL);
- if (model == NULL)
+ if (model == NULL) {
+ of_node_put(dt);
return -ENODEV;
+ }
if (strncmp(model, "PowerBook", strlen("PowerBook")) != 0 &&
strncmp(model, "iBook", strlen("iBook")) != 0 &&
strcmp(model, "PowerMac7,2") != 0 &&
--
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