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| author | Julia Lawall <julia@diku.dk> | 2010-08-28 23:52:40 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-09-02 14:07:33 +1000 |
| commit | 1f7aac6eb585f92756603341cb1d770c797c4867 (patch) | |
| tree | f8e99e8c61f11e9a6e06ec821b0787671efb8ec9 | |
| parent | 8fb07c0444c37caa39a8df7c70a694c6211f2f57 (diff) | |
| download | linux-3.10-1f7aac6eb585f92756603341cb1d770c797c4867.tar.gz linux-3.10-1f7aac6eb585f92756603341cb1d770c797c4867.tar.bz2 linux-3.10-1f7aac6eb585f92756603341cb1d770c797c4867.zip | |
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/)
// <smpl>
@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);
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| -rw-r--r-- | drivers/macintosh/via-pmu-led.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/macintosh/via-pmu-led.c b/drivers/macintosh/via-pmu-led.c index d242976bcfe..19c371809d7 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 && |