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authorJulia Lawall <julia@diku.dk>2010-08-28 23:52:40 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2010-09-02 14:07:33 +1000
commit1f7aac6eb585f92756603341cb1d770c797c4867 (patch)
treef8e99e8c61f11e9a6e06ec821b0787671efb8ec9 /drivers/macintosh
parent8fb07c0444c37caa39a8df7c70a694c6211f2f57 (diff)
downloadlinux-1f7aac6eb585f92756603341cb1d770c797c4867.tar.bz2
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>
Diffstat (limited to 'drivers/macintosh')
-rw-r--r--drivers/macintosh/via-pmu-led.c4
1 files changed, 3 insertions, 1 deletions
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 &&