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authorJulia Lawall <julia@diku.dk>2010-08-29 11:52:44 +0200
committerKumar Gala <galak@kernel.crashing.org>2010-08-31 16:41:03 -0500
commit5aac4d73dc234fe7be91679b547af2436d7f8d1e (patch)
treec8602d3b4ea3326957beb884e095cc51c1a3596f /arch
parentfa9fc821f8892590211a9aa9e855eb83152b9870 (diff)
downloadlinux-linaro-android-5aac4d73dc234fe7be91679b547af2436d7f8d1e.tar.gz
arch/powerpc/sysdev/qe_lib/qe.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_compatible_node. 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> Acked-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/sysdev/qe_lib/qe.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/sysdev/qe_lib/qe.c b/arch/powerpc/sysdev/qe_lib/qe.c
index 3da8014931c..90020de4dcf 100644
--- a/arch/powerpc/sysdev/qe_lib/qe.c
+++ b/arch/powerpc/sysdev/qe_lib/qe.c
@@ -640,6 +640,7 @@ unsigned int qe_get_num_of_snums(void)
if ((num_of_snums < 28) || (num_of_snums > QE_NUM_OF_SNUM)) {
/* No QE ever has fewer than 28 SNUMs */
pr_err("QE: number of snum is invalid\n");
+ of_node_put(qe);
return -EINVAL;
}
}