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 <ju...@diku.dk> --- arch/powerpc/sysdev/qe_lib/qe.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/powerpc/sysdev/qe_lib/qe.c b/arch/powerpc/sysdev/qe_lib/qe.c index 3da8014..90020de 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; } } _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
