From: Julia Lawall <julia@xxxxxxx> of_node_put is needed before discarding a value received from of_find_node_by_type, eg in error handling code. The semantic patch that makes the change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ struct device_node *n; struct device_node *n1; struct device_node *n2; statement S; identifier f1,f2; expression E1,E2; constant C; @@ n = of_find_node_by_type(...) ... if (!n) S ... when != of_node_put(n) when != n1 = f1(n,...) when != E1 = n when any when strict ( + of_node_put(n); return -C; | of_node_put(n); | n2 = f2(n,...) | E2 = n | return ...; ) // </smpl> Signed-off-by: Julia Lawall <julia@xxxxxxx> --- diff -u -p a/drivers/video/fsl-diu-fb.c b/drivers/video/fsl-diu-fb.c --- a/drivers/video/fsl-diu-fb.c +++ b/drivers/video/fsl-diu-fb.c @@ -1664,8 +1664,10 @@ static int __init fsl_diu_init(void) } prop = of_get_property(np, "d-cache-size", NULL); - if (prop == NULL) + if (prop == NULL) { + of_node_put(np); return -ENODEV; + } /* Freescale PLRU requires 13/8 times the cache size to do a proper displacement flush @@ -1674,8 +1676,10 @@ static int __init fsl_diu_init(void) coherence_data_size /= 8; prop = of_get_property(np, "d-cache-line-size", NULL); - if (prop == NULL) + if (prop == NULL) { + of_node_put(np); return -ENODEV; + } d_cache_line_size = *prop; of_node_put(np); -- To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
