| Message ID | 1450715988-4770-6-git-send-email-Julia.Lawall@lip6.fr (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Mon, Dec 21, 2015 at 5:39 PM, Julia Lawall <Julia.Lawall@lip6.fr> wrote: > for_each_child_of_node performs an of_node_get on each iteration, so a > return from the loop requires an of_node_put. > > A simplified version of the semantic patch that fixes this problem is as > follows (http://coccinelle.lip6.fr): Patch applied. Yours, Linus Walleij
diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c index 45f3562..ee2287b 100644 --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c @@ -598,6 +598,7 @@ static int mtk_pctrl_dt_node_to_map(struct pinctrl_dev *pctldev, &reserved_maps, num_maps); if (ret < 0) { pinctrl_utils_dt_free_map(pctldev, *map, *num_maps); + of_node_put(np); return ret; } }
for_each_child_of_node performs an of_node_get on each iteration, so a return from the loop requires an of_node_put. A simplified version of the semantic patch that fixes this problem is as follows (http://coccinelle.lip6.fr): // <smpl> @@ local idexpression n; expression e,e1; @@ for_each_child_of_node(e1,n) { ... ( of_node_put(n); | e = n | return n; | + of_node_put(n); ? return ...; ) ... } // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> --- drivers/pinctrl/mediatek/pinctrl-mtk-common.c | 1 + 1 file changed, 1 insertion(+)