[PATCH 5.15 063/244] pinctrl: nomadik: Fix refcount leak in nmk_pinctrl_dt_subnode_to_map

Greg Kroah-Hartman
2022-08-23T09:49:40Z

From: Miaoqian Lin <linmq006@gmail.com>

commit 4b32e054335ea0ce50967f63a7bfd4db058b14b9 upstream.

of_parse_phandle() returns a node pointer with refcount
incremented, we should use of_node_put() on it when not need anymore.
Add missing of_node_put() to avoid refcount leak."

Fixes: c2f6d059abfc ("pinctrl: nomadik: refactor DT parser to take two paths")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Link: https://lore.kernel.org/r/20220607111602.57355-1-linmq006@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/pinctrl/nomadik/pinctrl-nomadik.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/pinctrl/nomadik/pinctrl-nomadik.c
+++ b/drivers/pinctrl/nomadik/pinctrl-nomadik.c
@@ -1421,8 +1421,10 @@ static int nmk_pinctrl_dt_subnode_to_map

has_config = nmk_pinctrl_dt_get_config(np, &configs);
np_config = of_parse_phandle(np, "ste,config", 0);
- if (np_config)
+ if (np_config) {
has_config |= nmk_pinctrl_dt_get_config(np_config, &configs);
+ of_node_put(np_config);
+ }
if (has_config) {
const char *gpio_name;
const char *pin;