[PATCH 6.18 072/309] pinctrl: renesas: rzt2h: Fix device node leak in rzt2h_gpio_register()

Greg Kroah-Hartman
2026-03-31T16:59:43Z

From: Felix Gu <ustc.gu@gmail.com>

[ Upstream commit e825c79ef914bd55cf7c2476ddcfb2738eb689c3 ]

When calling of_parse_phandle_with_fixed_args(), the caller is
responsible for calling of_node_put() to release the device node
reference.

In rzt2h_gpio_register(), the driver fails to call of_node_put() to
release the reference in of_args.np, which causes a memory leak.

Add the missing of_node_put() call to fix the leak.

Fixes: 34d4d093077a ("pinctrl: renesas: Add support for RZ/T2H")
Signed-off-by: Felix Gu <ustc.gu@gmail.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20260127-rzt2h-v1-1-86472e7421b8@gmail.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/pinctrl/renesas/pinctrl-rzt2h.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/pinctrl/renesas/pinctrl-rzt2h.c b/drivers/pinctrl/renesas/pinctrl-rzt2h.c
index 3161b2469c362..595ad5c83aa00 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzt2h.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzt2h.c
@@ -648,6 +648,7 @@ static int rzt2h_gpio_register(struct rzt2h_pinctrl *pctrl)
if (ret)
return dev_err_probe(dev, ret, "Unable to parse gpio-ranges\n");

+ of_node_put(of_args.np);
if (of_args.args[0] != 0 || of_args.args[1] != 0 ||
of_args.args[2] != pctrl->data->n_port_pins)
return dev_err_probe(dev, -EINVAL,
--
2.51.0