[PATCH 5.16 0696/1017] pinctrl: mediatek: Fix missing of_node_put() in mtk_pctrl_init

Greg Kroah-Hartman
2022-04-05T13:24:19Z

From: Miaoqian Lin <linmq006@gmail.com>

[ Upstream commit dab4df9ca919f59e5b9dd84385eaf34d4f20dbb0 ]

The device_node pointer is returned by of_parse_phandle() with refcount
incremented. We should use of_node_put() on it when done.

Fixes: a6df410d420a ("pinctrl: mediatek: Add Pinctrl/GPIO driver for mt8135.")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20220308071155.21114-1-linmq006@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/pinctrl/mediatek/pinctrl-mtk-common.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
index 5f7c421ab6e7..334cb85855a9 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
@@ -1038,6 +1038,7 @@ int mtk_pctrl_init(struct platform_device *pdev,
node = of_parse_phandle(np, "mediatek,pctl-regmap", 0);
if (node) {
pctl->regmap1 = syscon_node_to_regmap(node);
+ of_node_put(node);
if (IS_ERR(pctl->regmap1))
return PTR_ERR(pctl->regmap1);
} else if (regmap) {
@@ -1051,6 +1052,7 @@ int mtk_pctrl_init(struct platform_device *pdev,
node = of_parse_phandle(np, "mediatek,pctl-regmap", 1);
if (node) {
pctl->regmap2 = syscon_node_to_regmap(node);
+ of_node_put(node);
if (IS_ERR(pctl->regmap2))
return PTR_ERR(pctl->regmap2);
}
--
2.34.1