Re: [PATCH] pinctrl: mediatek: Fix missing of_node_put() in mtk_pctrl_init

[AngeloGioacchino Del Regno]

Il 08/03/22 08:11, Miaoqian Lin ha scritto:
> 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@xxxxxxxxx>

Thanks!

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>

> ---
>   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);
>   	}