linux-kernel - Re: [PATCH] gpio: rockchip: fix OF node leak in probe()

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Message-ID: <CAMRc=MfzApzPVauqTm75PTGogRsW=cHH_zu_mCKnysvDTY8R7Q@mail.gmail.com>
Date: Mon, 2 Sep 2024 12:23:32 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc: Linus Walleij <linus.walleij@...aro.org>, Heiko Stuebner <heiko@...ech.de>, 
	Jianqun Xu <jay.xu@...k-chips.com>, linux-gpio@...r.kernel.org, 
	linux-arm-kernel@...ts.infradead.org, linux-rockchip@...ts.infradead.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] gpio: rockchip: fix OF node leak in probe()

On Mon, Aug 26, 2024 at 5:08 PM Krzysztof Kozlowski
<krzysztof.kozlowski@...aro.org> wrote:
>
> Driver code is leaking OF node reference from of_get_parent() in
> probe().
>
> Fixes: 936ee2675eee ("gpio/rockchip: add driver for rockchip gpio")
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> ---
>  drivers/gpio/gpio-rockchip.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpio/gpio-rockchip.c b/drivers/gpio/gpio-rockchip.c
> index 0bd339813110..365ab947983c 100644
> --- a/drivers/gpio/gpio-rockchip.c
> +++ b/drivers/gpio/gpio-rockchip.c
> @@ -713,6 +713,7 @@ static int rockchip_gpio_probe(struct platform_device *pdev)
>                 return -ENODEV;
>
>         pctldev = of_pinctrl_get(pctlnp);
> +       of_node_put(pctlnp);
>         if (!pctldev)
>                 return -EPROBE_DEFER;
>
> --
> 2.43.0
>

How about using __free(device_node)?

Bart