linux-kernel - Re: [PATCH] thermal: imx: Add missing of_node

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Message-ID: <8325cde9-02f3-b913-b020-4c98d19936f4@linaro.org>
Date:   Thu, 26 Mar 2020 15:06:37 +0100
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     Anson Huang <Anson.Huang@....com>, rui.zhang@...el.com,
        amit.kucheria@...durent.com, shawnguo@...nel.org,
        s.hauer@...gutronix.de, kernel@...gutronix.de, festevam@...il.com,
        linux-pm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Cc:     Linux-imx@....com
Subject: Re: [PATCH] thermal: imx: Add missing of_node_put()

On 26/03/2020 06:27, Anson Huang wrote:
> After finishing using cpu node got from of_get_cpu_node(),
> of_node_put() needs to be called.
>
> Signed-off-by: Anson Huang <Anson.Huang@....com> ---
> drivers/thermal/imx_thermal.c | 10 +++++++--- 1 file changed, 7
> insertions(+), 3 deletions(-)
>
> diff --git a/drivers/thermal/imx_thermal.c
> b/drivers/thermal/imx_thermal.c index e761c9b..f7b970d 100644 ---
> a/drivers/thermal/imx_thermal.c +++
> b/drivers/thermal/imx_thermal.c @@ -649,7 +649,7 @@
> MODULE_DEVICE_TABLE(of, of_imx_thermal_match); static int
> imx_thermal_register_legacy_cooling(struct imx_thermal_data *data)
> { struct device_node *np; -	int ret; +	int ret = 0;
>
> data->policy = cpufreq_cpu_get(0); if (!data->policy) { @@ -664,11
> +664,15 @@ static int imx_thermal_register_legacy_cooling(struct
> imx_thermal_data *data) if (IS_ERR(data->cdev)) { ret =
> PTR_ERR(data->cdev); cpufreq_cpu_put(data->policy); -			return
> ret; +			goto put_node; } }
>
> -	return 0; +put_node: +	if (np) +		of_node_put(np);

of_node_put() is already checking if 'np' is NULL.

> + +	return ret; }
>
> static void imx_thermal_unregister_legacy_cooling(struct
> imx_thermal_data *data)
>


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