linux-kernel - Re: [PATCH 1/2] soc: imx: soc-imx8: Avoid unnecessary of_node

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Date:   Thu, 23 May 2019 20:40:45 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Anson Huang <anson.huang@....com>
Cc:     "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "festevam@...il.com" <festevam@...il.com>,
        Leonard Crestez <leonard.crestez@....com>,
        Abel Vesa <abel.vesa@....com>,
        "viresh.kumar@...aro.org" <viresh.kumar@...aro.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        dl-linux-imx <linux-imx@....com>
Subject: Re: [PATCH 1/2] soc: imx: soc-imx8: Avoid unnecessary of_node_put()
 in error handling

On Tue, May 21, 2019 at 09:18:43AM +0000, Anson Huang wrote:
> of_node_put() is called after of_match_node() successfully called,
> then in the following error handling, of_node_put() is called again
> which is unnecessary, this patch adjusts the location of of_node_put()
> to avoid such scenario.
> 
> Signed-off-by: Anson Huang <Anson.Huang@....com>

Again, there are '=20' in the patch content and I cannot apply it.

Shawn

> ---
>  drivers/soc/imx/soc-imx8.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/soc/imx/soc-imx8.c b/drivers/soc/imx/soc-imx8.c
> index b1bd8e2..944add2 100644
> --- a/drivers/soc/imx/soc-imx8.c
> +++ b/drivers/soc/imx/soc-imx8.c
> @@ -86,8 +86,6 @@ static int __init imx8_soc_init(void)
>  	if (!id)
>  		goto free_soc;
>  
> -	of_node_put(root);
> -
>  	data = id->data;
>  	if (data) {
>  		soc_dev_attr->soc_id = data->name;
> @@ -106,6 +104,8 @@ static int __init imx8_soc_init(void)
>  	if (IS_ENABLED(CONFIG_ARM_IMX_CPUFREQ_DT))
>  		platform_device_register_simple("imx-cpufreq-dt", -1, NULL, 0);
>  
> +	of_node_put(root);
> +
>  	return 0;
>  
>  free_rev:
> -- 
> 2.7.4
>