linux-kernel - Re: [PATCH] net: dsa: Removed unneeded of_node_put in felix_parse_ports

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Date:   Mon, 10 Jul 2023 13:58:35 +0300
From:   Vladimir Oltean <vladimir.oltean@....com>
To:     Lu Hongfei <luhongfei@...o.com>
Cc:     Claudiu Manoil <claudiu.manoil@....com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        UNGLinuxDriver@...rochip.com, Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, opensource.kernel@...o.com
Subject: Re: [PATCH] net: dsa: Removed unneeded of_node_put in
 felix_parse_ports_node

On Mon, Jul 10, 2023 at 11:18:59AM +0800, Lu Hongfei wrote:
> Remove unnecessary of_node_put from the continue path to prevent
> child node from being released twice, which could avoid resource
> leak or other unexpected issues.
> 
> Signed-off-by: Lu Hongfei <luhongfei@...o.com>
> ---
>  drivers/net/dsa/ocelot/felix.c | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/drivers/net/dsa/ocelot/felix.c b/drivers/net/dsa/ocelot/felix.c
> index dee43caee19e..8da46d284e35 100644
> --- a/drivers/net/dsa/ocelot/felix.c
> +++ b/drivers/net/dsa/ocelot/felix.c
> @@ -1286,7 +1286,6 @@ static int felix_parse_ports_node(struct felix *felix,
>  		if (err < 0) {
>  			dev_info(dev, "Unsupported PHY mode %s on port %d\n",
>  				 phy_modes(phy_mode), port);
> -			of_node_put(child);
>  
>  			/* Leave port_phy_modes[port] = 0, which is also
>  			 * PHY_INTERFACE_MODE_NA. This will perform a
> -- 
> 2.39.0
>

Fixes: de879a016a94 ("net: dsa: felix: add functionality when not all ports are supported")
Reviewed-by: Vladimir Oltean <vladimir.oltean@....com>