linux-kernel - Re: [PATCH net-next v6 3/6] net: bcmasp: Add support for ASP2.0 Ethernet controller

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Message-ID: <20230602235254.61798d80@kernel.org>
Date:   Fri, 2 Jun 2023 23:52:54 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Justin Chen <justin.chen@...adcom.com>
Cc:     netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        bcm-kernel-feedback-list@...adcom.com,
        florian.fainelli@...adcom.com, davem@...emloft.net,
        edumazet@...gle.com, pabeni@...hat.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        opendmb@...il.com, andrew@...n.ch, hkallweit1@...il.com,
        linux@...linux.org.uk, richardcochran@...il.com,
        sumit.semwal@...aro.org, christian.koenig@....com,
        simon.horman@...igine.com
Subject: Re: [PATCH net-next v6 3/6] net: bcmasp: Add support for ASP2.0
 Ethernet controller

On Thu,  1 Jun 2023 15:12:28 -0700 Justin Chen wrote:
> +	ports_node = of_find_node_by_name(dev->of_node, "ethernet-ports");
> +	if (!ports_node) {
> +		dev_warn(dev, "No ports found\n");
> +		return 0;
> +	}
> +
> +	for_each_available_child_of_node(ports_node, intf_node) {
> +		of_property_read_u32(intf_node, "reg", &port);
> +		if (!bcmasp_is_port_valid(priv, port)) {
> +			dev_warn(dev, "%pOF: %d is an invalid port\n",
> +				 intf_node, port);
> +			continue;
> +		}
> +
> +		priv->intf_count++;
> +	}

I think that you're leaking ports_node,

/**
 * of_find_node_by_name - Find a node by its "name" property
 * @from:	The node to start searching from or NULL; the node
 *		you pass will not be searched, only the next one
 *		will. Typically, you pass what the previous call
 *		returned. of_node_put() will be called on @from.
 * @name:	The name string to match against
 *
 * Return: A node pointer with refcount incremented, use
 * of_node_put() on it when done.
 */

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