linux-kernel - Re: [net-next PATCH 2/2] net: ethernet: stmmac: reset force speed bit for ipq806x

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Date:   Mon, 13 Jun 2022 22:49:17 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Christian 'Ansuel' Marangi <ansuelsmth@...il.com>
Cc:     Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Jose Abreu <joabreu@...opsys.com>,
        "David S. Miller" <davem@...emloft.net>,
        Paolo Abeni <pabeni@...hat.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        netdev@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Mark Mentovai <mark@...ienet.com>
Subject: Re: [net-next PATCH 2/2] net: ethernet: stmmac: reset force speed
 bit for ipq806x

On Thu,  9 Jun 2022 02:28:31 +0200 Christian 'Ansuel' Marangi wrote:
> +	dn = of_get_child_by_name(pdev->dev.of_node, "fixed-link");
> +	ret = of_property_read_u32(dn, "speed", &link_speed);
> +	if (ret) {
> +		dev_err(dev, "found fixed-link node with no speed");
> +		return ret;

Doesn't this return potentially leak the reference on dn?
You move the of_node_put() right before the if (ret) {

> +	}
> +
> +	of_node_put(dn);