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Subject: Re: [PATCH net] net: stmmac: Fixed link does not need MDIO Bus
To:     Jose Abreu <Jose.Abreu@synopsys.com>, netdev@vger.kernel.org
Cc:     Joao Pinto <Joao.Pinto@synopsys.com>,
        Alexandre Torgue <alexandre.torgue@st.com>,
        "kernelci . org bot" <bot@kernelci.org>,
        Sriram Dash <sriram.dash@samsung.com>,
        linux-kernel@vger.kernel.org,
        linux-stm32@st-md-mailman.stormreply.com,
        Florian Fainelli <f.fainelli@gmail.com>,
        Maxime Coquelin <mcoquelin.stm32@gmail.com>,
        Giuseppe Cavallaro <peppe.cavallaro@st.com>,
        "David S. Miller" <davem@davemloft.net>,
        linux-arm-kernel@lists.infradead.org,
        Heiko Stuebner <heiko@sntech.de>
References: <5764e60da6d3af7e76c30f63b07f1a12b4787918.1578400471.git.Jose.Abreu@synopsys.com>
From:   Neil Armstrong <narmstrong@baylibre.com>
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Organization: Baylibre
Message-ID: <437a073e-1610-ffa2-891c-692bea3541fd@baylibre.com>
Date:   Tue, 7 Jan 2020 15:23:06 +0100
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In-Reply-To: <5764e60da6d3af7e76c30f63b07f1a12b4787918.1578400471.git.Jose.Abreu@synopsys.com>
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On 07/01/2020 13:35, Jose Abreu wrote:
> When using fixed link we don't need the MDIO bus support.
> 
> Reported-by: Heiko Stuebner <heiko@sntech.de>
> Reported-by: kernelci.org bot <bot@kernelci.org>
> Fixes: d3e014ec7d5e ("net: stmmac: platform: Fix MDIO init for platforms without PHY")
> Signed-off-by: Jose Abreu <Jose.Abreu@synopsys.com>
> 
> ---
> Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
> Cc: Alexandre Torgue <alexandre.torgue@st.com>
> Cc: Jose Abreu <joabreu@synopsys.com>
> Cc: "David S. Miller" <davem@davemloft.net>
> Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
> Cc: netdev@vger.kernel.org
> Cc: linux-stm32@st-md-mailman.stormreply.com
> Cc: linux-arm-kernel@lists.infradead.org
> Cc: linux-kernel@vger.kernel.org
> Cc: Heiko Stuebner <heiko@sntech.de>
> Cc: kernelci.org bot <bot@kernelci.org>
> Cc: Florian Fainelli <f.fainelli@gmail.com>
> Cc: Sriram Dash <sriram.dash@samsung.com>
> ---
>  drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
> index cc8d7e7bf9ac..4775f49d7f3b 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
> @@ -320,7 +320,7 @@ static int stmmac_mtl_setup(struct platform_device *pdev,
>  static int stmmac_dt_phy(struct plat_stmmacenet_data *plat,
>  			 struct device_node *np, struct device *dev)
>  {
> -	bool mdio = false;
> +	bool mdio = !of_phy_is_fixed_link(np);
>  	static const struct of_device_id need_mdio_ids[] = {
>  		{ .compatible = "snps,dwc-qos-ethernet-4.10" },
>  		{},
> 

Acked-by: Neil Armstrong <narmstrong@baylibre.com>