linux-kernel - Re: [PATCH net] net: stmmac: Fixed link does not need MDIO Bus

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Date:   Tue, 7 Jan 2020 15:23:06 +0100
From:   Neil Armstrong <narmstrong@...libre.com>
To:     Jose Abreu <Jose.Abreu@...opsys.com>, netdev@...r.kernel.org
Cc:     Joao Pinto <Joao.Pinto@...opsys.com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        "kernelci . org bot" <bot@...nelci.org>,
        Sriram Dash <sriram.dash@...sung.com>,
        linux-kernel@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        Florian Fainelli <f.fainelli@...il.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        "David S. Miller" <davem@...emloft.net>,
        linux-arm-kernel@...ts.infradead.org,
        Heiko Stuebner <heiko@...ech.de>
Subject: Re: [PATCH net] net: stmmac: Fixed link does not need MDIO Bus

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@...ech.de>
> Reported-by: kernelci.org bot <bot@...nelci.org>
> Fixes: d3e014ec7d5e ("net: stmmac: platform: Fix MDIO init for platforms without PHY")
> Signed-off-by: Jose Abreu <Jose.Abreu@...opsys.com>
> 
> ---
> Cc: Giuseppe Cavallaro <peppe.cavallaro@...com>
> Cc: Alexandre Torgue <alexandre.torgue@...com>
> Cc: Jose Abreu <joabreu@...opsys.com>
> Cc: "David S. Miller" <davem@...emloft.net>
> Cc: Maxime Coquelin <mcoquelin.stm32@...il.com>
> Cc: netdev@...r.kernel.org
> Cc: linux-stm32@...md-mailman.stormreply.com
> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: linux-kernel@...r.kernel.org
> Cc: Heiko Stuebner <heiko@...ech.de>
> Cc: kernelci.org bot <bot@...nelci.org>
> Cc: Florian Fainelli <f.fainelli@...il.com>
> Cc: Sriram Dash <sriram.dash@...sung.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@...libre.com>