linux-kernel - Re: [PATCH v5 net-next 07/13] net: enetc: remove ERR050089 workaround for i.MX95

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Message-ID: <20241024175128.7pdwpqr4mlok43cb@skbuf>
Date: Thu, 24 Oct 2024 20:51:28 +0300
From: Vladimir Oltean <vladimir.oltean@....com>
To: Wei Fang <wei.fang@....com>
Cc: davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
	pabeni@...hat.com, robh@...nel.org, krzk+dt@...nel.org,
	conor+dt@...nel.org, claudiu.manoil@....com, xiaoning.wang@....com,
	Frank.Li@....com, christophe.leroy@...roup.eu,
	linux@...linux.org.uk, bhelgaas@...gle.com, horms@...nel.org,
	imx@...ts.linux.dev, netdev@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org, alexander.stein@...tq-group.com
Subject: Re: [PATCH v5 net-next 07/13] net: enetc: remove ERR050089
 workaround for i.MX95

On Thu, Oct 24, 2024 at 02:53:22PM +0800, Wei Fang wrote:
> @@ -62,6 +65,12 @@ static int enetc_pci_mdio_probe(struct pci_dev *pdev,
>  		goto err_pci_mem_reg;
>  	}
>  
> +	if (pdev->vendor == PCI_VENDOR_ID_FREESCALE &&
> +	    pdev->device == ENETC_MDIO_DEV_ID) {
> +		static_branch_inc(&enetc_has_err050089);
> +		dev_info(&pdev->dev, "Enabled ERR050089 workaround\n");
> +	}
> +
>  	err = of_mdiobus_register(bus, dev->of_node);
>  	if (err)
>  		goto err_mdiobus_reg;

If of_mdiobus_register() fails, we should disable the static key.

Perhaps the snippets to enable and disable the static key should be in
helper functions to more easily insert the error teardown logic.