Re: [PATCH 2/3] net: stmmac: qcom-ethqos: Enable RX programmable swap on qcs615

[Krzysztof Kozlowski]

On 25/12/2024 11:04, Yijie Yang wrote:

>  static int qcom_ethqos_probe(struct platform_device *pdev)
>  {
> -	struct device_node *np = pdev->dev.of_node;
> +	struct device_node *np = pdev->dev.of_node, *root;
>  	const struct ethqos_emac_driver_data *data;
>  	struct plat_stmmacenet_data *plat_dat;
>  	struct stmmac_resources stmmac_res;
> @@ -810,6 +805,15 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
>  	ret = of_get_phy_mode(np, &ethqos->phy_mode);
>  	if (ret)
>  		return dev_err_probe(dev, ret, "Failed to get phy mode\n");
> +
> +	root = of_find_node_by_path("/");
> +	if (root && of_device_is_compatible(root, "qcom,sa8540p-ride"))


Nope, your drivers are not supposed to poke root compatibles. Drop and
fix your driver to behave correctly for all existing devices.

> +		ethqos->needs_rx_prog_swap = true;
> +	else
> +		ethqos->needs_rx_prog_swap =
Best regards,
Krzysztof