Re: [PATCH net-next v7 14/15] net: stmmac: dwmac-s32: add basic NXP S32G/S32R glue driver

[Andrew Lunn]

> +static int s32_gmac_init(struct platform_device *pdev, void *priv)
> +{
> +	struct s32_priv_data *gmac = priv;
> +	int ret;
> +
> +	ret = clk_set_rate(gmac->tx_clk, GMAC_TX_RATE_125M);
> +	if (!ret)
> +		ret = clk_prepare_enable(gmac->tx_clk);
> +
> +	if (ret) {
> +		dev_err(&pdev->dev, "Can't set tx clock\n");
> +		return ret;
> +	}

The ordering is a bit odd here. Normally you would test each operation
individually for errors. So:

	ret = clk_set_rate(gmac->tx_clk, GMAC_TX_RATE_125M);
	if (ret) {
		dev_err(&pdev->dev, "Can't set tx clock\n");
		return ret;
	}
	ret = clk_prepare_enable(gmac->tx_clk);
	if (ret) {
		dev_err(&pdev->dev, "Can't enable tx clock\n");
		return ret;
	}


> +
> +	ret = clk_prepare_enable(gmac->rx_clk);
> +	if (ret) {
> +		clk_disable_unprepare(gmac->tx_clk);
> +		dev_err(&pdev->dev, "Can't set rx clock\n");
> +		return ret;
> +	}

Is there no need to set the TX clock rate?

	Andrew