Re: [PATCH net-next] net: dwmac-rk: No need to check the return value of the phy_power_on()

[Chaoyi Chen <chaoyi.chen@rock-chips.com>]

On 10/15/2025 12:08 PM, Lizhe wrote:

> 'phy_power_on' is a local scope one within the driver, since the return
> value of the phy_power_on() function is always 0, checking its return
> value is redundant.
>
> the function name 'phy_power_on()' conflicts with the existing
> phy_power_on() function in the PHY subsystem. a suitable alternative
> name would be rk_phy_power_set(), particularly since when the second
> argument is false, this function actually powers off the PHY
>
> Signed-off-by: Lizhe <sensor1010@163.com>
> ---
>   drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c | 17 ++++-------------
>   1 file changed, 4 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
> index 51ea0caf16c1..9d296bfab013 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
> @@ -1461,23 +1461,18 @@ static int gmac_clk_enable(struct rk_priv_data *bsp_priv, bool enable)
>   	return 0;
>   }
>   
> -static int phy_power_on(struct rk_priv_data *bsp_priv, bool enable)
> +static void rk_phy_power_on(struct rk_priv_data *bsp_priv, bool enable)
>   {
>   	struct regulator *ldo = bsp_priv->regulator;
>   	struct device *dev = bsp_priv->dev;
> -	int ret;
>   
>   	if (enable) {
> -		ret = regulator_enable(ldo);
> -		if (ret)
> +		if (regulator_enable(ldo))
>   			dev_err(dev, "fail to enable phy-supply\n");
>   	} else {
> -		ret = regulator_disable(ldo);
> -		if (ret)
> +		if (regulator_disable(ldo))
>   			dev_err(dev, "fail to disable phy-supply\n");
>   	}
> -
> -	return 0;
>   }
>   
>   static struct rk_priv_data *rk_gmac_setup(struct platform_device *pdev,
> @@ -1655,11 +1650,7 @@ static int rk_gmac_powerup(struct rk_priv_data *bsp_priv)
>   		dev_err(dev, "NO interface defined!\n");
>   	}
>   
> -	ret = phy_power_on(bsp_priv, true);
> -	if (ret) {
> -		gmac_clk_enable(bsp_priv, false);

Is gmac_clk_enable() also redundant?


> -		return ret;
> -	}
> +	rk_phy_power_on(bsp_priv, true);
>   
>   	pm_runtime_get_sync(dev);
>   

-- 
Best,
Chaoyi