netdev - Re: [PATCH] net: dwmac-rk: MAC clock should be truned off

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Message-ID: <d5325aba-507e-47b6-83fb-b9156c1f351e@lunn.ch>
Date: Fri, 23 May 2025 18:20:13 +0200
From: Andrew Lunn <andrew@...n.ch>
To: 李哲 <sensor1010@....com>
Cc: andrew+netdev@...n.ch, davem@...emloft.net, edumazet@...gle.com,
	kuba@...nel.org, pabeni@...hat.com, mcoquelin.stm32@...il.com,
	alexandre.torgue@...s.st.com, jonas@...boo.se,
	rmk+kernel@...linux.org.uk, david.wu@...k-chips.com, wens@...e.org,
	u.kleine-koenig@...libre.com, an.petrous@....nxp.com,
	netdev@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net: dwmac-rk: MAC clock should be truned off

On Fri, May 23, 2025 at 08:15:21AM -0700, 李哲 wrote:
> if PHY power-on fails, clockassociated the MAC should
> be disabled during the MAC initialization process

The Subject: line has a typo.

> Signed-off-by: 李哲 <sensor1010@....com>
> ---
>  drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
> index 700858ff6f7c..036e45be5828 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
> @@ -1648,7 +1648,7 @@ static int gmac_clk_enable(struct rk_priv_data *bsp_priv, bool enable)
>  static int phy_power_on(struct rk_priv_data *bsp_priv, bool enable)
>  {
>  	struct regulator *ldo = bsp_priv->regulator;
> -	int ret;
> +	int ret = 0;
>  	struct device *dev = &bsp_priv->pdev->dev;
>  
>  	if (enable) {
> @@ -1661,7 +1661,7 @@ static int phy_power_on(struct rk_priv_data *bsp_priv, bool enable)
>  			dev_err(dev, "fail to disable phy-supply\n");
>  	}
>  
> -	return 0;
> +	return ret;

This does not make much sense to me. How do you get here with ret not
being 0?

    Andrew

---
pw-bot: cr