linux-kernel - Re: [PATCH net-next] net: dwmac-rk: No need to check the return value of the phy_power

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Message-ID: <aO9iZiMBs3pUnb77@horms.kernel.org>
Date: Wed, 15 Oct 2025 09:59:18 +0100
From: Simon Horman <horms@...nel.org>
To: Lizhe <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, rmk+kernel@...linux.org.uk,
	jonas@...boo.se, chaoyi.chen@...k-chips.com,
	david.wu@...k-chips.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-next] net: dwmac-rk: No need to check the return
 value of the phy_power_on()

On Tue, Oct 14, 2025 at 09:08:47PM -0700, 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@....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)

Hi Lizhe,

This introduces a compilation error because phy_power_on()
is still used on line 1670.

Perhaps the hunk to update that line got lost somewhere.

-- 
pw-bot: changes-requested

...