netdev - Re: [PATCH net-next v2 02/23] net: stmmac: dwmac-dwc-qos-eth: use devm_stmmac_probe_config

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Date: Mon, 18 Sep 2023 22:11:26 +0300
From: Serge Semin <fancer.lancer@...il.com>
To: Jisheng Zhang <jszhang@...nel.org>
Cc: Giuseppe Cavallaro <peppe.cavallaro@...com>, 
	Alexandre Torgue <alexandre.torgue@...s.st.com>, Jose Abreu <joabreu@...opsys.com>, 
	"David S . Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
	Maxime Coquelin <mcoquelin.stm32@...il.com>, Shawn Guo <shawnguo@...nel.org>, 
	Sascha Hauer <s.hauer@...gutronix.de>, Pengutronix Kernel Team <kernel@...gutronix.de>, 
	Fabio Estevam <festevam@...il.com>, NXP Linux Team <linux-imx@....com>, 
	Vladimir Zapolskiy <vz@...ia.com>, Neil Armstrong <neil.armstrong@...aro.org>, 
	Kevin Hilman <khilman@...libre.com>, Jerome Brunet <jbrunet@...libre.com>, 
	Martin Blumenstingl <martin.blumenstingl@...glemail.com>, Emil Renner Berthing <kernel@...il.dk>, 
	Samin Guo <samin.guo@...rfivetech.com>, Chen-Yu Tsai <wens@...e.org>, 
	Jernej Skrabec <jernej.skrabec@...il.com>, Samuel Holland <samuel@...lland.org>, 
	Thierry Reding <thierry.reding@...il.com>, Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@...hiba.co.jp>, 
	Russell King <linux@...linux.org.uk>, Matthias Brugger <matthias.bgg@...il.com>, 
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, netdev@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com, 
	linux-arm-kernel@...ts.infradead.org, linux-amlogic@...ts.infradead.org, linux-sunxi@...ts.linux.dev, 
	linux-tegra@...r.kernel.org, linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH net-next v2 02/23] net: stmmac: dwmac-dwc-qos-eth: use
 devm_stmmac_probe_config_dt()

Hi Jisheng

On Sat, Sep 16, 2023 at 03:58:08PM +0800, Jisheng Zhang wrote:
> Simplify the driver's probe() function by using the devres
> variant of stmmac_probe_config_dt().
> 
> Signed-off-by: Jisheng Zhang <jszhang@...nel.org>
> ---
>  .../ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c   | 15 +++------------
>  1 file changed, 3 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c
> index 61ebf36da13d..ec924c6c76c6 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c
> @@ -435,15 +435,14 @@ static int dwc_eth_dwmac_probe(struct platform_device *pdev)
>  	if (IS_ERR(stmmac_res.addr))
>  		return PTR_ERR(stmmac_res.addr);
>  
> -	plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
> +	plat_dat = devm_stmmac_probe_config_dt(pdev, stmmac_res.mac);
>  	if (IS_ERR(plat_dat))
>  		return PTR_ERR(plat_dat);
>  
>  	ret = data->probe(pdev, plat_dat, &stmmac_res);
>  	if (ret < 0) {

>  		dev_err_probe(&pdev->dev, ret, "failed to probe subdriver\n");
> -
> -		goto remove_config;
> +		return ret;

just "return dev_err_probe()".

-Serge(y)

>  	}
>  
>  	ret = dwc_eth_dwmac_config_dt(pdev, plat_dat);
> @@ -458,25 +457,17 @@ static int dwc_eth_dwmac_probe(struct platform_device *pdev)
>  
>  remove:
>  	data->remove(pdev);
> -remove_config:
> -	stmmac_remove_config_dt(pdev, plat_dat);
>  
>  	return ret;
>  }
>  
>  static void dwc_eth_dwmac_remove(struct platform_device *pdev)
>  {
> -	struct net_device *ndev = platform_get_drvdata(pdev);
> -	struct stmmac_priv *priv = netdev_priv(ndev);
> -	const struct dwc_eth_dwmac_data *data;
> -
> -	data = device_get_match_data(&pdev->dev);
> +	const struct dwc_eth_dwmac_data *data = device_get_match_data(&pdev->dev);
>  
>  	stmmac_dvr_remove(&pdev->dev);
>  
>  	data->remove(pdev);
> -
> -	stmmac_remove_config_dt(pdev, priv->plat);
>  }
>  
>  static const struct of_device_id dwc_eth_dwmac_match[] = {
> -- 
> 2.40.1
> 
>