linux-kernel - [PATCH] net: netsec: Make use of the helper function dev_err

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Date:   Thu, 16 Sep 2021 15:37:29 +0800
From:   Cai Huoqing <caihuoqing@...du.com>
To:     <caihuoqing@...du.com>
CC:     Jassi Brar <jaswinder.singh@...aro.org>,
        Ilias Apalodimas <ilias.apalodimas@...aro.org>,
        "David S. Miller" <davem@...emloft.net>,
        "Jakub Kicinski" <kuba@...nel.org>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] net: netsec: Make use of the helper function dev_err_probe()

When possible use dev_err_probe help to properly deal with the
PROBE_DEFER error, the benefit is that DEFER issue will be logged
in the devices_deferred debugfs file.
And using dev_err_probe() can reduce code size, and the error value
gets printed.

Signed-off-by: Cai Huoqing <caihuoqing@...du.com>
---
 drivers/net/ethernet/socionext/netsec.c | 21 +++++++++------------
 1 file changed, 9 insertions(+), 12 deletions(-)

diff --git a/drivers/net/ethernet/socionext/netsec.c b/drivers/net/ethernet/socionext/netsec.c
index 1f46af136aa8..f80a2aef9972 100644
--- a/drivers/net/ethernet/socionext/netsec.c
+++ b/drivers/net/ethernet/socionext/netsec.c
@@ -1860,10 +1860,9 @@ static int netsec_of_probe(struct platform_device *pdev,
 	*phy_addr = of_mdio_parse_addr(&pdev->dev, priv->phy_np);
 
 	priv->clk = devm_clk_get(&pdev->dev, NULL); /* get by 'phy_ref_clk' */
-	if (IS_ERR(priv->clk)) {
-		dev_err(&pdev->dev, "phy_ref_clk not found\n");
-		return PTR_ERR(priv->clk);
-	}
+	if (IS_ERR(priv->clk))
+		return dev_err_probe(&pdev->dev, PTR_ERR(priv->clk),
+				     "phy_ref_clk not found\n");
 	priv->freq = clk_get_rate(priv->clk);
 
 	return 0;
@@ -1886,19 +1885,17 @@ static int netsec_acpi_probe(struct platform_device *pdev,
 	priv->phy_interface = PHY_INTERFACE_MODE_NA;
 
 	ret = device_property_read_u32(&pdev->dev, "phy-channel", phy_addr);
-	if (ret) {
-		dev_err(&pdev->dev,
-			"missing required property 'phy-channel'\n");
-		return ret;
-	}
+	if (ret)
+		return dev_err_probe(&pdev->dev, ret,
+				     "missing required property 'phy-channel'\n");
 
 	ret = device_property_read_u32(&pdev->dev,
 				       "socionext,phy-clock-frequency",
 				       &priv->freq);
 	if (ret)
-		dev_err(&pdev->dev,
-			"missing required property 'socionext,phy-clock-frequency'\n");
-	return ret;
+		return dev_err_probe(&pdev->dev, ret,
+				     "missing required property 'socionext,phy-clock-frequency'\n");
+	return 0;
 }
 
 static void netsec_unregister_mdio(struct netsec_priv *priv)
-- 
2.25.1