netdev - [PATCH net-next 1/4] net: stmmac: anarion: clean up anarion_config

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Message-Id: <E1u3bfF-000Eli-C5@rmk-PC.armlinux.org.uk>
Date: Sat, 12 Apr 2025 15:16:57 +0100
From: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
To: Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>
Cc: Alexandre Torgue <alexandre.torgue@...s.st.com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	linux-arm-kernel@...ts.infradead.org,
	linux-stm32@...md-mailman.stormreply.com,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	netdev@...r.kernel.org,
	Paolo Abeni <pabeni@...hat.com>
Subject: [PATCH net-next 1/4] net: stmmac: anarion: clean up
 anarion_config_dt() error handling

When enabled, print a user friendly description of the error when
failing to ioremap() the control resource, and use ERR_CAST() when
propagating the error. This allows us to get rid of the "err" local
variable in anarion_config_dt().

Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac-anarion.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-anarion.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-anarion.c
index 37fe7c288878..232aae752690 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-anarion.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-anarion.c
@@ -65,13 +65,12 @@ anarion_config_dt(struct platform_device *pdev,
 {
 	struct anarion_gmac *gmac;
 	void __iomem *ctl_block;
-	int err;
 
 	ctl_block = devm_platform_ioremap_resource(pdev, 1);
 	if (IS_ERR(ctl_block)) {
-		err = PTR_ERR(ctl_block);
-		dev_err(&pdev->dev, "Cannot get reset region (%d)!\n", err);
-		return ERR_PTR(err);
+		dev_err(&pdev->dev, "Cannot get reset region (%pe)!\n",
+			ctl_block);
+		return ERR_CAST(ctl_block);
 	}
 
 	gmac = devm_kzalloc(&pdev->dev, sizeof(*gmac), GFP_KERNEL);
-- 
2.30.2