linux-kernel - [PATCH] stmmac: dwmac-loongson:add the return value

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Message-Id: <20210830052913.12793-1-zhaoxiao@uniontech.com>
Date:   Mon, 30 Aug 2021 13:29:13 +0800
From:   zhaoxiao <zhaoxiao@...ontech.com>
To:     davem@...emloft.net, kuba@...nel.org, mcoquelin.stm32@...il.com
Cc:     peppe.cavallaro@...com, alexandre.torgue@...s.st.com,
        joabreu@...opsys.com, netdev@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        zhaoxiao <zhaoxiao@...ontech.com>
Subject: [PATCH] stmmac: dwmac-loongson:add the return value

Add the return value when phy_mode < 0.

Signed-off-by: zhaoxiao <zhaoxiao@...ontech.com>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
index 4c9a37dd0d3f..ecf759ee1c9f 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
@@ -109,8 +109,10 @@ static int loongson_dwmac_probe(struct pci_dev *pdev, const struct pci_device_id
 		plat->bus_id = pci_dev_id(pdev);
 
 	phy_mode = device_get_phy_mode(&pdev->dev);
-	if (phy_mode < 0)
+	if (phy_mode < 0) {
 		dev_err(&pdev->dev, "phy_mode not found\n");
+		return phy_mode;
+	}
 
 	plat->phy_interface = phy_mode;
 	plat->interface = PHY_INTERFACE_MODE_GMII;
-- 
2.20.1