linux-kernel - [PATCH] mlxbf_gige: Add missing check for platform_get

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Message-Id: <20230531075451.47524-1-jiasheng@iscas.ac.cn>
Date:   Wed, 31 May 2023 15:54:51 +0800
From:   Jiasheng Jiang <jiasheng@...as.ac.cn>
To:     davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, davthompson@...dia.com, asmaa@...dia.com,
        mkl@...gutronix.de
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jiasheng Jiang <jiasheng@...as.ac.cn>
Subject: [PATCH] mlxbf_gige: Add missing check for platform_get_irq

Add the check for the return value of the platform_get_irq and
return error if it fails.

Fixes: f92e1869d74e ("Add Mellanox BlueField Gigabit Ethernet driver")
Signed-off-by: Jiasheng Jiang <jiasheng@...as.ac.cn>
---
 drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c b/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c
index 694de9513b9f..a38e1c68874f 100644
--- a/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c
+++ b/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c
@@ -427,6 +427,10 @@ static int mlxbf_gige_probe(struct platform_device *pdev)
 	priv->error_irq = platform_get_irq(pdev, MLXBF_GIGE_ERROR_INTR_IDX);
 	priv->rx_irq = platform_get_irq(pdev, MLXBF_GIGE_RECEIVE_PKT_INTR_IDX);
 	priv->llu_plu_irq = platform_get_irq(pdev, MLXBF_GIGE_LLU_PLU_INTR_IDX);
+	if (priv->error_irq < 0 || priv->rx_irq < 0 || priv->llu_plu_irq < 0) {
+		err = -ENODEV;
+		goto out;
+	}
 
 	phy_irq = acpi_dev_gpio_irq_get_by(ACPI_COMPANION(&pdev->dev), "phy-gpios", 0);
 	if (phy_irq < 0) {
-- 
2.25.1