linux-kernel - [PATCH 2/3] dmaengine: dw-edma: Add missing call to 'pci_free_irq

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Message-Id: <20210214132153.575350-3-zhengdejin5@gmail.com>
Date:   Sun, 14 Feb 2021 21:21:52 +0800
From:   Dejin Zheng <zhengdejin5@...il.com>
To:     gustavo.pimentel@...opsys.com, vkoul@...nel.org,
        wangzhou1@...ilicon.com, ftoth@...londelft.nl,
        andy.shevchenko@...il.com, qiuzhenfa@...ilicon.com,
        dmaengine@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, Dejin Zheng <zhengdejin5@...il.com>
Subject: [PATCH 2/3] dmaengine: dw-edma: Add missing call to 'pci_free_irq_vectors()' in probe function

Call to 'pci_free_irq_vectors()' is missing in the error handling path
of the probe function, So add it.

Fixes: 41aaff2a2ac01c5 ("dmaengine: Add Synopsys eDMA IP PCIe glue-logic")
Signed-off-by: Dejin Zheng <zhengdejin5@...il.com>
---
 drivers/dma/dw-edma/dw-edma-pcie.c | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/drivers/dma/dw-edma/dw-edma-pcie.c b/drivers/dma/dw-edma/dw-edma-pcie.c
index 1eafc602e17e..c1e796bd3ee9 100644
--- a/drivers/dma/dw-edma/dw-edma-pcie.c
+++ b/drivers/dma/dw-edma/dw-edma-pcie.c
@@ -185,24 +185,31 @@ static int dw_edma_pcie_probe(struct pci_dev *pdev,
 	/* Validating if PCI interrupts were enabled */
 	if (!pci_dev_msi_enabled(pdev)) {
 		pci_err(pdev, "enable interrupt failed\n");
-		return -EPERM;
+		err = -EPERM;
+		goto err_free_irq;
 	}
 
 	dw->irq = devm_kcalloc(dev, nr_irqs, sizeof(*dw->irq), GFP_KERNEL);
-	if (!dw->irq)
-		return -ENOMEM;
+	if (!dw->irq) {
+		err = -ENOMEM;
+		goto err_free_irq;
+	}
 
 	/* Starting eDMA driver */
 	err = dw_edma_probe(chip);
 	if (err) {
 		pci_err(pdev, "eDMA probe failed\n");
-		return err;
+		goto err_free_irq;
 	}
 
 	/* Saving data structure reference */
 	pci_set_drvdata(pdev, chip);
 
 	return 0;
+
+err_free_irq:
+	pci_free_irq_vectors(pdev);
+	return err;
 }
 
 static void dw_edma_pcie_remove(struct pci_dev *pdev)
-- 
2.25.0