linux-kernel - [PATCH] scsi: wd719x: fix error return code of wd719x_pci

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Message-Id: <20210305034244.6338-1-baijiaju1990@gmail.com>
Date:   Thu,  4 Mar 2021 19:42:44 -0800
From:   Jia-Ju Bai <baijiaju1990@...il.com>
To:     jejb@...ux.ibm.com, martin.petersen@...cle.com
Cc:     linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jia-Ju Bai <baijiaju1990@...il.com>
Subject: [PATCH] scsi: wd719x: fix error return code of wd719x_pci_probe()

When dma_set_mask() or pci_iomap() fails, no error return code of 
wd719x_pci_probe() is assigned.
To fix this bug, err is assigned with -EIO as error return code.

Reported-by: TOTE Robot <oslab@...nghua.edu.cn>
Signed-off-by: Jia-Ju Bai <baijiaju1990@...il.com>
---
 drivers/scsi/wd719x.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/scsi/wd719x.c b/drivers/scsi/wd719x.c
index edc8a139a60d..a334e3c9de45 100644
--- a/drivers/scsi/wd719x.c
+++ b/drivers/scsi/wd719x.c
@@ -902,6 +902,7 @@ static int wd719x_pci_probe(struct pci_dev *pdev, const struct pci_device_id *d)
 	if (err)
 		goto fail;
 
+	err = -EIO;
 	if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) {
 		dev_warn(&pdev->dev, "Unable to set 32-bit DMA mask\n");
 		goto disable_device;
@@ -922,6 +923,7 @@ static int wd719x_pci_probe(struct pci_dev *pdev, const struct pci_device_id *d)
 		goto release_region;
 
 	wd = shost_priv(sh);
+	err = -EIO;
 	wd->base = pci_iomap(pdev, 0, 0);
 	if (!wd->base)
 		goto free_host;
-- 
2.17.1