linux-kernel - [PATCH] scsi: wd719x: Return proper error code when dma_set

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Message-Id: <1646060055-11361-1-git-send-email-zheyuma97@gmail.com>
Date:   Mon, 28 Feb 2022 14:54:15 +0000
From:   Zheyu Ma <zheyuma97@...il.com>
To:     jejb@...ux.ibm.com, martin.petersen@...cle.com
Cc:     linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        Zheyu Ma <zheyuma97@...il.com>
Subject: [PATCH] scsi: wd719x: Return proper error code when dma_set_mask() fails

During the process of driver probing, the probe function should return < 0
for failure, otherwise, the kernel will treat value >= 0 as success.

Signed-off-by: Zheyu Ma <zheyuma97@...il.com>
---
 drivers/scsi/wd719x.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/wd719x.c b/drivers/scsi/wd719x.c
index 1a7947554581..2b24ef387d57 100644
--- a/drivers/scsi/wd719x.c
+++ b/drivers/scsi/wd719x.c
@@ -904,7 +904,8 @@ static int wd719x_pci_probe(struct pci_dev *pdev, const struct pci_device_id *d)
 	if (err)
 		goto fail;
 
-	if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) {
+	err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
+	if (err) {
 		dev_warn(&pdev->dev, "Unable to set 32-bit DMA mask\n");
 		goto disable_device;
 	}
-- 
2.25.1