linux-kernel - [PATCH] ethernet: sun: Free the coherent when failing in probing

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Message-Id: <1646492104-23040-1-git-send-email-zheyuma97@gmail.com>
Date:   Sat,  5 Mar 2022 14:55:04 +0000
From:   Zheyu Ma <zheyuma97@...il.com>
To:     davem@...emloft.net, kuba@...nel.org
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Zheyu Ma <zheyuma97@...il.com>
Subject: [PATCH] ethernet: sun: Free the coherent when failing in probing

When the driver fails to register net device, it should free the DMA
region first, and then do other cleanup.

Signed-off-by: Zheyu Ma <zheyuma97@...il.com>
---
 drivers/net/ethernet/sun/sunhme.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/sun/sunhme.c b/drivers/net/ethernet/sun/sunhme.c
index ad9029ae6848..77e5dffb558f 100644
--- a/drivers/net/ethernet/sun/sunhme.c
+++ b/drivers/net/ethernet/sun/sunhme.c
@@ -3146,7 +3146,7 @@ static int happy_meal_pci_probe(struct pci_dev *pdev,
 	if (err) {
 		printk(KERN_ERR "happymeal(PCI): Cannot register net device, "
 		       "aborting.\n");
-		goto err_out_iounmap;
+		goto err_out_free_coherent;
 	}
 
 	pci_set_drvdata(pdev, hp);
@@ -3179,6 +3179,10 @@ static int happy_meal_pci_probe(struct pci_dev *pdev,
 
 	return 0;
 
+err_out_free_coherent:
+	dma_free_coherent(hp->dma_dev, PAGE_SIZE,
+			  hp->happy_block, hp->hblock_dvma);
+
 err_out_iounmap:
 	iounmap(hp->gregs);
 
-- 
2.25.1