linux-kernel - [PATCH] ethernet: tulip: fix missing pci_disable_device() on error in tulip_init

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Date:   Fri, 6 May 2022 17:42:50 +0800
From:   Yang Yingliang <yangyingliang@...wei.com>
To:     <linux-kernel@...r.kernel.org>, <linux-parisc@...r.kernel.org>,
        <netdev@...r.kernel.org>
CC:     <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>
Subject: [PATCH] ethernet: tulip: fix missing pci_disable_device() on error in tulip_init_one()

Fix the missing pci_disable_device() before return
from tulip_init_one() in the error handling case.

Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
---
 drivers/net/ethernet/dec/tulip/tulip_core.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/dec/tulip/tulip_core.c b/drivers/net/ethernet/dec/tulip/tulip_core.c
index 79df5a72877b..0040dcaab945 100644
--- a/drivers/net/ethernet/dec/tulip/tulip_core.c
+++ b/drivers/net/ethernet/dec/tulip/tulip_core.c
@@ -1399,8 +1399,10 @@ static int tulip_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	/* alloc_etherdev ensures aligned and zeroed private structures */
 	dev = alloc_etherdev (sizeof (*tp));
-	if (!dev)
+	if (!dev) {
+		pci_disable_device(pdev);
 		return -ENOMEM;
+	}
 
 	SET_NETDEV_DEV(dev, &pdev->dev);
 	if (pci_resource_len (pdev, 0) < tulip_tbl[chip_idx].io_size) {
@@ -1785,6 +1787,7 @@ static int tulip_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 err_out_free_netdev:
 	free_netdev (dev);
+	pci_disable_device(pdev);
 	return -ENODEV;
 }
 
-- 
2.25.1