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Commit 9b8061a6 authored by Yang Yingliang's avatar Yang Yingliang Committed by Greg Kroah-Hartman
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net: pch_gbe: fix pci device refcount leak while module exiting 



[ Upstream commit 5619537284f1017e9f6c7500b02b859b3830a06d ]

As comment of pci_get_domain_bus_and_slot() says, it returns
a pci device with refcount increment, when finish using it,
the caller must decrement the reference count by calling
pci_dev_put().

In pch_gbe_probe(), pci_get_domain_bus_and_slot() is called,
so in error path in probe() and remove() function, pci_dev_put()
should be called to avoid refcount leak. Compile tested only.

Fixes: 1a0bdadb ("net/pch_gbe: supports eg20t ptp clock")
Signed-off-by: default avatarYang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20221117135148.301014-1-yangyingliang@huawei.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 9a39ea43

drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c

+4 −1
Original line number Diff line number Diff line
@@ -2481,6 +2481,7 @@ static void pch_gbe_remove(struct pci_dev *pdev) 
	unregister_netdev(netdev);



	pch_gbe_phy_hw_reset(&adapter->hw);

	pci_dev_put(adapter->ptp_pdev);



	free_netdev(netdev);

}
@@ -2562,7 +2563,7 @@ static int pch_gbe_probe(struct pci_dev *pdev, 
	/* setup the private structure */

	ret = pch_gbe_sw_init(adapter);

	if (ret)

		goto err_free_netdev;

		goto err_put_dev;



	/* Initialize PHY */

	ret = pch_gbe_init_phy(adapter);
@@ -2620,6 +2621,8 @@ static int pch_gbe_probe(struct pci_dev *pdev, 


err_free_adapter:

	pch_gbe_phy_hw_reset(&adapter->hw);

err_put_dev:

	pci_dev_put(adapter->ptp_pdev);

err_free_netdev:

	free_netdev(netdev);

	return ret;