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net: qlogic: fix a potential NULL pointer dereference 

In case create_singlethread_workqueue fails, the fix returns
-ENOMEM to avoid NULL pointer dereference.

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kangjie Lu 2019-03-12 02:06:47 -05:00 committed by David S. Miller
parent 10010493c1
commit eb32cfcdef
1 changed files with 6 additions and 0 deletions
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6
drivers/net/ethernet/qlogic/qla3xxx.c
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@ -3886,6 +3886,12 @@ static int ql3xxx_probe(struct pci_dev *pdev,
netif_stop_queue(ndev);
qdev->workqueue = create_singlethread_workqueue(ndev->name);
if (!qdev->workqueue) {
unregister_netdev(ndev);
err = -ENOMEM;
goto err_out_iounmap;
}
INIT_DELAYED_WORK(&qdev->reset_work, ql_reset_work);
INIT_DELAYED_WORK(&qdev->tx_timeout_work, ql_tx_timeout_work);
INIT_DELAYED_WORK(&qdev->link_state_work, ql_link_state_machine_work);