netdev - [PATCH net 2/4] octeon_ep: cancel tx_timeout

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Date: Thu, 10 Aug 2023 17:01:12 +0200
From: Michal Schmidt <mschmidt@...hat.com>
To: netdev@...r.kernel.org
Cc: Veerasenareddy Burru <vburru@...vell.com>,
	Sathesh Edara <sedara@...vell.com>,
	"David S. Miller" <davem@...emloft.net>,
	Abhijit Ayarekar <aayarekar@...vell.com>,
	Satananda Burla <sburla@...vell.com>,
	Vimlesh Kumar <vimleshk@...vell.com>
Subject: [PATCH net 2/4] octeon_ep: cancel tx_timeout_task later in remove sequence

tx_timeout_task is canceled too early when removing the driver. Nothing
prevents .ndo_tx_timeout from triggering and queuing the work again.

Better cancel it after the netdev is unregistered.
It's harmless for octep_tx_timeout_task to run in the window between the
unregistration and cancelation, because it checks netif_running.

Fixes: 862cd659a6fb ("octeon_ep: Add driver framework and device initialization")
Signed-off-by: Michal Schmidt <mschmidt@...hat.com>
---
 drivers/net/ethernet/marvell/octeon_ep/octep_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_main.c b/drivers/net/ethernet/marvell/octeon_ep/octep_main.c
index 43eb6e871351..d8066bff5f7b 100644
--- a/drivers/net/ethernet/marvell/octeon_ep/octep_main.c
+++ b/drivers/net/ethernet/marvell/octeon_ep/octep_main.c
@@ -1200,12 +1200,12 @@ static void octep_remove(struct pci_dev *pdev)
 	if (!oct)
 		return;
 
-	cancel_work_sync(&oct->tx_timeout_task);
 	cancel_work_sync(&oct->ctrl_mbox_task);
 	netdev = oct->netdev;
 	if (netdev->reg_state == NETREG_REGISTERED)
 		unregister_netdev(netdev);
 
+	cancel_work_sync(&oct->tx_timeout_task);
 	oct->poll_non_ioq_intr = false;
 	cancel_delayed_work_sync(&oct->intr_poll_task);
 	octep_device_cleanup(oct);
-- 
2.41.0