net/mlx5: Skip clock update work when device is in error state

When device is in error state, marked by the flag MLX5_DEVICE_STATE_INTERNAL_ERROR, the HW and PCI may not be accessible and so clock update work should be skipped. Furthermore, such access through PCI in error state, after calling mlx5_pci_disable_device() can result in failing to recover from pci errors. Fixes: ef9814d ("net/mlx5e: Add HW timestamping (TS) support") Reported-and-tested-by: Ganesh G R <[email protected]> Closes: https://lore.kernel.org/netdev/[email protected] Signed-off-by: Moshe Shemesh <[email protected]> Reviewed-by: Aya Levin <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
niw · Aug 7, 2023 · d006207 · d006207
1 parent 86ed7b7
commit d006207
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c b/drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c
@@ -227,10 +227,15 @@ static void mlx5_timestamp_overflow(struct work_struct *work)
 	clock = container_of(timer, struct mlx5_clock, timer);
 	mdev = container_of(clock, struct mlx5_core_dev, clock);
 
+	if (mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR)
+		goto out;
+
 	write_seqlock_irqsave(&clock->lock, flags);
 	timecounter_read(&timer->tc);
 	mlx5_update_clock_info_page(mdev);
 	write_sequnlock_irqrestore(&clock->lock, flags);
+
+out:
 	schedule_delayed_work(&timer->overflow_work, timer->overflow_period);
 }