Commit 9b022a6e authored Jul 25, 2016 by Alex Vesker Committed by David S. Miller Jul 25, 2016

net/mlx4_core: Check device state before unregistering it



Verify that the device state is registered before un-registering it.
This check is required to prevent an OOPS on flows that do
re-registration of the device and its previous state was
unregistered.

Fixes: 225c7b1f ("IB/mlx4: Add a driver Mellanox ConnectX InfiniBand adapters")
Signed-off-by: Alex Vesker <valex@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 86cb13e4

drivers/net/ethernet/mellanox/mlx4/intf.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -218,6 +218,9 @@ void mlx4_unregister_device(struct mlx4_dev *dev)
		struct mlx4_priv *priv = mlx4_priv(dev);
		struct mlx4_interface *intf;

		if (!(dev->persist->interface_state & MLX4_INTERFACE_STATE_UP))
		return;

		mlx4_stop_catas_poll(dev);
		mutex_lock(&intf_mutex);