From: Alex Vesker <valex@xxxxxxxxxxxx>
commit 9b022a6e0f26af108b9105b16b310393c898d9bd upstream.
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: 225c7b1feef1 ("IB/mlx4: Add a driver Mellanox ConnectX InfiniBand adapters")
Signed-off-by: Alex Vesker <valex@xxxxxxxxxxxx>
Signed-off-by: Tariq Toukan <tariqt@xxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/ethernet/mellanox/mlx4/intf.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/net/ethernet/mellanox/mlx4/intf.c
+++ b/drivers/net/ethernet/mellanox/mlx4/intf.c
@@ -217,6 +217,9 @@ void mlx4_unregister_device(struct mlx4_
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);
if (dev->persist->interface_state & MLX4_INTERFACE_STATE_DELETION &&
mlx4_is_slave(dev)) {
