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net/mlx4_en: Fix panic during reboot

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Fix a kernel panic that occurs as a result of an asynchronous event
handled in roce_gid_mgmt:
mlx4_en_get_drvinfo is called and accesses freed resources.

This happens in a shutdown flow only, since pci device is destroyed
while netdevice is still alive.

Fixes: c27a02cd94 ("mlx4_en: Add driver for Mellanox ConnectX 10GbE NIC")
Signed-off-by: Eugenia Emantayev <eugenia@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eugenia Emantayev 2016-10-27 16:27:18 +03:00 committed by David S. Miller
parent 8d59de8f7b
commit 9d2afba058
1 changed files with 1 additions and 0 deletions
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drivers/net/ethernet/mellanox/mlx4/en_netdev.c
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@ -2201,6 +2201,7 @@ void mlx4_en_destroy_netdev(struct net_device *dev)
if (!shutdown)
free_netdev(dev);
dev->ethtool_ops = NULL;
}
static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)