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mlx4: protect mlx4_en_start_port in mlx4_en_restart with rtnl_lock

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mlx4_en_start_port requires rtnl_lock to be held.

Cc: Eugenia Emantayev <eugenia@mellanox.com>
Cc: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hannes Frederic Sowa 2016-04-18 21:19:44 +02:00 committed by David S. Miller
parent 41419b9303
commit 0c5c3252c4
1 changed files with 2 additions and 0 deletions
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2
drivers/net/ethernet/mellanox/mlx4/en_netdev.c
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@ -1856,6 +1856,7 @@ static void mlx4_en_restart(struct work_struct *work)
en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port); en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
rtnl_lock();
mutex_lock(&mdev->state_lock); mutex_lock(&mdev->state_lock);
if (priv->port_up) { if (priv->port_up) {
mlx4_en_stop_port(dev, 1); mlx4_en_stop_port(dev, 1);
@ -1863,6 +1864,7 @@ static void mlx4_en_restart(struct work_struct *work)
en_err(priv, "Failed restarting port %d\n", priv->port); en_err(priv, "Failed restarting port %d\n", priv->port);
} }
mutex_unlock(&mdev->state_lock); mutex_unlock(&mdev->state_lock);
rtnl_unlock();
} }
static void mlx4_en_clear_stats(struct net_device *dev) static void mlx4_en_clear_stats(struct net_device *dev)