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Make sure Giant is locked when allocating bus resources in mlx5core.

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During health care IRQ resources will be reallocated.
Newbus requires that Giant is locked before accessing
these resources.

MFC after:	3 days
Sponsored by:	Mellanox Technologies
This commit is contained in:
Hans Petter Selasky 2018-03-30 19:49:35 +00:00
parent 92d23c82cd
commit ca2345a05d
1 changed files with 4 additions and 0 deletions
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4
sys/dev/mlx5/mlx5_core/mlx5_health.c
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@ -300,6 +300,8 @@ static void health_recover(struct work_struct *work)
priv = container_of(health, struct mlx5_priv, health);
dev = container_of(priv, struct mlx5_core_dev, priv);
mtx_lock(&Giant); /* XXX newbus needs this */
if (sensor_pci_no_comm(dev)) {
dev_err(&dev->pdev->dev, "health recovery flow aborted, PCI reads still not working\n");
recover = false;
@ -322,6 +324,8 @@ static void health_recover(struct work_struct *work)
dev_err(&dev->pdev->dev, "starting health recovery flow\n");
mlx5_recover_device(dev);
}
mtx_unlock(&Giant);
}
/* How much time to wait until health resetting the driver (in msecs) */