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mlx4_core: Initialize ctx_list and ctx_lock earlier 

We may call mlx4_dispatch_event() before mlx4_register_device() is
called for a device, because for example a catastrophic error happens
immediately after we enable interrupts.  Therefore priv->ctx_list and
priv->ctx_lock need to be initialized earlier.

This bug was actually exposed by the MSI-X bug that returned IRQ numbers 
to drivers in reverse order, so that the first FW command 
interrupt looked to mlx4 like a catastrophic error.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Roland Dreier 2007-06-07 11:51:58 -07:00
parent 09360d5408
commit b581401ed0
2 changed files with 2 additions and 3 deletions
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3
drivers/net/mlx4/intf.c
View File

@ -135,9 +135,6 @@ int mlx4_register_device(struct mlx4_dev *dev)
struct mlx4_priv *priv = mlx4_priv(dev); struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_interface *intf; struct mlx4_interface *intf;
INIT_LIST_HEAD(&priv->ctx_list);
spin_lock_init(&priv->ctx_lock);
mutex_lock(&intf_mutex); mutex_lock(&intf_mutex);
list_add_tail(&priv->dev_list, &dev_list); list_add_tail(&priv->dev_list, &dev_list);

2
drivers/net/mlx4/main.c
View File

@ -787,6 +787,8 @@ static int __devinit mlx4_init_one(struct pci_dev *pdev,
dev = &priv->dev; dev = &priv->dev;
dev->pdev = pdev; dev->pdev = pdev;
INIT_LIST_HEAD(&priv->ctx_list);
spin_lock_init(&priv->ctx_lock);
/* /*
* Now reset the HCA before we touch the PCI capabilities or * Now reset the HCA before we touch the PCI capabilities or