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net/mlx4_core: Preserve pci_dev_data after __mlx4_remove_one()

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[ Upstream commit befdf8978a ]

This patch wrap up a helper function __mlx4_remove_one() which does the tear
down function but preserve the drv_data. Functions like
mlx4_pci_err_detected() and mlx4_restart_one() will call this one with out
releasing drvdata.

Signed-off-by: Wei Yang <weiyang@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Wei Yang 2014-06-01 15:25:20 +08:00 committed by Greg Kroah-Hartman
parent ff2005a4a5
commit 6ddc168fe0
2 changed files with 89 additions and 69 deletions
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157
drivers/net/ethernet/mellanox/mlx4/main.c
View file

@ -1798,15 +1798,8 @@ static int __mlx4_init_one(struct pci_dev *pdev, int pci_dev_data)
/* Allow large DMA segments, up to the firmware limit of 1 GB */
dma_set_max_seg_size(&pdev->dev, 1024 * 1024 * 1024);
priv = kzalloc(sizeof *priv, GFP_KERNEL);
if (!priv) {
dev_err(&pdev->dev, "Device struct alloc failed, "
"aborting.\n");
err = -ENOMEM;
goto err_release_regions;
}
dev = &priv->dev;
dev = pci_get_drvdata(pdev);
priv = mlx4_priv(dev);
dev->pdev = pdev;
INIT_LIST_HEAD(&priv->ctx_list);
spin_lock_init(&priv->ctx_lock);
@ -1967,8 +1960,7 @@ slave_start:
mlx4_sense_init(dev);
mlx4_start_sense(dev);
priv->pci_dev_data = pci_dev_data;
pci_set_drvdata(pdev, dev);
priv->removed = 0;
return 0;
@ -2035,73 +2027,100 @@ err_disable_pdev:
static int __devinit mlx4_init_one(struct pci_dev *pdev,
const struct pci_device_id *id)
{
struct mlx4_priv *priv;
struct mlx4_dev *dev;
printk_once(KERN_INFO "%s", mlx4_version);
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
dev = &priv->dev;
pci_set_drvdata(pdev, dev);
priv->pci_dev_data = id->driver_data;
return __mlx4_init_one(pdev, id->driver_data);
}
static void __mlx4_remove_one(struct pci_dev *pdev)
{
struct mlx4_dev *dev = pci_get_drvdata(pdev);
struct mlx4_priv *priv = mlx4_priv(dev);
int pci_dev_data;
int p;
if (priv->removed)
return;
pci_dev_data = priv->pci_dev_data;
/* in SRIOV it is not allowed to unload the pf's
* driver while there are alive vf's */
if (mlx4_is_master(dev)) {
if (mlx4_how_many_lives_vf(dev))
printk(KERN_ERR "Removing PF when there are assigned VF's !!!\n");
}
mlx4_stop_sense(dev);
mlx4_unregister_device(dev);
for (p = 1; p <= dev->caps.num_ports; p++) {
mlx4_cleanup_port_info(&priv->port[p]);
mlx4_CLOSE_PORT(dev, p);
}
mlx4_cleanup_counters_table(dev);
mlx4_cleanup_mcg_table(dev);
mlx4_cleanup_qp_table(dev);
mlx4_cleanup_srq_table(dev);
mlx4_cleanup_cq_table(dev);
mlx4_cmd_use_polling(dev);
mlx4_cleanup_eq_table(dev);
mlx4_cleanup_mr_table(dev);
mlx4_cleanup_xrcd_table(dev);
mlx4_cleanup_pd_table(dev);
if (mlx4_is_master(dev))
mlx4_free_resource_tracker(dev);
iounmap(priv->kar);
mlx4_uar_free(dev, &priv->driver_uar);
mlx4_cleanup_uar_table(dev);
if (!mlx4_is_slave(dev))
mlx4_clear_steering(dev);
mlx4_free_eq_table(dev);
if (mlx4_is_master(dev))
mlx4_multi_func_cleanup(dev);
mlx4_close_hca(dev);
if (mlx4_is_slave(dev))
mlx4_multi_func_cleanup(dev);
mlx4_cmd_cleanup(dev);
if (dev->flags & MLX4_FLAG_MSI_X)
pci_disable_msix(pdev);
if (num_vfs && (dev->flags & MLX4_FLAG_SRIOV)) {
mlx4_warn(dev, "Disabling sriov\n");
pci_disable_sriov(pdev);
}
if (!mlx4_is_slave(dev))
mlx4_free_ownership(dev);
pci_release_regions(pdev);
pci_disable_device(pdev);
memset(priv, 0, sizeof(*priv));
priv->pci_dev_data = pci_dev_data;
priv->removed = 1;
}
static void mlx4_remove_one(struct pci_dev *pdev)
{
struct mlx4_dev *dev = pci_get_drvdata(pdev);
struct mlx4_priv *priv = mlx4_priv(dev);
int p;
if (dev) {
/* in SRIOV it is not allowed to unload the pf's
* driver while there are alive vf's */
if (mlx4_is_master(dev)) {
if (mlx4_how_many_lives_vf(dev))
printk(KERN_ERR "Removing PF when there are assigned VF's !!!\n");
}
mlx4_stop_sense(dev);
mlx4_unregister_device(dev);
for (p = 1; p <= dev->caps.num_ports; p++) {
mlx4_cleanup_port_info(&priv->port[p]);
mlx4_CLOSE_PORT(dev, p);
}
mlx4_cleanup_counters_table(dev);
mlx4_cleanup_mcg_table(dev);
mlx4_cleanup_qp_table(dev);
mlx4_cleanup_srq_table(dev);
mlx4_cleanup_cq_table(dev);
mlx4_cmd_use_polling(dev);
mlx4_cleanup_eq_table(dev);
mlx4_cleanup_mr_table(dev);
mlx4_cleanup_xrcd_table(dev);
mlx4_cleanup_pd_table(dev);
if (mlx4_is_master(dev))
mlx4_free_resource_tracker(dev);
iounmap(priv->kar);
mlx4_uar_free(dev, &priv->driver_uar);
mlx4_cleanup_uar_table(dev);
if (!mlx4_is_slave(dev))
mlx4_clear_steering(dev);
mlx4_free_eq_table(dev);
if (mlx4_is_master(dev))
mlx4_multi_func_cleanup(dev);
mlx4_close_hca(dev);
if (mlx4_is_slave(dev))
mlx4_multi_func_cleanup(dev);
mlx4_cmd_cleanup(dev);
if (dev->flags & MLX4_FLAG_MSI_X)
pci_disable_msix(pdev);
if (num_vfs && (dev->flags & MLX4_FLAG_SRIOV)) {
mlx4_warn(dev, "Disabling sriov\n");
pci_disable_sriov(pdev);
}
if (!mlx4_is_slave(dev))
mlx4_free_ownership(dev);
kfree(priv);
pci_release_regions(pdev);
pci_disable_device(pdev);
pci_set_drvdata(pdev, NULL);
}
__mlx4_remove_one(pdev);
kfree(priv);
pci_set_drvdata(pdev, NULL);
}
int mlx4_restart_one(struct pci_dev *pdev)
@ -2111,7 +2130,7 @@ int mlx4_restart_one(struct pci_dev *pdev)
int pci_dev_data;
pci_dev_data = priv->pci_dev_data;
mlx4_remove_one(pdev);
__mlx4_remove_one(pdev);
return __mlx4_init_one(pdev, pci_dev_data);
}

1
drivers/net/ethernet/mellanox/mlx4/mlx4.h
View file

@ -723,6 +723,7 @@ struct mlx4_priv {
spinlock_t ctx_lock;
int pci_dev_data;
int removed;
struct list_head pgdir_list;
struct mutex pgdir_mutex;