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path: root/drivers/net/ethernet/mellanox/mlx4/main.c
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Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx4/main.c')
-rw-r--r--drivers/net/ethernet/mellanox/mlx4/main.c14
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index d711158b0d4b..936c15364739 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -150,6 +150,8 @@ struct mlx4_port_config {
struct pci_dev *pdev;
};
+static atomic_t pf_loading = ATOMIC_INIT(0);
+
int mlx4_check_port_params(struct mlx4_dev *dev,
enum mlx4_port_type *port_type)
{
@@ -749,7 +751,7 @@ static void mlx4_request_modules(struct mlx4_dev *dev)
has_eth_port = true;
}
- if (has_ib_port)
+ if (has_ib_port || (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE))
request_module_nowait(IB_DRV_NAME);
if (has_eth_port)
request_module_nowait(EN_DRV_NAME);
@@ -1407,6 +1409,11 @@ static int mlx4_init_slave(struct mlx4_dev *dev)
u32 slave_read;
u32 cmd_channel_ver;
+ if (atomic_read(&pf_loading)) {
+ mlx4_warn(dev, "PF is not ready. Deferring probe\n");
+ return -EPROBE_DEFER;
+ }
+
mutex_lock(&priv->cmd.slave_cmd_mutex);
priv->cmd.max_cmds = 1;
mlx4_warn(dev, "Sending reset\n");
@@ -2319,7 +2326,11 @@ static int __mlx4_init_one(struct pci_dev *pdev, int pci_dev_data)
if (num_vfs) {
mlx4_warn(dev, "Enabling SR-IOV with %d VFs\n", num_vfs);
+
+ atomic_inc(&pf_loading);
err = pci_enable_sriov(pdev, num_vfs);
+ atomic_dec(&pf_loading);
+
if (err) {
mlx4_err(dev, "Failed to enable SR-IOV, continuing without SR-IOV (err = %d).\n",
err);
@@ -2684,6 +2695,7 @@ static struct pci_driver mlx4_driver = {
.name = DRV_NAME,
.id_table = mlx4_pci_table,
.probe = mlx4_init_one,
+ .shutdown = mlx4_remove_one,
.remove = mlx4_remove_one,
.err_handler = &mlx4_err_handler,
};