Commit a158906d authored by Eli Cohen's avatar Eli Cohen Committed by David S. Miller
Browse files

net/mlx5_core: Fix race in create EQ



After the EQ is created, it can possibly generate interrupts and the interrupt
handler is referencing eq->dev. It is therefore required to set eq->dev before
calling request_irq() so if an event is generated before request_irq() returns,
we will have a valid eq->dev field.
Signed-off-by: default avatarEli Cohen <eli@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b31f65fb
......@@ -374,15 +374,14 @@ int mlx5_create_map_eq(struct mlx5_core_dev *dev, struct mlx5_eq *eq, u8 vecidx,
snprintf(eq->name, MLX5_MAX_EQ_NAME, "%s@pci:%s",
name, pci_name(dev->pdev));
eq->eqn = out.eq_number;
eq->irqn = vecidx;
eq->dev = dev;
eq->doorbell = uar->map + MLX5_EQ_DOORBEL_OFFSET;
err = request_irq(table->msix_arr[vecidx].vector, mlx5_msix_handler, 0,
eq->name, eq);
if (err)
goto err_eq;
eq->irqn = vecidx;
eq->dev = dev;
eq->doorbell = uar->map + MLX5_EQ_DOORBEL_OFFSET;
err = mlx5_debug_eq_add(dev, eq);
if (err)
goto err_irq;
......
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