net/mlx5: Fix wrong comment

A control irq may be allocated from the parent device's pool in case
there is no SF dedicated pool. This could happen when there are not
enough vectors available for SFs.

Signed-off-by: Eli Cohen <elic@nvidia.com>
Reviewed-by: Shay Drory <shayd@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c b/drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c
index 6bde18bcd42f5df399505a1aec2b46c4b4142552..c72736f1571fd9798a66870d34a1f9743afc4f6d 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c
@@ -394,7 +394,9 @@ struct mlx5_irq *mlx5_ctrl_irq_request(struct mlx5_core_dev *dev)
                return ERR_PTR(-ENOMEM);
        cpumask_copy(req_mask, cpu_online_mask);
        if (!mlx5_irq_pool_is_sf_pool(pool)) {
-               /* In case we are allocating a control IRQ for PF/VF */
+               /* In case we are allocating a control IRQ from a pci device's pool.
+                * This can happen also for a SF if the SFs pool is empty.
+                */
                if (!pool->xa_num_irqs.max) {
                        cpumask_clear(req_mask);
                        /* In case we only have a single IRQ for PF/VF */