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Subject[PATCH v2 13/14] net/mlx5: Use irq_update_affinity_hint
The driver uses irq_set_affinity_hint() to update the affinity_hint mask
that is consumed by the userspace to distribute the interrupts. However,
under the hood irq_set_affinity_hint() also applies the provided cpumask
(if not NULL) as the affinity for the given interrupt which is an
undocumented side effect.

To remove this side effect irq_set_affinity_hint() has been marked
as deprecated and new interfaces have been introduced. Hence, replace the
irq_set_affinity_hint() with the new interface irq_update_affinity_hint()
that only updates the affinity_hint pointer.

Signed-off-by: Nitesh Narayan Lal <>
Reviewed-by: Leon Romanovsky <>
drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c b/drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c
index c3373fb1cd7f..a1b9434f4e25 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c
@@ -276,8 +276,8 @@ static int set_comp_irq_affinity_hint(struct mlx5_core_dev *mdev, int i)
cpumask_set_cpu(cpumask_local_spread(i, mdev->priv.numa_node),
- irq_set_affinity_hint(irqn, irq->mask))
- mlx5_core_warn(mdev, "irq_set_affinity_hint failed, irq 0x%.4x",
+ irq_update_affinity_hint(irqn, irq->mask))
+ mlx5_core_warn(mdev, "irq_update_affinity_hint failed, irq 0x%.4x",

return 0;
@@ -291,7 +291,7 @@ static void clear_comp_irq_affinity_hint(struct mlx5_core_dev *mdev, int i)

irq = mlx5_irq_get(mdev, vecidx);
irqn = pci_irq_vector(mdev->pdev, vecidx);
- irq_set_affinity_hint(irqn, NULL);
+ irq_update_affinity_hint(irqn, NULL);

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