> -----Original Message-----
> From: Nitesh Narayan Lal <nitesh@xxxxxxxxxx>
> Sent: Tuesday, July 20, 2021 6:26 PM
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> Subject: [PATCH v5 06/14] RDMA/irdma: 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 <nitesh@xxxxxxxxxx>
> ---
> drivers/infiniband/hw/irdma/hw.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/infiniband/hw/irdma/hw.c
> b/drivers/infiniband/hw/irdma/hw.c
> index 7afb8a6a0526..ec8de708a4df 100644
> --- a/drivers/infiniband/hw/irdma/hw.c
> +++ b/drivers/infiniband/hw/irdma/hw.c
> @@ -537,7 +537,7 @@ static void irdma_destroy_irq(struct irdma_pci_f *rf,
> struct irdma_sc_dev *dev = &rf->sc_dev;
>
> dev->irq_ops->irdma_dis_irq(dev, msix_vec->idx);
> - irq_set_affinity_hint(msix_vec->irq, NULL);
> + irq_update_affinity_hint(msix_vec->irq, NULL);
> free_irq(msix_vec->irq, dev_id);
> }
>
> @@ -1087,7 +1087,7 @@ irdma_cfg_ceq_vector(struct irdma_pci_f *rf,
> struct irdma_ceq *iwceq,
> }
> cpumask_clear(&msix_vec->mask);
> cpumask_set_cpu(msix_vec->cpu_affinity, &msix_vec->mask);
> - irq_set_affinity_hint(msix_vec->irq, &msix_vec->mask);
> + irq_update_affinity_hint(msix_vec->irq, &msix_vec->mask);
> if (status) {
> ibdev_dbg(&rf->iwdev->ibdev, "ERR: ceq irq config fail\n");
> return IRDMA_ERR_CFG;
> --
> 2.27.0
Acked-by: Tatyana Nikolova <tatyana.e.nikolova@xxxxxxxxx>
