On Thu, Jul 20, 2017 at 07:33:53PM -0400, Keith Busch wrote:
> The driver has a special purpose for the vmd device's first, so this
> one shouldn't be considered for irq affinity.
>
> Signed-off-by: Keith Busch <keith.busch@xxxxxxxxx>
Applied both to pci/host-vmd for v4.14, thanks!
> ---
> drivers/pci/host/vmd.c | 12 ++++++++++--
> 1 file changed, 10 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/pci/host/vmd.c b/drivers/pci/host/vmd.c
> index e27ad2a..8cddf30 100644
> --- a/drivers/pci/host/vmd.c
> +++ b/drivers/pci/host/vmd.c
> @@ -662,6 +662,14 @@ static int vmd_probe(struct pci_dev *dev, const struct pci_device_id *id)
> struct vmd_dev *vmd;
> int i, err;
>
> + /*
> + * The first vector is reserved for special use, so start affinity at
> + * the second vector
> + */
> + struct irq_affinity affd = {
> + .pre_vectors = 1,
> + };
> +
> if (resource_size(&dev->resource[VMD_CFGBAR]) < (1 << 20))
> return -ENOMEM;
>
> @@ -687,8 +695,8 @@ static int vmd_probe(struct pci_dev *dev, const struct pci_device_id *id)
> if (vmd->msix_count < 0)
> return -ENODEV;
>
> - vmd->msix_count = pci_alloc_irq_vectors(dev, 1, vmd->msix_count,
> - PCI_IRQ_MSIX | PCI_IRQ_AFFINITY);
> + vmd->msix_count = pci_alloc_irq_vectors_affinity(dev, 1, vmd->msix_count,
> + PCI_IRQ_MSIX | PCI_IRQ_AFFINITY, &affd);
> if (vmd->msix_count < 0)
> return vmd->msix_count;
>
> --
> 2.5.5
>
