On Mon, Dec 06, 2021 at 11:39:34PM +0100, Thomas Gleixner wrote:
> instead of fiddling with MSI descriptors.
> 
> Signed-off-by: Thomas Gleixner <t...@linutronix.de>
> Reviewed-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
> Reviewed-by: Jason Gunthorpe <j...@nvidia.com>
>  arch/powerpc/platforms/pseries/msi.c |    4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> +++ b/arch/powerpc/platforms/pseries/msi.c
> @@ -447,9 +447,9 @@ static int rtas_prepare_msi_irqs(struct
>  static int pseries_msi_ops_prepare(struct irq_domain *domain, struct device 
> *dev,
>                                  int nvec, msi_alloc_info_t *arg)
>  {
> +     bool is_msix = msi_device_has_property(dev, MSI_PROP_PCI_MSIX);
> +     int type = is_msix ? PCI_CAP_ID_MSIX : PCI_CAP_ID_MSI;
>       struct pci_dev *pdev = to_pci_dev(dev);

We have the pci_dev here, why not just do something like

   bool is_msix = pdev->msix_enabled;

?

Jason

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