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PCI/MSI: Reject MSI-X early
Similar to PCI multi-MSI reject MSI-X enablement when a irq domain is attached to the device which does not support MSI-X. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://lore.kernel.org/r/20221111122015.631728309@linutronix.de
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@ -762,6 +762,10 @@ int __pci_enable_msix_range(struct pci_dev *dev, struct msix_entry *entries, int
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if (WARN_ON_ONCE(dev->msix_enabled))
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return -EINVAL;
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/* Check MSI-X early on irq domain enabled architectures */
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if (!pci_msi_domain_supports(dev, MSI_FLAG_PCI_MSIX, ALLOW_LEGACY))
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return -ENOTSUPP;
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if (!pci_msi_supported(dev, nvec) || dev->current_state != PCI_D0)
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return -EINVAL;
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