PCI/MSI: Remove unused pci_dev_has_special_msi_domain()

The check for special MSI domains like VMD which prevents the interrupt
remapping code to overwrite device::msi::domain is not longer required and
has been replaced by an x86 specific version which is aware of MSI parent
domains.

Remove it.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20221124232326.093093200@linutronix.de

diff --git a/drivers/pci/msi/irqdomain.c b/drivers/pci/msi/irqdomain.c
index be3d50ffc09369d3c418aad87bae4d15b8df595e..473640381f92037562323c6de43fe2ca0147a05e 100644 (file)
--- a/drivers/pci/msi/irqdomain.c
+++ b/drivers/pci/msi/irqdomain.c
@@ -414,24 +414,3 @@ struct irq_domain *pci_msi_get_device_domain(struct pci_dev *pdev)
                                             DOMAIN_BUS_PCI_MSI);
        return dom;
 }
-
-/**
- * pci_dev_has_special_msi_domain - Check whether the device is handled by
- *                                 a non-standard PCI-MSI domain
- * @pdev:      The PCI device to check.
- *
- * Returns: True if the device irqdomain or the bus irqdomain is
- * non-standard PCI/MSI.
- */
-bool pci_dev_has_special_msi_domain(struct pci_dev *pdev)
-{
-       struct irq_domain *dom = dev_get_msi_domain(&pdev->dev);
-
-       if (!dom)
-               dom = dev_get_msi_domain(&pdev->bus->dev);
-
-       if (!dom)
-               return true;
-
-       return dom->bus_token != DOMAIN_BUS_PCI_MSI;
-}

diff --git a/include/linux/msi.h b/include/linux/msi.h
index b4ab00562a298c72e6acc76c0b3f1f25c9c12698..b5dda4bf4156017a19eed746bb25932fa0676ff1 100644 (file)
--- a/include/linux/msi.h
+++ b/include/linux/msi.h
@@ -617,7 +617,6 @@ struct irq_domain *pci_msi_create_irq_domain(struct fwnode_handle *fwnode,
                                             struct irq_domain *parent);
 u32 pci_msi_domain_get_msi_rid(struct irq_domain *domain, struct pci_dev *pdev);
 struct irq_domain *pci_msi_get_device_domain(struct pci_dev *pdev);
-bool pci_dev_has_special_msi_domain(struct pci_dev *pdev);
 #else /* CONFIG_PCI_MSI */
 static inline struct irq_domain *pci_msi_get_device_domain(struct pci_dev *pdev)
 {