[V3,14/33] PCI/MSI: Remove unused pci_dev_has_special_msi_domain()

Commit Message

Thomas Gleixner Nov. 24, 2022, 11:26 p.m. UTC

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has been replaced by an x86 specific version which is aware of MSI parent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 <[e-mail]>
Acked-by: Bjorn Helgaas <[e-mail]>
---
 drivers/pci/msi/irqdomain.c |   21 ---------------------
 include/linux/msi.h         |    1 -
 2 files changed, 22 deletions(-)

Patch

--- a/drivers/pci/msi/irqdomain.c
+++ b/drivers/pci/msi/irqdomain.c
@@ -414,24 +414,3 @@  struct irq_domain *pci_msi_get_device_do
 					     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;
-}
--- a/include/linux/msi.h
+++ b/include/linux/msi.h
@@ -609,7 +609,6 @@  struct irq_domain *pci_msi_create_irq_do
 					     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)
 {