The SMMUv3 driver, which can be built without CONFIG_PCI, will soon gain
support for PRI. Partially revert commit c6e9aefbf9db ("PCI/ATS: Remove
unused PRI and PASID stubs") to re-introduce the PRI stubs, and avoid
adding more #ifdefs to the SMMU driver.
Acked-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@xxxxxxxxxxxxxxx>
Signed-off-by: Jean-Philippe Brucker <jean-philippe@xxxxxxxxxx>
---
include/linux/pci-ats.h | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/include/linux/pci-ats.h b/include/linux/pci-ats.h
index f75c307f346de..e9e266df9b37c 100644
--- a/include/linux/pci-ats.h
+++ b/include/linux/pci-ats.h
@@ -28,6 +28,14 @@ int pci_enable_pri(struct pci_dev *pdev, u32 reqs);
void pci_disable_pri(struct pci_dev *pdev);
int pci_reset_pri(struct pci_dev *pdev);
int pci_prg_resp_pasid_required(struct pci_dev *pdev);
+#else /* CONFIG_PCI_PRI */
+static inline int pci_enable_pri(struct pci_dev *pdev, u32 reqs)
+{ return -ENODEV; }
+static inline void pci_disable_pri(struct pci_dev *pdev) { }
+static inline int pci_reset_pri(struct pci_dev *pdev)
+{ return -ENODEV; }
+static inline int pci_prg_resp_pasid_required(struct pci_dev *pdev)
+{ return 0; }
#endif /* CONFIG_PCI_PRI */
#ifdef CONFIG_PCI_PASID
--
2.26.2
