diff mbox series

[v4,24/26] PCI/ATS: Add PRI stubs

Message ID 20200224182401.353359-25-jean-philippe@linaro.org
State New
Headers show
Series iommu: Shared Virtual Addressing and SMMUv3 support | expand

Commit Message

Jean-Philippe Brucker Feb. 24, 2020, 6:23 p.m. UTC 
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.

Cc: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
---
 include/linux/pci-ats.h | 8 ++++++++
 1 file changed, 8 insertions(+)
diff mbox series

Patch

diff --git a/include/linux/pci-ats.h b/include/linux/pci-ats.h
index f75c307f346d..e9e266df9b37 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