Re: [PATCH v3 12/13] PCI/ATS: Add PASID stubs
From: Bjorn Helgaas <helgaas@kernel.org>
Date: 2019-12-10 21:52:30
Also in:
linux-acpi, linux-devicetree, linux-iommu, linux-pci
On Mon, Dec 09, 2019 at 07:05:13PM +0100, Jean-Philippe Brucker wrote:
The SMMUv3 driver, which may be built without CONFIG_PCI, will soon gain
PASID support. Partially revert commit c6e9aefbf9db ("PCI/ATS: Remove
unused PRI and PASID stubs") to re-introduce the PASID stubs, and avoid
adding more #ifdefs to the SMMU driver.
Signed-off-by: Jean-Philippe Brucker <redacted>Acked-by: Bjorn Helgaas <bhelgaas@google.com>
quoted hunk ↗ jump to hunk
--- include/linux/pci-ats.h | 3 +++ 1 file changed, 3 insertions(+)diff --git a/include/linux/pci-ats.h b/include/linux/pci-ats.h index 5d62e78946a3..d08f0869f121 100644 --- a/include/linux/pci-ats.h +++ b/include/linux/pci-ats.h@@ -33,6 +33,9 @@ void pci_disable_pasid(struct pci_dev *pdev); int pci_pasid_features(struct pci_dev *pdev); int pci_max_pasids(struct pci_dev *pdev); #else /* CONFIG_PCI_PASID */ +static inline int pci_enable_pasid(struct pci_dev *pdev, int features) +{ return -EINVAL; } +static inline void pci_disable_pasid(struct pci_dev *pdev) { } static inline int pci_pasid_features(struct pci_dev *pdev) { return -EINVAL; } static inline int pci_max_pasids(struct pci_dev *pdev)-- 2.24.0
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