iommu: Add generic_device_group() function (6eab556a) · Commits · 戴 / test

drivers/iommu/iommu.c

+15 −0

Original line number	Diff line number	Diff line
		@@ -727,6 +727,21 @@ static int get_pci_alias_or_group(struct pci_dev pdev, u16 alias, void opaque)
		return data->group != NULL;
		}

		/*
		* Generic device_group call-back function. It just allocates one
		* iommu-group per device.
		*/
		struct iommu_group generic_device_group(struct device dev)
		{
		struct iommu_group *group;

		group = iommu_group_alloc();
		if (IS_ERR(group))
		return NULL;

		return group;
		}

		/*
		* Use standard PCI bus topology, isolation features, and DMA alias quirks
		* to find or create an IOMMU group for a device.

+2 −0

Original line number	Diff line number	Diff line
		@@ -319,6 +319,8 @@ static inline size_t iommu_map_sg(struct iommu_domain *domain,

		/* PCI device grouping function */
		extern struct iommu_group pci_device_group(struct device dev);
		/* Generic device grouping function */
		extern struct iommu_group generic_device_group(struct device dev);

		#else /* CONFIG_IOMMU_API */