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authorJoerg Roedel <jroedel@suse.de>2015-10-21 23:51:38 +0200
committerJoerg Roedel <jroedel@suse.de>2015-10-22 00:00:49 +0200
commit6eab556a40384de94c2d03c8d9d632e5154367f5 (patch)
treec1a50c01363688c5b974317e34f0f90baee7889d /drivers/iommu
parent5e62292bad10cff25ff75d136c54e62b43bfb0fa (diff)
downloadlinux-6eab556a40384de94c2d03c8d9d632e5154367f5.tar.bz2
iommu: Add generic_device_group() function
This function can be used as a device_group call-back and just allocates one iommu-group per device. Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/iommu.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index fdea700ca12c..a80c9c5c2650 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -728,6 +728,21 @@ static int get_pci_alias_or_group(struct pci_dev *pdev, u16 alias, void *opaque)
}
/*
+ * 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.
*/