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Upgrade to 4.4.50-rt62
[kvmfornfv.git]
/
kernel
/
drivers
/
iommu
/
iommu.c
diff --git
a/kernel/drivers/iommu/iommu.c
b/kernel/drivers/iommu/iommu.c
index
0e3b009
..
515bb8b
100644
(file)
--- a/
kernel/drivers/iommu/iommu.c
+++ b/
kernel/drivers/iommu/iommu.c
@@
-848,7
+848,8
@@
struct iommu_group *iommu_group_get_for_dev(struct device *dev)
if (!group->default_domain) {
group->default_domain = __iommu_domain_alloc(dev->bus,
IOMMU_DOMAIN_DMA);
if (!group->default_domain) {
group->default_domain = __iommu_domain_alloc(dev->bus,
IOMMU_DOMAIN_DMA);
- group->domain = group->default_domain;
+ if (!group->domain)
+ group->domain = group->default_domain;
}
ret = iommu_group_add_device(group, dev);
}
ret = iommu_group_add_device(group, dev);