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-rw-r--r--drivers/iommu/iommu.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 3f6ea160afed..86581b115b92 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -1283,6 +1283,10 @@ static int __iommu_attach_device(struct iommu_domain *domain,
struct device *dev)
{
int ret;
+ if ((domain->ops->is_attach_deferred != NULL) &&
+ domain->ops->is_attach_deferred(domain, dev))
+ return 0;
+
if (unlikely(domain->ops->attach_dev == NULL))
return -ENODEV;
@@ -1324,6 +1328,10 @@ EXPORT_SYMBOL_GPL(iommu_attach_device);
static void __iommu_detach_device(struct iommu_domain *domain,
struct device *dev)
{
+ if ((domain->ops->is_attach_deferred != NULL) &&
+ domain->ops->is_attach_deferred(domain, dev))
+ return;
+
if (unlikely(domain->ops->detach_dev == NULL))
return;