> From: Nicolin Chen <nicolinc@xxxxxxxxxx> > Sent: Saturday, October 26, 2024 7:50 AM > > For an iommu_dev that can unplug (so far only this selftest does so), the > viommu->iommu_dev pointer has no guarantee of its life cycle after it is > copied from the idev->dev->iommu->iommu_dev. > > Track the user count of the iommu_dev. Postpone the exit routine using a > completion, if refcount is unbalanced. The refcount inc/dec will be added > in the following patch. > > Signed-off-by: Nicolin Chen <nicolinc@xxxxxxxxxx> Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>
