IOMMU core doesn't detach device from the default domain before calling
->iommu_remove_device, so check that and do the proper cleanup or
warn if device is still attached to non-default domain.
Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
---
drivers/iommu/exynos-iommu.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index 8bf5a06a6c01..37d9738bd023 100644
--- a/drivers/iommu/exynos-iommu.c
+++ b/drivers/iommu/exynos-iommu.c
@@ -1242,9 +1242,21 @@ static int exynos_iommu_add_device(struct device *dev)
static void exynos_iommu_remove_device(struct device *dev)
{
+ struct exynos_iommu_owner *owner = dev->archdata.iommu;
+
if (!has_sysmmu(dev))
return;
+ if (owner->domain) {
+ struct iommu_group *group = iommu_group_get(dev);
+
+ if (group) {
+ WARN_ON(owner->domain !=
+ iommu_group_default_domain(group));
+ exynos_iommu_detach_device(owner->domain, dev);
+ iommu_group_put(group);
+ }
+ }
iommu_group_remove_device(dev);
}
--
1.9.1
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