[Patch Part1 V3 16/20] iommu/vt-d: release invalidation queue when destroying IOMMU unit

[Jiang Liu]

Release associated invalidation queue when destroying IOMMU unit
to avoid memory leak.

Signed-off-by: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx>
---
 drivers/iommu/dmar.c |    6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c
index 302e037..bb635fb 100644
--- a/drivers/iommu/dmar.c
+++ b/drivers/iommu/dmar.c
@@ -737,6 +737,12 @@ static void free_iommu(struct intel_iommu *iommu)
 		destroy_irq(iommu->irq);
 	}
 
+	if (iommu->qi) {
+		free_page((unsigned long)iommu->qi->desc);
+		kfree(iommu->qi->desc_status);
+		kfree(iommu->qi);
+	}
+
 	if (iommu->reg)
 		unmap_iommu(iommu);
 
-- 
1.7.10.4

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