From: Jiang Liu <jiang.liu@linux.intel.com>
Date: Mon, 6 Jan 2014 06:18:23 +0000 (+0800)
Subject: iommu/vt-d: release invalidation queue when destroying IOMMU unit
X-Git-Tag: next-20140116~40^2^3~4
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=a84da70b7ba0c5236fccf25115acefc235ed65f9;p=karo-tx-linux.git

iommu/vt-d: release invalidation queue when destroying IOMMU unit

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

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
---

diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c
index b0df78f9cd28..726cfe296d99 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);