[PATCH 12/19] iommu/vt-d: Enable Translation only if it was previously disabled

[Joerg Roedel]

From: Joerg Roedel <jroedel@xxxxxxx>

Do not touch the TE bit unless we know translation is
disabled.

Signed-off-by: Joerg Roedel <jroedel@xxxxxxx>
---
 drivers/iommu/intel-iommu.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index b47def6..ad72c6d 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -3184,7 +3184,9 @@ domains_done:
 		if (ret)
 			goto free_iommu;
 
-		iommu_enable_translation(iommu);
+		if (!translation_pre_enabled(iommu))
+			iommu_enable_translation(iommu);
+
 		iommu_disable_protect_mem_regions(iommu);
 	}
 
-- 
1.9.1

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