From: Filippo Sironi <sironi@xxxxxxxxx>
[ Upstream commit 0b15e02f0cc4fb34a9160de7ba6db3a4013dc1b7 ]
To make sure the domain tlb flush completes before the
function returns, explicitly wait for its completion.
Signed-off-by: Filippo Sironi <sironi@xxxxxxxxx>
Fixes: 42a49f965a8d ("amd-iommu: flush domain tlb when attaching a new device")
[joro: Added commit message and fixes tag]
Signed-off-by: Joerg Roedel <jroedel@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/iommu/amd_iommu.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 9991386fb700..bea19aa33758 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -2153,6 +2153,8 @@ static int attach_device(struct device *dev,
*/
domain_flush_tlb_pde(domain);
+ domain_flush_complete(domain);
+
return ret;
}
--
2.20.1
