From: Filippo Sironi <sironi@amazon.de> [ 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@amazon.de> 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@suse.de> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> --- 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 9774f53..cd61f53 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -2137,6 +2137,8 @@ static int attach_device(struct device *dev, */ domain_flush_tlb_pde(domain); + domain_flush_complete(domain); + return ret; } -- 1.8.3