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 --- 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 0ad8b7c78a43..66a406e87e11 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -2184,6 +2184,8 @@ static int attach_device(struct device *dev, */ domain_flush_tlb_pde(domain);
+ domain_flush_complete(domain); + return ret; }