iommu/amd: Finish TLB flush in amd_iommu_unmap()

commit ce76353f169a6471542d999baf3d29b121dce9c0 upstream.

The function only sends the flush command to the IOMMU(s),
but does not wait for its completion when it returns. Fix
that.

Fixes: 601367d76bd1 ('x86/amd-iommu: Remove iommu_flush_domain function')
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index a803690..94e8fc4 100644 (file)
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -2772,6 +2772,7 @@ static int amd_iommu_unmap(struct iommu_domain *dom, unsigned long iova,
        mutex_unlock(&domain->api_lock);
 
        domain_flush_tlb_pde(domain);
+       domain_flush_complete(domain);
 
        return get_order(unmap_size);
 }