[PATCH 3.16 113/204] iommu/amd: Finish TLB flush in amd_iommu_unmap()

[Ben Hutchings]

3.16.52-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Joerg Roedel <jroe...@suse.de>

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 <jroe...@suse.de>
Signed-off-by: Ben Hutchings <b...@decadent.org.uk>
---
 drivers/iommu/amd_iommu.c | 1 +
 1 file changed, 1 insertion(+)

--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -3440,6 +3440,7 @@ static size_t amd_iommu_unmap(struct iom
        mutex_unlock(&domain->api_lock);
 
        domain_flush_tlb_pde(domain);
+       domain_flush_complete(domain);
 
        return unmap_size;
 }