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iommu/amd: Finish TLB flush in amd_iommu_unmap()

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

Fixes: 601367d76b ('x86/amd-iommu: Remove iommu_flush_domain function')
Cc: stable@vger.kernel.org # >= 2.6.33
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Joerg Roedel 2017-10-13 14:32:37 +02:00
parent 9d25e3cc83
commit ce76353f16
1 changed files with 1 additions and 0 deletions
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drivers/iommu/amd_iommu.c
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@ -3048,6 +3048,7 @@ static size_t 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 unmap_size;
}