Joerg Roedel f1eae7c580 iommu/amd: Allow NULL pointer parameter for domain_flush_complete()
If domain == NULL is passed to the function, it will queue a
completion-wait command on all IOMMUs in the system.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-07-13 12:48:35 +02:00
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