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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>
This commit is contained in:
Joerg Roedel 2016-07-06 12:50:35 +02:00
parent c5b5da9c79
commit f1eae7c580
1 changed files with 1 additions and 1 deletions
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2
drivers/iommu/amd_iommu.c
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@ -1177,7 +1177,7 @@ static void domain_flush_complete(struct protection_domain *domain)
int i;
for (i = 0; i < amd_iommus_present; ++i) {
if (!domain->dev_iommu[i])
if (domain && !domain->dev_iommu[i])
continue;
/*