From f1eae7c58036b30d434d84a34c6c3154bfb5b496 Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Wed, 6 Jul 2016 12:50:35 +0200 Subject: [PATCH] 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 --- drivers/iommu/amd_iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 38f8a5e461fc..0884b126d932 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -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; /*