diff options
| -rw-r--r-- | drivers/iommu/intel-iommu.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index ccf347f12c8..b9062c0d394 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -563,7 +563,9 @@ static void domain_update_iommu_coherency(struct dmar_domain *domain) { int i; - domain->iommu_coherency = 1; + i = find_first_bit(&domain->iommu_bmp, g_num_of_iommus); + + domain->iommu_coherency = i < g_num_of_iommus ? 1 : 0; for_each_set_bit(i, &domain->iommu_bmp, g_num_of_iommus) { if (!ecap_coherent(g_iommus[i]->ecap)) { |