iommu/vt-d: Restore IOMMU_CAP_CACHE_COHERENCY

In removing IOMMU_CAP_DEFERRED_FLUSH, the below referenced commit
was over-eager in removing the return, resulting in the test for
IOMMU_CAP_CACHE_COHERENCY falling through to an irrelevant option.

Restore dropped return.

Fixes: 1c18a1212c77 ("iommu/dma: Always allow DMA-FQ when iommupt provides the iommu_domain")
Signed-off-by: Alex Williamson <alex.williamson@nvidia.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Will Deacon <will@kernel.org>

diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
index 80b183e207e59b400e97768ba01c613fccd6b9cd..6418f7cb865c65df1b1758c5ff72ff968a159aab 100644 (file)
--- a/drivers/iommu/intel/iommu.c
+++ b/drivers/iommu/intel/iommu.c
@@ -3212,6 +3212,7 @@ static bool intel_iommu_capable(struct device *dev, enum iommu_cap cap)
 
        switch (cap) {
        case IOMMU_CAP_CACHE_COHERENCY:
+               return true;
        case IOMMU_CAP_PRE_BOOT_PROTECTION:
                return dmar_platform_optin();
        case IOMMU_CAP_ENFORCE_CACHE_COHERENCY: