[PATCH] iommu/vt-d: include conditionally on CONFIG_INTEL_IOMMU_SVM

[Lukas Bulwahn]

Commit 6ee1b77ba3ac ("iommu/vt-d: Add svm/sva invalidate function")
introduced intel_iommu_sva_invalidate() when CONFIG_INTEL_IOMMU_SVM.
This function uses the dedicated static variable inv_type_granu_table
and functions to_vtd_granularity() and to_vtd_size().

These parts are unused when !CONFIG_INTEL_IOMMU_SVM, and hence,
make CC=clang W=1 warns with an -Wunused-function warning.

Include these parts conditionally on CONFIG_INTEL_IOMMU_SVM.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@xxxxxxxxx>
---
applies cleanly on current master and next-20201113

Liu Yi L, Jakob Pan, Lu Baolu, please ack.

Joerg, please pick this minor non-urgent clean-up patch.

 drivers/iommu/intel/iommu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
index c6622011d493..7b32703c0b47 100644
--- a/drivers/iommu/intel/iommu.c
+++ b/drivers/iommu/intel/iommu.c
@@ -5386,6 +5386,7 @@ static void intel_iommu_aux_detach_device(struct iommu_domain *domain,
 	aux_domain_remove_dev(to_dmar_domain(domain), dev);
 }
 
+#ifdef CONFIG_INTEL_IOMMU_SVM
 /*
  * 2D array for converting and sanitizing IOMMU generic TLB granularity to
  * VT-d granularity. Invalidation is typically included in the unmap operation
@@ -5432,7 +5433,6 @@ static inline u64 to_vtd_size(u64 granu_size, u64 nr_granules)
 	return order_base_2(nr_pages);
 }
 
-#ifdef CONFIG_INTEL_IOMMU_SVM
 static int
 intel_iommu_sva_invalidate(struct iommu_domain *domain, struct device *dev,
 			   struct iommu_cache_invalidate_info *inv_info)
-- 
2.17.1