arm_iommu_release_mapping 2161 arch/arm/mm/dma-mapping.c void arm_iommu_release_mapping(struct dma_iommu_mapping *mapping) arm_iommu_release_mapping 22 drivers/gpu/drm/exynos/exynos_drm_dma.c #define arm_iommu_release_mapping(...) ({ }) arm_iommu_release_mapping 35 drivers/iommu/ipmmu-vmsa.c #define arm_iommu_release_mapping(...) do {} while (0)