m4u_group 540 drivers/iommu/mtk_iommu.c if (!data->m4u_group) { m4u_group 541 drivers/iommu/mtk_iommu.c data->m4u_group = iommu_group_alloc(); m4u_group 542 drivers/iommu/mtk_iommu.c if (IS_ERR(data->m4u_group)) m4u_group 545 drivers/iommu/mtk_iommu.c iommu_group_ref_get(data->m4u_group); m4u_group 547 drivers/iommu/mtk_iommu.c return data->m4u_group; m4u_group 58 drivers/iommu/mtk_iommu.h struct iommu_group *m4u_group;