ttm_mem_reg_iounmap  448 drivers/gpu/drm/ttm/ttm_bo_util.c 	ttm_mem_reg_iounmap(bdev, old_mem, new_iomap);
ttm_mem_reg_iounmap  450 drivers/gpu/drm/ttm/ttm_bo_util.c 	ttm_mem_reg_iounmap(bdev, &old_copy, old_iomap);