171 	struct device *dma_dev;  in mtk_drm_kms_init()  local
237 	dma_dev = &pdev->dev;  in mtk_drm_kms_init()
238 	private->dma_dev = dma_dev;  in mtk_drm_kms_init()
244 	if (!dma_dev->dma_parms) {  in mtk_drm_kms_init()
246 		dma_dev->dma_parms =  in mtk_drm_kms_init()
247 			devm_kzalloc(drm->dev, sizeof(*dma_dev->dma_parms),  in mtk_drm_kms_init()
250 	if (!dma_dev->dma_parms) {  in mtk_drm_kms_init()
255 	ret = dma_set_max_seg_size(dma_dev, (unsigned int)DMA_BIT_MASK(32));  in mtk_drm_kms_init()
257 		dev_err(dma_dev, "Failed to set DMA segment size\n");  in mtk_drm_kms_init()
278 		dma_dev->dma_parms = NULL;  in mtk_drm_kms_init()
280 	put_device(private->dma_dev);  in mtk_drm_kms_init()
296 		private->dma_dev->dma_parms = NULL;  in mtk_drm_kms_deinit()
321 	return drm_gem_prime_import_dev(dev, dma_buf, private->dma_dev);  in mtk_drm_gem_prime_import()