229 	int ret;  in usb_dfu_download()  local
243 		ret = hdfu->callback->download(hdfu->alt_setting, &data_ptr,  in usb_dfu_download()
245 		if (ret == 0U) {  in usb_dfu_download()
262 		ret = hdfu->callback->manifestation(hdfu->alt_setting, pdev->user_data);  in usb_dfu_download()
263 		if (ret == 0U) {  in usb_dfu_download()
282 	int ret;  in usb_dfu_upload()  local
301 	ret = hdfu->callback->upload(hdfu->alt_setting, &data_ptr, &length, pdev->user_data);  in usb_dfu_upload()
302 	if (ret == 0U) {  in usb_dfu_upload()
416 	uint8_t ret = USBD_OK;  in usb_dfu_setup()  local
454 			ret = USBD_FAIL;  in usb_dfu_setup()
485 			ret = USBD_FAIL;  in usb_dfu_setup()
492 	return ret;  in usb_dfu_setup()
519 	enum usb_status ret;  in usb_dfu_loop()  local
527 		ret = usb_core_handle_it(pdev);  in usb_dfu_loop()
528 		if (ret != USBD_OK) {  in usb_dfu_loop()