20 	struct regulator *vbackup;  member
90 	data->vbackup = devm_regulator_get_optional(&serdev->dev, "vbackup");  in mtk_probe()
91 	if (IS_ERR(data->vbackup)) {  in mtk_probe()
92 		ret = PTR_ERR(data->vbackup);  in mtk_probe()
94 			data->vbackup = NULL;  in mtk_probe()
99 	if (data->vbackup) {  in mtk_probe()
100 		ret = regulator_enable(data->vbackup);  in mtk_probe()
112 	if (data->vbackup)  in mtk_probe()
113 		regulator_disable(data->vbackup);  in mtk_probe()
126 	if (data->vbackup)  in mtk_remove()
127 		regulator_disable(data->vbackup);  in mtk_remove()