On Mon, Dec 10, 2018 at 5:25 AM Anson Huang <anson.huang@xxxxxxx> wrote:
> @@ -1533,6 +1536,27 @@ static int mma8452_probe(struct i2c_client *client,
> data->client = client;
> mutex_init(&data->lock);
> data->chip_info = match->data;
> + data->vdd_reg = devm_regulator_get_optional(&client->dev, "vdd");
> + if (!IS_ERR(data->vdd_reg)) {
> + ret = regulator_enable(data->vdd_reg);
> + if (ret) {
> + dev_err(&client->dev, "failed to enable VDD regulator\n");
> + return ret;
> + }
> + } else if (data->vdd_reg == ERR_PTR(-EPROBE_DEFER)) {
> + return -EPROBE_DEFER;
> + }
> +
> + data->vddio_reg = devm_regulator_get_optional(&client->dev, "vddio");
> + if (!IS_ERR(data->vddio_reg)) {
> + ret = regulator_enable(data->vddio_reg);
> + if (ret) {
> + dev_err(&client->dev, "failed to enable VDDIO regulator\n");
> + return ret;
As mentioned in your other patch: you should disable the previously
enabled regulator in the error path.
