[PATCH 3/4] iio: light: gp2ap020a00f: Enable the core and I/O supplies

[Linus Walleij <linusw@kernel.org>]

Enable the optional vdd and vio supplies before accessing the device.
Use managed helpers so both supplies are disabled on probe failure and
removal. Continue probing when an optional supply is absent, while
propagating other errors, including deferred probe.

Signed-off-by: Linus Walleij <linusw@kernel.org>
---
 drivers/iio/light/gp2ap020a00f.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/iio/light/gp2ap020a00f.c b/drivers/iio/light/gp2ap020a00f.c
index b435dc5e8706..62c4beb20cce 100644
--- a/drivers/iio/light/gp2ap020a00f.c
+++ b/drivers/iio/light/gp2ap020a00f.c
@@ -1414,6 +1414,14 @@ static int gp2ap020a00f_probe(struct i2c_client *client)
 
 	data = iio_priv(indio_dev);
 
+	err = devm_regulator_get_enable_optional(dev, "vdd");
+	if (err && err != -ENODEV)
+		return dev_err_probe(dev, err, "Failed to enable core supply\n");
+
+	err = devm_regulator_get_enable_optional(dev, "vio");
+	if (err && err != -ENODEV)
+		return dev_err_probe(dev, err, "Failed to enable I/O supply\n");
+
 	data->vled_reg = devm_regulator_get(dev, "vled");
 	if (IS_ERR(data->vled_reg))
 		return PTR_ERR(data->vled_reg);

-- 
2.56.0