Re: [PATCH] proximity: vl53l0x: Make VDD regulator actually optional

[Jonathan Cameron <jic23@kernel.org>]

On Tue, 14 Jun 2022 13:20:50 +0200
Luca Weiss <luca.weiss@fairphone.com> wrote:

> Contrary to what the naming might suggest, devm_regulator_get_optional
> returns -ENODEV in case the regulator is not found which will trigger
> probe error in this driver.
> 
> Use devm_regulator_get instead which will return a dummy regulator that
> we can just use as if it was a proper regulator.
> 
> Fixes: d3d6dba56dab ("proximity: vl53l0x: Handle the VDD regulator")
> Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
> ---
> @Jonathan: As discussed in the other email, maybe you want to
> adjust/remove the "Fixes:" tag. Your call.
Applied to the togreg branch of iio.git.

> 
>  drivers/iio/proximity/vl53l0x-i2c.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/iio/proximity/vl53l0x-i2c.c b/drivers/iio/proximity/vl53l0x-i2c.c
> index 3b7a33ff601d..c7c4d33d340f 100644
> --- a/drivers/iio/proximity/vl53l0x-i2c.c
> +++ b/drivers/iio/proximity/vl53l0x-i2c.c
> @@ -237,7 +237,7 @@ static int vl53l0x_probe(struct i2c_client *client)
>  				     I2C_FUNC_SMBUS_BYTE_DATA))
>  		return -EOPNOTSUPP;
>  
> -	data->vdd_supply = devm_regulator_get_optional(&client->dev, "vdd");
> +	data->vdd_supply = devm_regulator_get(&client->dev, "vdd");
>  	if (IS_ERR(data->vdd_supply))
>  		return dev_err_probe(&client->dev, PTR_ERR(data->vdd_supply),
>  				     "Unable to get VDD regulator\n");