linux-kernel - Re: [PATCH v3] drivers: hwmon: max31827: handle vref regulator

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Message-ID: <9dbb6d44-d588-4813-aaf6-7c836bcc91ae@roeck-us.net>
Date:   Mon, 25 Sep 2023 05:14:42 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Antoniu Miclaus <antoniu.miclaus@...log.com>
Cc:     Daniel Matyas <daniel.matyas@...log.com>,
        Jean Delvare <jdelvare@...e.com>, linux-hwmon@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] drivers: hwmon: max31827: handle vref regulator

On Mon, Sep 25, 2023 at 11:23:33AM +0300, Antoniu Miclaus wrote:
> Add missing implementation for the max31827 supply regulator.
> This is a hardware required property that is not handled.
> 
> Signed-off-by: Antoniu Miclaus <antoniu.miclaus@...log.com>
> ---
> changes in v3:
>  - revert also the dev_err_probe output to use "vref" instead of "vdd".
>  drivers/hwmon/max31827.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/hwmon/max31827.c b/drivers/hwmon/max31827.c
> index 602f4e4f81ff..2a61fb9a408a 100644
> --- a/drivers/hwmon/max31827.c
> +++ b/drivers/hwmon/max31827.c
> @@ -427,6 +427,11 @@ static int max31827_probe(struct i2c_client *client)
>  		return dev_err_probe(dev, PTR_ERR(st->regmap),
>  				     "Failed to allocate regmap.\n");
>  
> +	err = devm_regulator_get_enable(dev, "vref");
> +	if (err)
> +		return dev_err_probe(dev, err,
> +				     "failed to enable vref regulator\n");

Please drop the "vref". "failed to enable regulator" is sufficient.

Guenter

> +
>  	err = max31827_init_client(st);
>  	if (err)
>  		return err;
> -- 
> 2.42.0
>