linux-kernel - Re: [PATCH 2/2] hwmon: max31827: add MAX31827 driver

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Date:   Thu, 6 Apr 2023 21:20:53 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Daniel Matyas <daniel.matyas@...log.com>
Cc:     Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Mark Brown <broonie@...nel.org>, Marek Vasut <marex@...x.de>,
        Vincent Tremblay <vincent@...emblay.dev>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        "Greg.Schwendimann@...ineon.com" <Greg.Schwendimann@...ineon.com>,
        Pali Rohár <pali@...nel.org>,
        Conor Dooley <conor.dooley@...rochip.com>,
        linux-hwmon@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] hwmon: max31827: add MAX31827 driver

On 06/04/2023 18:43, Daniel Matyas wrote:
> MAX31827 is a low-power temperature switch with I2C interface.
> 

(...)

> +
> +static const struct hwmon_ops max31827_hwmon_ops = {
> +	.is_visible = max31827_is_visible,
> +	.read = max31827_read,
> +	.write = max31827_write,
> +};
> +
> +static const struct hwmon_chip_info max31827_chip_info = {
> +	.ops = &max31827_hwmon_ops,
> +	.info = max31827_info,
> +};
> +
> +static int max31827_probe(struct i2c_client *client)
> +{
> +	struct device *dev = &client->dev;
> +	struct device *hwmon_dev;
> +	struct max31827_state *st;
> +	int ret;
> +
> +	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WORD_DATA))
> +		return -EOPNOTSUPP;
> +
> +	st = devm_kzalloc(dev, sizeof(struct max31827_state), GFP_KERNEL);

sizeof(*...)

> +	if (!st)
> +		return -ENOMEM;
> +


Best regards,
Krzysztof