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SubjectRe: [PATCH v6] mfd: MAX6650/6651 support
From
Hi Laszlo,

Sorry for missing out on a couple of points during my earlier review.
Please see inline.

On 12 February 2014 09:32, Laszlo Papp <lpapp@kde.org> wrote:
> MAX6650/MAX6651 chip is a multi-function device with I2C busses. The
> chip includes fan-speed regulators and monitors, GPIO, and alarm.
>
> This patch is an initial release of a MAX6650/6651 MFD driver that
> supports to enable the chip with its primary I2C bus that will connect
> the hwmon, and then the gpio devices for now.
>
> Signed-off-by: Laszlo Papp <lpapp@kde.org>
> ---
[snip]

> --- /dev/null
> +++ b/drivers/mfd/max665x.c
> @@ -0,0 +1,87 @@
> +/*
> + * Device access for MAX6650-MAX6651
> + *
> + * Copyright(c) 2013 Polatis Ltd.
> + *
> + * Author: Laszlo Papp <laszlo.papp@polatis.com>
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms of the GNU General Public License as published by the
> + * Free Software Foundation; either version 2 of the License, or (at your
> + * option) any later version.
> + */
> +
> +#include <linux/device.h>
> +#include <linux/mfd/core.h>
> +#include <linux/module.h>
> +#include <linux/i2c.h>
> +
> +#include <linux/mfd/max665x-private.h>
> +
> +static struct mfd_cell max665x_devs[] = {
> + { .name = "max6651-gpio", },
> + { .name = "max6650", }, /* hwmon driver */
> + {},
> +};
> +
> +const struct regmap_config max665x_regmap_config = {
> + .reg_bits = 5,
> +};

This should be static.

> +static int max665x_probe(struct i2c_client *i2c,
> + const struct i2c_device_id *id)
> +{
> + struct max665x_dev *max665x;
> + int ret;
> +
> + max665x = devm_kzalloc(&i2c->dev, sizeof(*max665x), GFP_KERNEL);
> + if (!max665x)
> + return -ENOMEM;
> +
> + i2c_set_clientdata(i2c, max665x);
> + max665x->dev = &i2c->dev;
> + max665x->i2c = i2c;
> + max665x->map = devm_regmap_init_i2c(i2c, &max665x_regmap_config);

Don't you need to check the return value of devm_regmap_init_i2c?

--
With warm regards,
Sachin


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