linux-kernel - Re: [PATCH 2/4] i2c: Add Congatec CGEB I2C driver

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Date:	Fri, 12 Jun 2015 20:05:38 +0900
From:	Wolfram Sang <wsa@...-dreams.de>
To:	Christian Gmeiner <christian.gmeiner@...il.com>
Cc:	linux-kernel@...r.kernel.org, sameo@...ux.intel.com,
	lee.jones@...aro.org, jdelvare@...e.de, linux-i2c@...r.kernel.org,
	wim@...ana.be, linux-watchdog@...r.kernel.org,
	jingoohan1@...il.com, Sascha Hauer <s.hauer@...gutronix.de>
Subject: Re: [PATCH 2/4] i2c: Add Congatec CGEB I2C driver


Oh, this one again. Like last time, close to be ready.

> +#include <linux/module.h>
> +#include <linux/platform_device.h>
> +#include <linux/slab.h>
> +#include <linux/i2c.h>
> +#include <linux/mfd/congatec-cgeb.h>

Please sort the includes.

> +struct cgeb_i2c_priv {
> +	struct cgeb_board_data          *board;
> +	struct i2c_adapter      adapter;
> +	int unit;
> +};

Only a single space for indentation

> +	ret = cgeb_i2c_set_speed(priv, 400000);

Not all slaves handle 400kHz. So, this might be a bit demanding. Then
again, it is probably fix which slaves are connected and they work
currently?

> +		/*
> +		 * not a critical error, we can continue with the default speed.
> +		 */

Single line comment, even if it is a little over 80 chars

> +	platform_set_drvdata(pdev, NULL);

Not needed.

> +
> +static struct platform_driver cgeb_i2c_driver = {
> +	.probe          = cgeb_i2c_probe,
> +	.remove         = __exit_p(cgeb_i2c_remove),

Leftover annotation?

> +	.driver = {
> +		.name   = "cgeb-i2c",
> +		.owner  = THIS_MODULE,

Owner not needed

> +	},
> +};
> +
> +static int __init cgeb_i2c_driver_init(void)
> +{
> +	return platform_driver_register(&cgeb_i2c_driver);
> +}
> +
> +static void __exit cgeb_i2c_driver_exit(void)
> +{
> +	platform_driver_unregister(&cgeb_i2c_driver);
> +}
> +
> +module_init(cgeb_i2c_driver_init);
> +module_exit(cgeb_i2c_driver_exit);

module_platform_driver?

> +
> +MODULE_AUTHOR("Sascha Hauer <s.hauer@...gutronix.de>");
> +MODULE_DESCRIPTION("cgeb i2c driver");
> +MODULE_LICENSE("GPL");

GPL v2


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