linux-kernel - Re: [PATCH] Haptic class support (v2)

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Message-ID: <5d5443650910192344v5c396033g55ad8cd85370dbb4@mail.gmail.com>
Date:	Tue, 20 Oct 2009 12:14:46 +0530
From:	Trilok Soni <soni.trilok@...il.com>
To:	Kay Sievers <kay.sievers@...y.org>,
	Kyungmin Park <kmpark@...radead.org>
Cc:	linux-kernel@...r.kernel.org, linux-input@...r.kernel.org,
	Greg Kroah-Hartmann <greg@...ah.com>
Subject: Re: [PATCH] Haptic class support (v2)

Hi Kyungmin,

On Tue, Oct 13, 2009 at 10:15 PM, Kay Sievers <kay.sievers@...y.org> wrote:
> On Tue, Oct 6, 2009 at 09:45, Kyungmin Park <kmpark@...radead.org> wrote:
>
>> +/**
>> + * haptic_classdev_register - register a new object of haptic_classdev class.
>> + * @dev: The device to register.
>> + * @haptic_cdev: the haptic_classdev structure for this device.
>> + */
>> +int haptic_classdev_register(struct device *parent,
>> +                               struct haptic_classdev *haptic_cdev)
>> +{
>> +       int ret;
>> +
>> +       haptic_cdev->dev = device_create(haptic_class, parent, 0,
>> +                               haptic_cdev, "%s", haptic_cdev->name);
>> +       if (IS_ERR(haptic_cdev->dev))
>> +               return PTR_ERR(haptic_cdev->dev);
>> +
>> +       /* register the attributes */
>> +       ret = class_create_file(haptic_class, &class_attr_enable);
>> +       if (ret) {
>> +               printk(KERN_ERR "%s: class_create_file(enable) failed\n",
>> +                                __func__);
>> +               return ret;
>> +       }
>
> As mentioned in an earlier mail, this needs some explanation. What are
> you doing here? Creating a device below a class, and then add a bunch
> of attributes to the class itself, instead of the device you created?
>
> All calls to class_create_file() need to go, we can not allow any new
> users of this broken interface. As mentioned, if you need
> subsystem-wide attributes you need to use a bus and not a class,
> classes are flat and can not handle such things properly.
>
> Thanks,
> Kay
>

Any plan of refreshing these patches?


-- 
---Trilok Soni
http://triloksoni.wordpress.com
http://www.linkedin.com/in/triloksoni
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