Re: devfs_mk_cdev question

[Greg KH <greg@kroah.com>]

On Tue, Dec 07, 2004 at 03:16:48PM +0100, Paul Akkermans wrote:
> Hi group,
> 
> Can anybody tell me what happens in this piece of code:
> 
> mousedev_table[minor] = mousedev;
> 
>  devfs_mk_cdev(MKDEV(INPUT_MAJOR, MOUSEDEV_MINOR_BASE + minor),
>    S_IFCHR|S_IRUGO|S_IWUSR, "input/mouse%d", minor);
>  class_simple_device_add(input_class,
>     MKDEV(INPUT_MAJOR, MOUSEDEV_MINOR_BASE + minor),
>     dev->dev, "mouse%d", minor);
> 
> I am especially interested in devfs_mk_cdev and what is means.
> 
> Can anybody help me?

It creates a devfs char device, if devfs is enabled in the kernel.

Personally I find the class_simple_device_add() stuff more interesting
:)

Hope this helps,

greg k-h