Re: [PATCH] input: xpad.c - Xbox 360 wireless and sysfs support

[Greg KH <greg@kroah.com>]

On Mon, Feb 16, 2009 at 09:53:54PM -0500, Mike Murphy wrote:
> struct usb_xpad {
> 	struct input_dev *dev;		/* input device interface */
> 	struct usb_device *udev;	/* usb device */
> ...
> };
> 
> This is not my code... it was set up this way in the stable xpad driver.

And it is correct :)

> So it looks like I'm stuck with a struct input_dev * pointer to the
> input device, a struct device * pointer in the show/store handlers,
> and no way to get back to struct usb_xpad * with the container_of
> macro. Unless, of course, there is something I don't know about
> container_of (or another macro I can use in this instance).

input_set_drvdata() and input_get_drvdata() is what you are looking for.

Hope this helps,

greg k-h