linux-kernel - Re: led and hid class - hid_device vs led

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Message-ID: <4910C32F.9060204@gmail.com>
Date:	Tue, 04 Nov 2008 22:48:31 +0100
From:	Jiri Slaby <jirislaby@...il.com>
To:	Adam Nielsen <a.nielsen@...kadi.net>
CC:	LKML Mailinglist <linux-kernel@...r.kernel.org>
Subject: Re: led and hid class - hid_device vs led_classdev

On 11/04/2008 08:51 AM, Adam Nielsen wrote:
> /* Callback function when user wants to change LED state */
> static void my_led_set(struct led_classdev *led_cdev,
>   enum led_brightness value)
> {
>   /* How do I get my_data back? */
> }
> 
> Hopefully this explains what I'm after - if you need me to clarify
> anything please let me know.

my_led should by part of my_data, then you do
my_data = container_of(led_cdev, /*typeof(my_data)*/, my_led);
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