From mboxrd@z Thu Jan  1 00:00:00 1970
From: onlyfever@gmail.com (onlyfever)
Date: Thu, 5 May 2011 22:43:49 +0800
Subject: question about misc char devices, and relationship with udev
In-Reply-To: <alpine.DEB.2.00.1104230935370.10665@localhost6.localdomain6>
References: <alpine.DEB.2.00.1104230935370.10665@localhost6.localdomain6>
Message-ID: <BANLkTinad6axAVd6ti12G6drkGSQGRozXg@mail.gmail.com>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org

> ?also, the ELDD book claims that misc_register() calls the kernel
> routine class_device_create(). ?i'm looking at the entire
> kernel implementation for misc drivers in drivers/char/misc.c, and
> what i see is a call to device_create() instead. ?i suspect i should
> start following the flow of control here, but i'm still curious as to
> how that /dev file came into existence without any obvious help
> from udev.

In linux 2.6.20,kernel still use class_device_create().
After linux 2.6.22(maybe,I can't remember),kernel use device_create()
instead of class_device_create().