question about misc char devices, and relationship with udev

[onlyfever]

>  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().