centos man page for cdev_add

CDEV_ADD(9)							   Char devices 						       CDEV_ADD(9)

NAME
       cdev_add - add a char device to the system

SYNOPSIS
       int cdev_add(struct cdev * p, dev_t dev, unsigned count);

ARGUMENTS
       p
	   the cdev structure for the device

       dev
	   the first device number for which this device is responsible

       count
	   the number of consecutive minor numbers corresponding to this device

DESCRIPTION
       cdev_add adds the device represented by p to the system, making it live immediately. A negative error code is returned on failure.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							       CDEV_ADD(9)