CDEV_ADD(9) Char devices CDEV_ADD(9)NAMEcdev_add - add a char device to the system
int cdev_add(struct cdev * p, dev_t dev, unsigned count);
the cdev structure for the device
the first device number for which this device is responsible
the number of consecutive minor numbers corresponding to this
DESCRIPTIONcdev_add adds the device represented by p to the system, making it live
immediately. A negative error code is returned on failure.
COPYRIGHTKernel Hackers Manual 2.6. November 2013 CDEV_ADD(9)