__REGISTER_CHRDEV(9)                       Char devices                      __REGISTER_CHRDEV(9)



NAME
       __register_chrdev - create and register a cdev occupying a range of minors

SYNOPSIS
       int __register_chrdev(unsigned int major, unsigned int baseminor, unsigned int count,
                             const char * name, const struct file_operations * fops);

ARGUMENTS
       major
           major device number or 0 for dynamic allocation

       baseminor
           first of the requested range of minor numbers

       count
           the number of minor numbers required

       name
           name of this range of devices

       fops
           file operations associated with this devices

DESCRIPTION
       If major == 0 this functions will dynamically allocate a major and return its number.

       If major > 0 this function will attempt to reserve a device with the given major number
       and will return zero on success.

       Returns a -ve errno on failure.

       The name of this device has nothing to do with the name of the device in /dev. It only
       helps to keep track of the different owners of devices. If your module name has only one
       type of devices it's ok to use e.g. the name of the module here.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                      __REGISTER_CHRDEV(9)