unregister_chrdev_region(9) [centos man page]

UNREGISTER_CHRDEV_RE(9) 					   Char devices 					   UNREGISTER_CHRDEV_RE(9)

NAME

       unregister_chrdev_region - return a range of device numbers

SYNOPSIS

       void unregister_chrdev_region(dev_t from, unsigned count);

ARGUMENTS

       from
	   the first in the range of numbers to unregister

       count
	   the number of device numbers to unregister

DESCRIPTION

       This function will unregister a range of count device numbers, starting with from. The caller should normally be the one who allocated
       those numbers in the first place...

COPYRIGHT

Kernel Hackers Manual 3.10					     June 2014						   UNREGISTER_CHRDEV_RE(9)

makedevice(9F)                                             Kernel Functions for Drivers                                             makedevice(9F)

NAME

       makedevice - make device number from major and minor numbers

SYNOPSIS

       #include <sys/types.h>
       #include <sys/mkdev.h>
       #include <sys/ddi.h>

       dev_t makedevice(major_t majnum, minor_t minnum);

INTERFACE LEVEL

       Architecture independent level 1 (DDI/DKI).

PARAMETERS

       majnum          Major device number.

       minnum          Minor device number.

DESCRIPTION

       makedevice()  creates  a  device number from a major and minor device number.   makedevice() should be used to create device numbers so the
       driver will port easily to releases that treat device numbers differently.

RETURN VALUES

       The device number, containing both the major number and the minor number, is returned. No validation of the major or minor numbers is  per-
       formed.

CONTEXT

       makedevice() can be called from user or interrupt context.

SEE ALSO

       getmajor(9F), getminor(9F)

SunOS 5.10                                                          11 Apr 1991                                                     makedevice(9F)