centos man page for register_sound_mixer

REGISTER_SOUND_MIXER(9) 					   Sound Devices					   REGISTER_SOUND_MIXER(9)

NAME
       register_sound_mixer - register a mixer device

SYNOPSIS
       int register_sound_mixer(const struct file_operations * fops, int dev);

ARGUMENTS
       fops
	   File operations for the driver

       dev
	   Unit number to allocate

DESCRIPTION
       Allocate a mixer device. Unit is the number of the mixer requested. Pass -1 to request the next free mixer unit.

RETURN
       On success, the allocated number is returned. On failure, a negative error code is returned.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						   REGISTER_SOUND_MIXER(9)