centos man page for snd_ctl_add

SND_CTL_ADD(9)							 Control/Mixer API						    SND_CTL_ADD(9)

NAME
       snd_ctl_add - add the control instance to the card

SYNOPSIS
       int snd_ctl_add(struct snd_card * card, struct snd_kcontrol * kcontrol);

ARGUMENTS
       card
	   the card instance

       kcontrol
	   the control instance to add

DESCRIPTION
       Adds the control instance created via snd_ctl_new or snd_ctl_new1 to the given card. Assigns also an unique numid used for fast search.

       It frees automatically the control which cannot be added.

RETURN
       Zero if successful, or a negative error code on failure.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							    SND_CTL_ADD(9)