snd_ctl_free_one(9) centos man page | unix.com

SND_CTL_FREE_ONE(9)						 Control/Mixer API					       SND_CTL_FREE_ONE(9)

NAME
       snd_ctl_free_one - release the control instance

SYNOPSIS
       void snd_ctl_free_one(struct snd_kcontrol * kcontrol);

ARGUMENTS
       kcontrol
	   the control instance

DESCRIPTION
       Releases the control instance created via snd_ctl_new or snd_ctl_new1. Don't call this after the control was added to the card.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						       SND_CTL_FREE_ONE(9)