centos man page for snd_ac97_update

SND_AC97_UPDATE(9)						 Control/Mixer API						SND_AC97_UPDATE(9)

NAME
       snd_ac97_update - update the value on the given register

SYNOPSIS
       int snd_ac97_update(struct snd_ac97 * ac97, unsigned short reg, unsigned short value);

ARGUMENTS
       ac97
	   the ac97 instance

       reg
	   the register to change

       value
	   the value to set

DESCRIPTION
       Compares the value with the register cache and updates the value only when the value is changed.

RETURN
       1 if the value is changed, 0 if no change, or a negative code on failure.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							SND_AC97_UPDATE(9)