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)
