centos man page for snd_ac97_update_bits

SND_AC97_UPDATE_BITS(9) 					 Control/Mixer API					   SND_AC97_UPDATE_BITS(9)

NAME
       snd_ac97_update_bits - update the bits on the given register

SYNOPSIS
       int snd_ac97_update_bits(struct snd_ac97 * ac97, unsigned short reg, unsigned short mask, unsigned short value);

ARGUMENTS
       ac97
	   the ac97 instance

       reg
	   the register to change

       mask
	   the bit-mask to change

       value
	   the value to set

DESCRIPTION
       Updates the masked-bits on the given register only when the value is changed.

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

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						   SND_AC97_UPDATE_BITS(9)