'\" t
.\"     Title: snd_ac97_update_bits
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Control/Mixer API
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "SND_AC97_UPDATE_BITS" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Control/Mixer API"
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.SH "NAME"
snd_ac97_update_bits \- update the bits on the given register
.SH "SYNOPSIS"
.HP \w'int\ snd_ac97_update_bits('u
.BI "int snd_ac97_update_bits(struct\ snd_ac97\ *\ " "ac97" ", unsigned\ short\ " "reg" ", unsigned\ short\ " "mask" ", unsigned\ short\ " "value" ");"
.SH "ARGUMENTS"
.PP
\fIac97\fR
.RS 4
the ac97 instance
.RE
.PP
\fIreg\fR
.RS 4
the register to change
.RE
.PP
\fImask\fR
.RS 4
the bit\-mask to change
.RE
.PP
\fIvalue\fR
.RS 4
the value to set
.RE
.SH "DESCRIPTION"
.PP
Updates the masked\-bits on the given register only when the value is changed\&.
.SH "RETURN"
.PP
1 if the bits are changed, 0 if no change, or a negative code on failure\&.
.SH "COPYRIGHT"
.br