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.TH "SND_AC97_UPDATE_BITS" "" "06 October 2005" "" ""

.SH NAME
snd_ac97_update_bits \- update the bits on the given register
.SH SYNOPSIS
"SYNOPSIS"
.sp
\fB
.sp
int snd_ac97_update_bits  (ac97_t * \fIac97\fB, unsigned short \fIreg\fB, unsigned short \fImask\fB, unsigned short \fIvalue\fB);
\fR
.SH "ARGUMENTS"
.TP
\fB\fIac97\fB\fR
the ac97 instance
.TP
\fB\fIreg\fB\fR
the register to change
.TP
\fB\fImask\fB\fR
the bit-mask to change
.TP
\fB\fIvalue\fB\fR
the value to set
.SH "DESCRIPTION"
.PP
Updates the masked-bits on the given register only when the value
is changed.
.PP
Returns 1 if the bits are changed, 0 if no change, or a negative
code on failure.