---
name: "snd_ac97_pcm_double_rate_rules"
section: "9"
platform: "linux"
package: "linux-manual-4.9"
version: "4.9.228-1"
release: "Debian 9 (Stretch)"
platforms: ["linux"]
url: "https://new.carta.tech/snd_ac97_pcm_double_rate_rules"
---

# snd\_ac97\_pcm\_double\_rate\_rules(9)

set double rate constraints

## NAME

snd\_ac97\_pcm\_double\_rate\_rules - set double rate constraints

## SYNOPSIS

**int snd\_ac97\_pcm\_double\_rate\_rules(struct snd\_pcm\_runtime \*** *runtime***);**

## ARGUMENTS

*runtime*

the runtime of the ac97 front playback pcm

## DESCRIPTION

Installs the hardware constraint rules to prevent using double rates and more than two channels at the same time.

## RETURN

Zero if successful, or a negative error code on failure.

## COPYRIGHT