Re: kern/55130: audio sometimes plays a buzz sound for a few seconds when changing volume

[Tetsuya Isaki <isaki%pastel-flower.jp@localhost>]

The following reply was made to PR kern/55130; it has been noted by GNATS.

From: Tetsuya Isaki <isaki%pastel-flower.jp@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: kern-bug-people%netbsd.org@localhost,
	gnats-admin%netbsd.org@localhost,
	netbsd-bugs%netbsd.org@localhost,
	coypu%sdf.org@localhost
Subject: Re: kern/55130: audio sometimes plays a buzz sound for a few seconds when changing volume
Date: Wed, 08 Apr 2020 13:44:46 +0900

 At Sat,  4 Apr 2020 19:45:02 +0000 (UTC),
 coypu%sdf.org@localhost wrote:
 >  Should probably mention I got this message as well (just noticed)
 >  [ 24537.040276] audio0: stray interrupt
 
 This is unrelated.
 Audio layer called halt_output (or _input) to stop audio but
 MD driver called interrupt callback after that.  This is
 hdafg(4) issue.
 
 I'm not familiar with hdafg(4) but I think at least this patch
 will solve it.
 
 --- a/sys/dev/hdaudio/hdafg.c
 +++ b/sys/dev/hdaudio/hdafg.c
 @@ -4015,6 +4015,9 @@ hdafg_halt_output(void *opaque)
  
  	hdaudio_stream_stop(ad->ad_playback);
  
 +	/* Disable interrupt notification to upper layer */
 +	ad->ad_playbackintr = NULL;
 +
  	return 0;
  }
  
 @@ -4025,6 +4028,9 @@ hdafg_halt_input(void *opaque)
  
  	hdaudio_stream_stop(ad->ad_capture);
  
 +	/* Disable interrupt notification to upper layer */
 +	ad->ad_captureintr = NULL;
 +
  	return 0;
  }
  
 ---
 Tetsuya Isaki <isaki%pastel-flower.jp@localhost / isaki%NetBSD.org@localhost>