[src/trunk]: src/sys/dev PR 50613: Onno van der Linden: unpausing audio(4) ca...

[nat <nat%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/1d1794a9391a
branches:  trunk
changeset: 349465:1d1794a9391a
user:      nat <nat%NetBSD.org@localhost>
date:      Sun Dec 11 07:36:30 2016 +0000

description:
PR 50613: Onno van der Linden: unpausing audio(4) causes already written
          data to be dropped.
Applied patch prepared by Onno.

diffstat:

 sys/dev/audio.c |  7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diffs (28 lines):

diff -r 29f8c4c4877e -r 1d1794a9391a sys/dev/audio.c
--- a/sys/dev/audio.c   Sun Dec 11 07:36:20 2016 +0000
+++ b/sys/dev/audio.c   Sun Dec 11 07:36:30 2016 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: audio.c,v 1.275 2016/12/10 22:37:12 christos Exp $     */
+/*     $NetBSD: audio.c,v 1.276 2016/12/11 07:36:30 nat Exp $  */
 
 /*-
  * Copyright (c) 2016 Nathanial Sloss <nathanialsloss%yahoo.com.au@localhost>
@@ -148,7 +148,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: audio.c,v 1.275 2016/12/10 22:37:12 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: audio.c,v 1.276 2016/12/11 07:36:30 nat Exp $");
 
 #include "audio.h"
 #if NAUDIO > 0
@@ -4506,7 +4506,8 @@
                int init_error;
 
                mutex_enter(sc->sc_intr_lock);
-               init_error = audio_initbufs(sc, n);
+               init_error = (pausechange == 1 && reset == 0) ? 0 :
+                   audio_initbufs(sc, n);
                if (init_error) goto err;
                if (vc->sc_mpr.blksize != oldpblksize ||
                    vc->sc_mrr.blksize != oldrblksize ||