Re: libasound2: brltty-espeak stops working with 1.1.2-1

[Jude DaShiell <jdashiel@panix.com>]

I've read one report in which speech-dispatcher is identically and 
adversely impacted too.

On Wed, 10 Aug 2016, Sebastian Humenda wrote:

> Date: Wed, 10 Aug 2016 14:30:25
> From: Sebastian Humenda <shumenda@gmx.de>
> To: Debian Bug Tracking System <submit@bugs.debian.org>
> Cc: debian-accessibility@lists.debian.org
> Subject: libasound2: brltty-espeak stops working with 1.1.2-1
> Resent-Date: Wed, 10 Aug 2016 18:30:45 +0000 (UTC)
> Resent-From: debian-accessibility@lists.debian.org
>
> Package: libasound2
> Version: 1.1.2
> Severity: serious
> Tags: patch
> Justification: breaks system for blind users [RC, stretch]
>
> After an upgrade to the specified version, BRLTTY starts up with speech working
> (brltty-espeak is using libao -> libasoun2), but speech stops working after
> roughly a minute. The BRLTTY process is still running, but speech cannot be
> brought back, only a restart of BRLTTY fixes this issue. All other playback of
> sound using ALSA works fine. Since it is not related to any changes in BRLTTY
> (tried several stable versions), the issue must be in libasound2. The provided
> patch fixes the issue reliably for me.
>
>
> -- System Information:
> Debian Release: stretch/sid
>  APT prefers testing
>  APT policy: (500, 'testing')
> Architecture: amd64 (x86_64)
> Foreign Architectures: i386
>
> Kernel: Linux 4.6.0-1-amd64 (SMP w/4 CPU cores)
> Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
> Shell: /bin/sh linked to /bin/dash
> Init: systemd (via /run/systemd/system)
>
> Content-Type: text/x-diff; charset="us-ascii"
> MIME-Version: 1.0
> Content-Transfer-Encoding: 7bit
> Content-Disposition: attachment; filename="patch"

--

--- ./src/pcm/pcm.c.orig	2016-08-10 19:39:59.881564371 +0200
+++ ./src/pcm/pcm.c	2016-08-10 19:40:04.211539997 +0200
@@ -2544,6 +2544,7 @@
 	pcm->fast_op_arg = pcm;
 	INIT_LIST_HEAD(&pcm->async_handlers);
 #ifdef THREAD_SAFE_API
+	pcm->thread_safe = 1;
 	pthread_mutex_init(&pcm->lock, NULL);
 	{
 		static int default_thread_safe = -1;