From 9c2fb31d0ec13692eeefe1013b1f031da0e71395 Mon Sep 17 00:00:00 2001
From: Timo Wischer <twischer@de.adit-jv.com>
Date: Thu, 1 Mar 2018 17:34:44 +0100
Subject: [PATCH] pcm: Do not access lock_enabled if thread safe API

Without this commit compiling fails when THREAD_SAFE_API is not
enabled.

Signed-off-by: Timo Wischer <twischer@de.adit-jv.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 src/pcm/pcm.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/pcm/pcm.c b/src/pcm/pcm.c
index 1be38339..d53ed986 100644
--- a/src/pcm/pcm.c
+++ b/src/pcm/pcm.c
@@ -823,8 +823,11 @@ int snd_pcm_async(snd_pcm_t *pcm, int sig, pid_t pid)
 		sig = SIGIO;
 	if (pid == 0)
 		pid = getpid();
+
+#ifdef THREAD_SAFE_API
 	/* async handler may lead to a deadlock; suppose no multi thread */
 	pcm->lock_enabled = 0;
+#endif
 	return pcm->ops->async(pcm->op_arg, sig, pid);
 }
 #endif
-- 
2.47.1