From f9369893ab4c07a7b873fcbc271a7d620e39c24b Mon Sep 17 00:00:00 2001
From: Sam Thursfield <sam@afuera.me.uk>
Date: Mon, 20 Jul 2020 10:18:27 +0200
Subject: [PATCH] s_audio_alsa: Only call alsa_checkiosync() if input and
output are open
As the comment above the alsa_checkiosync() function suggests, there's
no sync to be done if we only have an input or an output.
---
pd/src/s_audio_alsa.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/pd/src/s_audio_alsa.c b/pd/src/s_audio_alsa.c
index 2cca80e4f..9cbe017d6 100644
--- a/pd/src/s_audio_alsa.c
+++ b/pd/src/s_audio_alsa.c
@@ -421,7 +421,8 @@ int alsa_send_dacs(void)
callno++;
#endif
- alsa_checkiosync(); /* check I/O are in sync and data not late */
+ if (alsa_nindev > 0 && alsa_noutdev > 0)
+ alsa_checkiosync(); /* check I/O are in sync and data not late */
for (iodev = 0; iodev < alsa_nindev; iodev++)
{
--
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