From a37694fde5ec2894a0a8d5150655f06ac554408e Mon Sep 17 00:00:00 2001
From: Wim Taymans <wtaymans@redhat.com>
Date: Tue, 14 Aug 2018 16:07:27 +0200
Subject: [PATCH] alsa: handle invalid timestamp from broken drivers

---
 spa/plugins/alsa/alsa-utils.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/spa/plugins/alsa/alsa-utils.c b/spa/plugins/alsa/alsa-utils.c
index 356a81b7d..c345ff136 100644
--- a/spa/plugins/alsa/alsa-utils.c
+++ b/spa/plugins/alsa/alsa-utils.c
@@ -559,6 +559,10 @@ static void alsa_on_playback_timeout_event(struct spa_source *source)
 
 	avail = snd_pcm_status_get_avail(status);
 	snd_pcm_status_get_htstamp(status, &state->now);
+	if (state->now.tv_sec == 0 && state->now.tv_nsec == 0) {
+		spa_log_warn(state->log, "0 from snd_pcm_status_get_htstamp %ld", avail);
+		clock_gettime(CLOCK_MONOTONIC, &state->now);
+	}
 
 	if (avail > state->buffer_frames)
 		avail = state->buffer_frames;