From 46aed20b32ee192955d30d9e81031071448b59f9 Mon Sep 17 00:00:00 2001
From: Tomohiro IKEDA <rilakkuma.san.xjapan@gmail.com>
Date: Fri, 29 Sep 2023 20:50:31 +0900
Subject: [PATCH] pcm: Add error handler for `read` that `snd_pcm_share_thread`
 function calls

---
 src/pcm/pcm_share.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/pcm/pcm_share.c b/src/pcm/pcm_share.c
index 0699fc87..8eac3497 100644
--- a/src/pcm/pcm_share.c
+++ b/src/pcm/pcm_share.c
@@ -414,7 +414,12 @@ static void *snd_pcm_share_thread(void *data)
 			Pthread_mutex_lock(&slave->mutex);
 			if (pfd[0].revents & POLLIN) {
 				char buf[1];
-				read(pfd[0].fd, buf, 1);
+				err = read(pfd[0].fd, buf, 1);
+				if (err < 0) {
+					SYSERR("can't read from a pipe");
+					Pthread_mutex_unlock(&slave->mutex);
+					return NULL;
+				}
 			}
 		} else {
 			slave->polling = 0;