From 98b83096561b4c5b56ca977e4bfe0f9ba5184c6f Mon Sep 17 00:00:00 2001
From: Tianyu Gao <gaotianyu1350@126.com>
Date: Fri, 3 May 2019 09:53:15 +0000
Subject: [PATCH] add ioctl to audio hello

---
 biscuit/c/audio_hello.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/biscuit/c/audio_hello.c b/biscuit/c/audio_hello.c
index 236338d..e738c7c 100644
--- a/biscuit/c/audio_hello.c
+++ b/biscuit/c/audio_hello.c
@@ -8910,7 +8910,10 @@ int main(int argc, char **argv)
         printf("fail to open /dev/dsp");
         return 1;
     }
+    ioctl(fd_dsp, 0, NULL);
     write(fd_dsp, sound, sizeof(sound));
+    ioctl(fd_dsp, 1, NULL);
+    printf("finish writing %d\n", sizeof(sound));
 
 	return 0;
 }