From c0f924738de2b8f5478e8b454b4ad5521802f3f6 Mon Sep 17 00:00:00 2001
From: dvdli <dvdli@google.com>
Date: Thu, 28 Jan 2021 11:53:30 +0800
Subject: prepare in pcm_generic_transfer

---
 src/pcm.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src')

diff --git a/src/pcm.c b/src/pcm.c
index 8678919..3d7da0c 100644
--- a/src/pcm.c
+++ b/src/pcm.c
@@ -1637,6 +1637,10 @@ static int pcm_generic_transfer(struct pcm *pcm, void *data,
     if (frames > INT_MAX)
         return -EINVAL;
 
+    if (pcm_state(pcm) == PCM_STATE_SETUP && pcm_prepare(pcm) != 0) {
+        return -1;
+    }
+
 again:
 
     if (pcm->flags & PCM_MMAP)
-- 
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