From: Gerd Hoffmann <kraxel@redhat.com>
Date: Mon, 20 Jan 2020 10:18:04 +0000 (+0100)
Subject: audio/oss: fix buffer pos calculation
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=7a4ede0047a8613b0e3b72c9d351038f013dd357;p=qemu.git

audio/oss: fix buffer pos calculation

Fixes: 3ba4066d085f ("ossaudio: port to the new audio backend api")
Reported-by: ziming zhang <ezrakiez@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-Id: <20200120101804.29578-1-kraxel@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---

diff --git a/audio/ossaudio.c b/audio/ossaudio.c
index c43faeeea4..94564916fb 100644
--- a/audio/ossaudio.c
+++ b/audio/ossaudio.c
@@ -420,7 +420,7 @@ static size_t oss_write(HWVoiceOut *hw, void *buf, size_t len)
             size_t to_copy = MIN(len, hw->size_emul - hw->pos_emul);
             memcpy(hw->buf_emul + hw->pos_emul, buf, to_copy);
 
-            hw->pos_emul = (hw->pos_emul + to_copy) % hw->pos_emul;
+            hw->pos_emul = (hw->pos_emul + to_copy) % hw->size_emul;
             buf += to_copy;
             len -= to_copy;
         }