[PATCH v5 05/10] hw/audio/virtio-sound: free all stream buffers on reset

[Alexander Mikhalitsyn <alexander@mihalicyn.com>]

From: Volker Rümelin <vr_qemu@t-online.de>

All remaining stream buffers in the stream queues must
be freed after a reset. This is the initial state of the
virtio-sound device.

Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
[AM: trivial variable rename s -> vsnd]
Signed-off-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@futurfusion.io>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
---
v4:
	- reduced a scope of loop counter variable in virtio_snd_reset
	  (as suggested by Manos Pitsidianakis)
---
 hw/audio/virtio-snd.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/hw/audio/virtio-snd.c b/hw/audio/virtio-snd.c
index 84083be8825..f9822fc609a 100644
--- a/hw/audio/virtio-snd.c
+++ b/hw/audio/virtio-snd.c
@@ -1364,6 +1364,16 @@ static void virtio_snd_reset(VirtIODevice *vdev)
         QTAILQ_REMOVE(&vsnd->cmdq, cmd, next);
         virtio_snd_ctrl_cmd_free(cmd);
     }
+
+    for (uint32_t i = 0; i < vsnd->snd_conf.streams; i++) {
+        VirtIOSoundPCMStream *stream = &vsnd->streams[i];
+        VirtIOSoundPCMBuffer *buffer;
+
+        while ((buffer = QSIMPLEQ_FIRST(&stream->queue))) {
+            QSIMPLEQ_REMOVE_HEAD(&stream->queue, entry);
+            virtio_snd_pcm_buffer_free(buffer);
+        }
+    }
 }
 
 static void virtio_snd_class_init(ObjectClass *klass, const void *data)
-- 
2.47.3