Split out the function virtio_snd_pcm_set_active() from
virtio_snd_pcm_start_stop(). A later patch also needs this
new funcion. There is no functional change.

Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
---
 hw/audio/virtio-snd.c | 21 ++++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)

diff --git a/hw/audio/virtio-snd.c b/hw/audio/virtio-snd.c
index a1d14caba0..06a27ef8d9 100644
--- a/hw/audio/virtio-snd.c
+++ b/hw/audio/virtio-snd.c
@@ -471,6 +471,21 @@ static void virtio_snd_pcm_open(VirtIOSoundPCMStream *stream)
     }
 }
 
+/*
+ * Activate/deactivate a stream.
+ *
+ * @stream: VirtIOSoundPCMStream *stream
+ * @active: whether to activate or deactivate the stream
+ */
+static void virtio_snd_pcm_set_active(VirtIOSoundPCMStream *stream, bool active)
+{
+    if (stream->info.direction == VIRTIO_SND_D_OUTPUT) {
+        AUD_set_active_out(stream->voice.out, active);
+    } else {
+        AUD_set_active_in(stream->voice.in, active);
+    }
+}
+
 /*
  * Close a stream and free all its resources.
  *
@@ -606,11 +621,7 @@ static uint32_t virtio_snd_pcm_start_stop(VirtIOSound *s,
         stream->state = VSND_PCMSTREAM_STATE_STOPPED;
     }
 
-    if (stream->info.direction == VIRTIO_SND_D_OUTPUT) {
-        AUD_set_active_out(stream->voice.out, start);
-    } else {
-        AUD_set_active_in(stream->voice.in, start);
-    }
+    virtio_snd_pcm_set_active(stream, start);
 
     return cpu_to_le32(VIRTIO_SND_S_OK);
 }
-- 
2.35.3