[PATCH BlueZ v3 4/5] audio: fix VCP connection management

[Michal Dzik <michal.dzik@xxxxxxxxxxxxxxxxxxx>]

Those changes are mandatory to be able to connect to the same VCP
renderer more than once without need to restart bluez.
- use vcp_disconnect() to close client connection and reset vcs members
- call bt_vcp_detach() the same way as bt_vcp_attach - from btd_profile
  callback
---
 profiles/audio/vcp.c | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/profiles/audio/vcp.c b/profiles/audio/vcp.c
index cc6f352c1..d3723515a 100644
--- a/profiles/audio/vcp.c
+++ b/profiles/audio/vcp.c
@@ -72,7 +72,16 @@ static void vcp_debug(const char *str, void *user_data)
 
 static int vcp_disconnect(struct btd_service *service)
 {
+	struct vcp_data *data = btd_service_get_user_data(service);
 	DBG("");
+
+	if (!data) {
+		error("VCP service not handled by profile");
+		return -EINVAL;
+	}
+	bt_vcp_detach(data->vcp);
+
+	btd_service_disconnecting_complete(service, 0);
 	return 0;
 }
 
@@ -188,7 +197,7 @@ bool bt_audio_vcp_set_volume(struct btd_device *device, int8_t volume)
 	return FALSE;
 }
 
-static void vcp_detached(struct bt_vcp *vcp, void *user_data)
+static void vcp_remote_client_detached(struct bt_vcp *vcp, void *user_data)
 {
 	struct vcp_data *data;
 
@@ -203,7 +212,7 @@ static void vcp_detached(struct bt_vcp *vcp, void *user_data)
 	vcp_data_remove(data);
 }
 
-static void vcp_attached(struct bt_vcp *vcp, void *user_data)
+static void vcp_remote_client_attached(struct bt_vcp *vcp, void *user_data)
 {
 	struct vcp_data *data;
 	struct bt_att *att;
@@ -354,7 +363,8 @@ static int vcp_init(void)
 	if (err)
 		return err;
 
-	vcp_id = bt_vcp_register(vcp_attached, vcp_detached, NULL);
+	vcp_id = bt_vcp_register(vcp_remote_client_attached,
+					    vcp_remote_client_detached, NULL);
 
 	return 0;
 }
-- 
2.34.1