Bluetooth: BAP: Fix bad state check for broadcast sink

The state check used != instead of == to very that it entered
the streaming state for all streams.

Signed-off-by: Emil Gydesen <emil.gydesen@nordicsemi.no>

subsys/bluetooth/audio/bap_broadcast_sink.c

@@ -295,31 +295,30 @@ static void broadcast_sink_iso_recv(struct bt_iso_chan *chan,
 	}
 }
 
-/** Gets the "highest" state of all BIS in the broadcast sink */
-static enum bt_bap_ep_state broadcast_sink_get_state(struct bt_bap_broadcast_sink *sink)
+static bool broadcast_sink_is_in_state(struct bt_bap_broadcast_sink *sink,
+				       enum bt_bap_ep_state state)
 {
-	enum bt_bap_ep_state state = BT_BAP_EP_STATE_IDLE;
 	struct bt_bap_stream *stream;
 
 	if (sink == NULL) {
 		LOG_DBG("sink is NULL");
 
-		return state;
+		return state == BT_BAP_EP_STATE_IDLE;
 	}
 
 	if (sys_slist_is_empty(&sink->streams)) {
 		LOG_DBG("Sink does not have any streams");
 
-		return state;
+		return state == BT_BAP_EP_STATE_IDLE;
 	}
 
 	SYS_SLIST_FOR_EACH_CONTAINER(&sink->streams, stream, _node) {
-		if (stream->ep != NULL) {
-			state = MAX(state, stream->ep->status.state);
+		if (stream->ep != NULL && stream->ep->status.state != state) {
+			return false;
 		}
 	}
 
-	return state;
+	return true;
 }
 
 static void broadcast_sink_iso_connected(struct bt_iso_chan *chan)
@@ -362,7 +361,7 @@ static void broadcast_sink_iso_connected(struct bt_iso_chan *chan)
 		LOG_WRN("No callback for started set");
 	}
 
-	if (broadcast_sink_get_state(sink) != BT_BAP_EP_STATE_STREAMING) {
+	if (broadcast_sink_is_in_state(sink, BT_BAP_EP_STATE_STREAMING)) {
 		update_recv_state_big_synced(sink);
 	}
 }
@@ -1291,7 +1290,6 @@ int bt_bap_broadcast_sink_sync(struct bt_bap_broadcast_sink *sink, uint32_t inde
 
 int bt_bap_broadcast_sink_stop(struct bt_bap_broadcast_sink *sink)
 {
-	enum bt_bap_ep_state state;
 	int err;
 
 	CHECKIF(sink == NULL) {
@@ -1304,9 +1302,8 @@ int bt_bap_broadcast_sink_stop(struct bt_bap_broadcast_sink *sink)
 		return -EALREADY;
 	}
 
-	state = broadcast_sink_get_state(sink);
-	if (state != BT_BAP_EP_STATE_STREAMING && state != BT_BAP_EP_STATE_QOS_CONFIGURED) {
-		LOG_DBG("Broadcast sink %p invalid state: %u", sink, state);
+	if (broadcast_sink_is_in_state(sink, BT_BAP_EP_STATE_IDLE)) {
+		LOG_DBG("Broadcast sink %p in idle state", sink);
 		return -EBADMSG;
 	}
 
@@ -1324,16 +1321,14 @@ int bt_bap_broadcast_sink_stop(struct bt_bap_broadcast_sink *sink)
 
 int bt_bap_broadcast_sink_delete(struct bt_bap_broadcast_sink *sink)
 {
-	enum bt_bap_ep_state state;
 
 	CHECKIF(sink == NULL) {
 		LOG_DBG("sink is NULL");
 		return -EINVAL;
 	}
 
-	state = broadcast_sink_get_state(sink);
-	if (state != BT_BAP_EP_STATE_IDLE) {
-		LOG_DBG("Broadcast sink %p invalid state: %u", sink, state);
+	if (!broadcast_sink_is_in_state(sink, BT_BAP_EP_STATE_IDLE)) {
+		LOG_DBG("Broadcast sink %p not in idle state", sink);
 		return -EBADMSG;
 	}