[PATCH v2 2/2] ASoC: audio-graph-card2: Use helper function of_get_child_count()

[Zhang Zekun <zhangzekun11@xxxxxxxxxx>]

of_get_child_count() can help to get the num of child directly and we
don't need to manually count the child num. No functional change with
this conversion.

Signed-off-by: Zhang Zekun <zhangzekun11@xxxxxxxxxx>
---
v2: Remove the use of for_each_child_of_node() to avoid code logic
broken and add the comment back.

 sound/soc/generic/audio-graph-card2.c | 11 +----------
 1 file changed, 1 insertion(+), 10 deletions(-)

diff --git a/sound/soc/generic/audio-graph-card2.c b/sound/soc/generic/audio-graph-card2.c
index 56f7f946882e..ebbe12692f57 100644
--- a/sound/soc/generic/audio-graph-card2.c
+++ b/sound/soc/generic/audio-graph-card2.c
@@ -1141,21 +1141,12 @@ static int graph_counter(struct device_node *lnk)
 	 */
 	if (graph_lnk_is_multi(lnk)) {
 		struct device_node *ports = port_to_ports(lnk);
-		struct device_node *port = NULL;
-		int cnt = 0;
 
 		/*
 		 * CPU/Codec = N:M case has many endpoints.
 		 * We can't use of_graph_get_endpoint_count() here
 		 */
-		while(1) {
-			port = of_get_next_child(ports, port);
-			if (!port)
-				break;
-			cnt++;
-		}
-
-		return cnt - 1;
+		return of_get_child_count(ports) - 1;
 	}
 	/*
 	 * Single CPU / Codec
-- 
2.17.1