target/linux/mediatek/patches-5.4/999-1714-v5.15-net-dsa-add-netdev_upper_dev_link.patch

From 120baca4e8b019d03c8d1a29012cea911629247a Mon Sep 17 00:00:00 2001
From: Bc-bocun Chen <bc-bocun.chen@mediatek.com>
Date: Mon, 18 Sep 2023 11:13:51 +0800
Subject: [PATCH] net dsa add netdev_upper_dev_link

---
 net/dsa/slave.c                |  11 +
 1 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 2dfaa1e..a60a26c 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -1495,8 +1495,19 @@ int dsa_slave_create(struct dsa_port *port)
 		goto out_phy;
 	}
 
+	rtnl_lock();
+
+	ret = netdev_upper_dev_link(master, slave_dev, NULL);
+
+	rtnl_unlock();
+
+	if (ret)
+		goto out_unregister;
+
 	return 0;
 
+out_unregister:
+	unregister_netdev(slave_dev);
 out_phy:
 	rtnl_lock();
 	phylink_disconnect_phy(p->dp->pl);
-- 
2.18.0