openwrt/target/linux/generic/backport-5.4/753-v5.8-net-dsa-mt7530-fix-VLAN-setup.patch

From 0141792f8b7300006b874dda1c35acd0abd90d9d Mon Sep 17 00:00:00 2001
From: DENG Qingfang <dqfext@gmail.com>
Date: Fri, 15 May 2020 23:25:55 +0800
Subject: net: dsa: mt7530: fix VLAN setup

Allow DSA to add VLAN entries even if VLAN filtering is disabled, so
enabling it will not block the traffic of existent ports in the bridge

Signed-off-by: DENG Qingfang <dqfext@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/dsa/mt7530.c | 13 +------------
 1 file changed, 1 insertion(+), 12 deletions(-)

--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -1096,12 +1096,6 @@ mt7530_port_vlan_add(struct dsa_switch *
 	struct mt7530_priv *priv = ds->priv;
 	u16 vid;
 
-	/* The port is kept as VLAN-unaware if bridge with vlan_filtering not
-	 * being set.
-	 */
-	if (!dsa_port_is_vlan_filtering(&ds->ports[port]))
-		return;
-
 	mutex_lock(&priv->reg_mutex);
 
 	for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) {
@@ -1127,12 +1121,6 @@ mt7530_port_vlan_del(struct dsa_switch *
 	struct mt7530_priv *priv = ds->priv;
 	u16 vid, pvid;
 
-	/* The port is kept as VLAN-unaware if bridge with vlan_filtering not
-	 * being set.
-	 */
-	if (!dsa_port_is_vlan_filtering(&ds->ports[port]))
-		return 0;
-
 	mutex_lock(&priv->reg_mutex);
 
 	pvid = priv->ports[port].pvid;
@@ -1245,6 +1233,7 @@ mt7530_setup(struct dsa_switch *ds)
 	 * as two netdev instances.
 	 */
 	dn = ds->ports[MT7530_CPU_PORT].master->dev.of_node->parent;
+	ds->configure_vlan_while_not_filtering = true;
 
 	if (priv->id == ID_MT7530) {
 		regulator_set_voltage(priv->core_pwr, 1000000, 1000000);