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Message-Id: <20210517062506.5045-1-eldargasanov2@gmail.com>
Date:   Mon, 17 May 2021 09:25:06 +0300
From:   Eldar Gasanov <eldargasanov2@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     netdev@...r.kernel.org, Eldar Gasanov <eldargasanov2@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH] mv88e6xxx: fixed adding vlan 0

8021q module adds vlan 0 to all interfaces when it starts.
When 8021q module is loaded it isn't possible to create bond
with mv88e6xxx interfaces, bonding module dipslay error
"Couldn't add bond vlan ids", because it tries to add vlan 0
to slave interfaces.

Signed-off-by: Eldar Gasanov <eldargasanov2@...il.com>
---
 drivers/net/dsa/mv88e6xxx/chip.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index eca285aaf72f..961fa6b75cad 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -1618,9 +1618,6 @@ static int mv88e6xxx_port_check_hw_vlan(struct dsa_switch *ds, int port,
 	struct mv88e6xxx_vtu_entry vlan;
 	int i, err;
 
-	if (!vid)
-		return -EOPNOTSUPP;
-
 	/* DSA and CPU ports have to be members of multiple vlans */
 	if (dsa_is_dsa_port(ds, port) || dsa_is_cpu_port(ds, port))
 		return 0;
@@ -2109,6 +2106,9 @@ static int mv88e6xxx_port_vlan_add(struct dsa_switch *ds, int port,
 	u8 member;
 	int err;
 
+	if (!vlan->vid)
+		return 0;
+
 	err = mv88e6xxx_port_vlan_prepare(ds, port, vlan);
 	if (err)
 		return err;
-- 
2.25.1

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