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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Nikita Yushchenko <nikita.yoush@cogentembedded.com>,
	Vivien Didelot <vivien.didelot@gmail.com>,
	"David S . Miller" <davem@davemloft.net>,
	Sasha Levin <sashal@kernel.org>,
	netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 4.9 08/18] net: dsa: mv88e6xxx: avoid error message on remove from VLAN 0
Date: Fri, 14 Jun 2019 16:30:24 -0400	[thread overview]
Message-ID: <20190614203037.27910-8-sashal@kernel.org> (raw)
In-Reply-To: <20190614203037.27910-1-sashal@kernel.org>

From: Nikita Yushchenko <nikita.yoush@cogentembedded.com>

[ Upstream commit 62394708f3e01c9f2be6be74eb6305bae1ed924f ]

When non-bridged, non-vlan'ed mv88e6xxx port is moving down, error
message is logged:

failed to kill vid 0081/0 for device eth_cu_1000_4

This is caused by call from __vlan_vid_del() with vin set to zero, over
call chain this results into _mv88e6xxx_port_vlan_del() called with
vid=0, and mv88e6xxx_vtu_get() called from there returns -EINVAL.

On symmetric path moving port up, call goes through
mv88e6xxx_port_vlan_prepare() that calls mv88e6xxx_port_check_hw_vlan()
that returns -EOPNOTSUPP for zero vid.

This patch changes mv88e6xxx_vtu_get() to also return -EOPNOTSUPP for
zero vid, then this error code is explicitly cleared in
dsa_slave_vlan_rx_kill_vid() and error message is no longer logged.

Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Reviewed-by: Vivien Didelot <vivien.didelot@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/dsa/mv88e6xxx/chip.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index dc510069d37b..2edd193c96ab 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -1742,7 +1742,7 @@ static int _mv88e6xxx_vtu_get(struct mv88e6xxx_chip *chip, u16 vid,
 	int err;
 
 	if (!vid)
-		return -EINVAL;
+		return -EOPNOTSUPP;
 
 	err = _mv88e6xxx_vtu_vid_write(chip, vid - 1);
 	if (err)
-- 
2.20.1


       reply	other threads:[~2019-06-14 20:30 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20190614203037.27910-1-sashal@kernel.org>
2019-06-14 20:30 ` Sasha Levin [this message]
2019-06-14 20:30 ` [PATCH AUTOSEL 4.9 09/18] net: hns: Fix loopback test failed at copper ports Sasha Levin
2019-06-14 20:30 ` [PATCH AUTOSEL 4.9 11/18] net: ethernet: mediatek: Use hw_feature to judge if HWLRO is supported Sasha Levin
2019-06-14 20:30 ` [PATCH AUTOSEL 4.9 12/18] net: ethernet: mediatek: Use NET_IP_ALIGN to judge if HW RX_2BYTE_OFFSET is enabled Sasha Levin

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