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Date:   Sun, 02 Jun 2019 13:54:17 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     nikita.yoush@...entembedded.com
Cc:     andrew@...n.ch, vivien.didelot@...il.com, f.fainelli@...il.com,
        hkallweit1@...il.com, marek.behun@....cz,
        rmk+kernel@...linux.org.uk, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, cphealy@...il.com
Subject: Re: [PATCH] net: dsa: mv88e6xxx: avoid error message on remove
 from VLAN 0

From: Nikita Yushchenko <nikita.yoush@...entembedded.com>
Date: Fri, 31 May 2019 10:35:14 +0300

> 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@...entembedded.com>

Applied.

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