linux-kernel - Re: [PATCH net] net: dsa: fix preparation of a port STP update

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Message-Id: <20150929.213711.40970808547534906.davem@davemloft.net>
Date:	Tue, 29 Sep 2015 21:37:11 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	vivien.didelot@...oirfairelinux.com
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel@...oirfairelinux.com, andrew@...n.ch
Subject: Re: [PATCH net] net: dsa: fix preparation of a port STP update

From: Vivien Didelot <vivien.didelot@...oirfairelinux.com>
Date: Tue, 29 Sep 2015 14:17:54 -0400

> Because of the default 0 value of ret in dsa_slave_port_attr_set, a
> driver may return -EOPNOTSUPP from the commit phase of a STP state,
> which triggers a WARN() from switchdev.
> 
> This happened on a 6185 switch which does not support hardware bridging.
> 
> Fixes: 3563606258cf ("switchdev: convert STP update to switchdev attr set")
> Reported-by: Andrew Lunn <andrew@...n.ch>
> Signed-off-by: Vivien Didelot <vivien.didelot@...oirfairelinux.com>

Applied and queued up for -stable, thanks.
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