netdev - Re: [PATCH net] net: dsa: Unregister slave

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Date:	Wed, 17 Feb 2016 18:28:22 -0800
From:	Florian Fainelli <f.fainelli@...il.com>
To:	netdev@...r.kernel.org
Cc:	davem@...emloft.net, andrew@...n.ch, opendmb@...il.com
Subject: Re: [PATCH net] net: dsa: Unregister slave_dev in error path

Le 17/02/2016 18:19, Florian Fainelli a écrit :
> With commit 0071f56e46da ("dsa: Register netdev before phy"), we are now trying
> to unregister

s/unregister/free/...

 a network device that has been previously registered, and in case
> of errors, this will make us hit the BUG_ON(dev->reg_state !=
> NETREG_UNREGISTERED) condition.
> 
> Fix this by adding a missing unregister_netdev() before free_netdev().
> 
> Fixes: 0071f56e46da ("dsa: Register netdev before phy")
> Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
> ---
>  net/dsa/slave.c |    1 +
>  1 files changed, 1 insertions(+), 0 deletions(-)
> 
> diff --git a/net/dsa/slave.c b/net/dsa/slave.c
> index 40b9ca7..e685042 100644
> --- a/net/dsa/slave.c
> +++ b/net/dsa/slave.c
> @@ -1205,6 +1205,7 @@ int dsa_slave_create(struct dsa_switch *ds, struct device *parent,
>  	ret = dsa_slave_phy_setup(p, slave_dev);
>  	if (ret) {
>  		netdev_err(master, "error %d setting up slave phy\n", ret);
> +		unregister_netdev(slave_dev);
>  		free_netdev(slave_dev);
>  		return ret;
>  	}
> 


-- 
Florian