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Date:   Wed, 26 Sep 2018 13:43:30 +0200
From:   Guillaume Nault <g.nault@alphalink.fr>
To:     YueHaibing <yuehaibing@huawei.com>
Cc:     davem@davemloft.net, arnd@arndb.de, linux-kernel@vger.kernel.org,
        netdev@vger.kernel.org
Subject: Re: [PATCH net-next] l2tp: fix return type of ndo_start_xmit function
Message-ID: <20180926114330.GA1487@alphalink.fr>
References: <20180926103839.28584-1-yuehaibing@huawei.com>
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On Wed, Sep 26, 2018 at 06:38:39PM +0800, YueHaibing wrote:
> The method ndo_start_xmit() is defined as returning an 'netdev_tx_t',
> which is a typedef for an enum type, so make sure the implementation in
> this driver has returns 'netdev_tx_t' value, and change the function
> return type to netdev_tx_t.
> 
> Found by coccinelle.
> 
> Signed-off-by: YueHaibing <yuehaibing@huawei.com>
> ---
>  net/l2tp/l2tp_eth.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/net/l2tp/l2tp_eth.c b/net/l2tp/l2tp_eth.c
> index 8aadc4f..4173cb1 100644
> --- a/net/l2tp/l2tp_eth.c
> +++ b/net/l2tp/l2tp_eth.c
> @@ -77,7 +77,8 @@ static void l2tp_eth_dev_uninit(struct net_device *dev)
>  	 */
>  }
>  
> -static int l2tp_eth_dev_xmit(struct sk_buff *skb, struct net_device *dev)
> +static netdev_tx_t
> +l2tp_eth_dev_xmit(struct sk_buff *skb, struct net_device *dev)

Return type and function name are generally kept on the same line:
+static netdev_tx_t l2tp_eth_dev_xmit(struct sk_buff *skb,
+				      struct net_device *dev)

Anyway,
Acked-by: Guillaume Nault <g.nault@alphalink.fr>