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From: stephen@networkplumber.org (Stephen Hemminger)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH net-next 17/22] hv_netvsc: fix return type of ndo_start_xmit function
Date: Thu, 20 Sep 2018 07:43:41 -0700	[thread overview]
Message-ID: <20180920074341.3acef75c@xeon-e3> (raw)
In-Reply-To: <20180920123306.14772-18-yuehaibing@huawei.com>

On Thu, 20 Sep 2018 20:33:01 +0800
YueHaibing <yuehaibing@huawei.com> 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>
> ---
>  drivers/net/hyperv/netvsc_drv.c | 10 +++++++---
>  1 file changed, 7 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c
> index 3af6d8d..056c472 100644
> --- a/drivers/net/hyperv/netvsc_drv.c
> +++ b/drivers/net/hyperv/netvsc_drv.c
> @@ -511,7 +511,8 @@ static int netvsc_vf_xmit(struct net_device *net, struct net_device *vf_netdev,
>  	return rc;
>  }
>  
> -static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net)
> +static netdev_tx_t
> +netvsc_start_xmit(struct sk_buff *skb, struct net_device *net)
>  {
>  	struct net_device_context *net_device_ctx = netdev_priv(net);
>  	struct hv_netvsc_packet *packet = NULL;
> @@ -528,8 +529,11 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net)
>  	 */
>  	vf_netdev = rcu_dereference_bh(net_device_ctx->vf_netdev);
>  	if (vf_netdev && netif_running(vf_netdev) &&
> -	    !netpoll_tx_running(net))
> -		return netvsc_vf_xmit(net, vf_netdev, skb);
> +	    !netpoll_tx_running(net)) {
> +		ret = netvsc_vf_xmit(net, vf_netdev, skb);
> +		if (ret)
> +			return NETDEV_TX_BUSY;
> +	}

Sorry, the new code is wrong. It will fall through if ret == 0 (NETDEV_TX_OK)
Please review and test your patches.

  parent reply	other threads:[~2018-09-20 14:43 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-20 12:32 [PATCH net-next 00/22] net: fix return type of ndo_start_xmit function YueHaibing
2018-09-20 12:32 ` [PATCH net-next 01/22] net: micrel: " YueHaibing
2018-09-20 12:32 ` [PATCH net-next 02/22] net: freescale: " YueHaibing
2018-09-20 12:32 ` [PATCH net-next 03/22] net: seeq: " YueHaibing
2018-09-20 12:32 ` [PATCH net-next 04/22] net: cirrus: " YueHaibing
2018-09-20 12:32 ` [PATCH net-next 05/22] net: sgi: " YueHaibing
2018-09-20 12:32 ` [PATCH net-next 06/22] net: wiznet: " YueHaibing
2018-09-20 12:32 ` [PATCH net-next 07/22] net: i825xx: " YueHaibing
2018-09-20 12:32 ` [PATCH net-next 08/22] net: apple: " YueHaibing
2018-09-20 12:32 ` [PATCH net-next 09/22] net: smsc: " YueHaibing
2018-09-20 12:32 ` [PATCH net-next 10/22] net: ti: " YueHaibing
2018-09-20 12:32 ` [PATCH net-next 11/22] net: faraday: " YueHaibing
2018-09-20 12:32 ` [PATCH net-next 12/22] net: ovs: " YueHaibing
2018-09-20 12:32 ` [PATCH net-next 13/22] net: xen-netback: " YueHaibing
2018-09-20 14:05   ` Wei Liu
2018-09-20 12:32 ` [PATCH net-next 14/22] net: caif: " YueHaibing
2018-09-20 12:32 ` [PATCH net-next 15/22] net: hamradio: " YueHaibing
2018-09-20 12:33 ` [PATCH net-next 16/22] usbnet: ipheth: " YueHaibing
2018-09-20 12:33 ` [PATCH net-next 17/22] hv_netvsc: " YueHaibing
2018-09-20 14:40   ` Haiyang Zhang
2018-09-20 14:43   ` Stephen Hemminger [this message]
2018-09-20 14:50     ` Haiyang Zhang
2018-09-21  1:35       ` YueHaibing
2018-09-21  1:37     ` YueHaibing
2018-09-20 12:33 ` [PATCH net-next 18/22] can: xilinx: " YueHaibing
2018-09-20 12:33 ` [PATCH net-next 19/22] net: plip: " YueHaibing
2018-09-20 12:33 ` [PATCH net-next 20/22] rionet: " YueHaibing
2018-09-20 12:33 ` [PATCH net-next 21/22] l2tp: " YueHaibing
2018-09-20 12:33 ` [PATCH net-next 22/22] net: hsr: " YueHaibing
2018-09-20 15:50 ` [PATCH net-next 00/22] net: " David Miller
2018-09-21  1:33   ` YueHaibing
2018-09-20 17:04 ` Grygorii Strashko

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