linux-kernel - [PATCH net-next 17/22] hv_netvsc: fix return type of ndo_start

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Message-ID: <20180920123306.14772-18-yuehaibing@huawei.com>
Date:   Thu, 20 Sep 2018 20:33:01 +0800
From:   YueHaibing <yuehaibing@...wei.com>
To:     <davem@...emloft.net>, <dmitry.tarnyagin@...kless.no>,
        <wg@...ndegger.com>, <mkl@...gutronix.de>,
        <michal.simek@...inx.com>, <hsweeten@...ionengravers.com>,
        <madalin.bucur@....com>, <pantelis.antoniou@...il.com>,
        <claudiu.manoil@....com>, <leoyang.li@....com>,
        <linux@...linux.org.uk>, <sammy@...my.net>, <ralf@...ux-mips.org>,
        <nico@...xnic.net>, <steve.glendinning@...well.net>,
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CC:     <linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>,
        <linux-can@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linuxppc-dev@...ts.ozlabs.org>, <linux-mips@...ux-mips.org>,
        <linux-omap@...r.kernel.org>, <linux-hams@...r.kernel.org>,
        <devel@...uxdriverproject.org>, <linux-usb@...r.kernel.org>,
        <xen-devel@...ts.xenproject.org>, <dev@...nvswitch.org>,
        YueHaibing <yuehaibing@...wei.com>
Subject: [PATCH net-next 17/22] hv_netvsc: fix return type of ndo_start_xmit function

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@...wei.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;
+	}
 
 	/* We will atmost need two pages to describe the rndis
 	 * header. We can only transmit MAX_PAGE_BUFFER_COUNT number
-- 
1.8.3.1