netdev - [PATCH net-next 4/6] netvsc: mark error cases as unlikely

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Message-Id: <20170608232123.28366-5-sthemmin@microsoft.com>
Date:   Thu,  8 Jun 2017 16:21:21 -0700
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     kys@...rosoft.com, haiyangz@...rosoft.com, sthemmin@...rosoft.com
Cc:     devel@...uxdriverproject.org, netdev@...r.kernel.org
Subject: [PATCH net-next 4/6] netvsc: mark error cases as unlikely

Mark if() statements used for error handling only as unlikely()

Signed-off-by: Stephen Hemminger <sthemmin@...rosoft.com>
---
 drivers/net/hyperv/netvsc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c
index 652453d9fb08..caf89a245ba6 100644
--- a/drivers/net/hyperv/netvsc.c
+++ b/drivers/net/hyperv/netvsc.c
@@ -855,14 +855,14 @@ int netvsc_send(struct hv_device *device,
 	bool xmit_more = (skb != NULL) ? skb->xmit_more : false;
 
 	net_device = get_outbound_net_device(device);
-	if (!net_device)
+	if (unlikely(!net_device))
 		return -ENODEV;
 
 	/* We may race with netvsc_connect_vsp()/netvsc_init_buf() and get
 	 * here before the negotiation with the host is finished and
 	 * send_section_map may not be allocated yet.
 	 */
-	if (!net_device->send_section_map)
+	if (unlikely(!net_device->send_section_map))
 		return -EAGAIN;
 
 	nvchan = &net_device->chan_table[packet->q_idx];
-- 
2.11.0