From: Stephen Hemminger <stephen@networkplumber.org>

Date: Fri, 2 Mar 2018 13:49:02 -0800

Patch-mainline: v4.16-rc5

Subject: hv_netvsc: only wake transmit queue if link is up

Git-commit: f4950e4586dfc957e0a28226eeb992ddc049b5a2

References: fate#323887

Don't wake transmit queues if link is not up yet.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>

Signed-off-by: David S. Miller <davem@davemloft.net>

Acked-by: Olaf Hering <ohering@suse.de>

---

 drivers/net/hyperv/netvsc_drv.c | 7 +++----

 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c

--- a/drivers/net/hyperv/netvsc_drv.c

+++ b/drivers/net/hyperv/netvsc_drv.c

@@ -91,12 +91,11 @@ static int netvsc_open(struct net_device *net)

 		return ret;

 	}

-	netif_tx_wake_all_queues(net);

-

 	rdev = nvdev->extension;

-

-	if (!rdev->link_state)

+	if (!rdev->link_state) {

 		netif_carrier_on(net);

+		netif_tx_wake_all_queues(net);

+	}

 	if (vf_netdev) {

 		/* Setting synthetic device up transparently sets