From: Stephen Hemminger <stephen@networkplumber.org>
Date: Mon, 14 May 2018 22:32:10 +0000 (-0700)
Subject: hv_netvsc: only wake transmit queue if link is up
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=4857dca4dd65756dfdb90b33946d8f9d5c6447b8;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

hv_netvsc: only wake transmit queue if link is up

[ Commit f4950e4586dfc957e0a28226eeb992ddc049b5a2 upstream. ]

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c
index cc5bf9544d57..40a45f11550c 100644
--- a/drivers/net/hyperv/netvsc_drv.c
+++ b/drivers/net/hyperv/netvsc_drv.c
@@ -88,12 +88,11 @@ 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