From: Florian Fainelli <f.fainelli@gmail.com>
Date: Tue, 1 Aug 2017 19:11:10 +0000 (-0700)
Subject: gtp: Initialize 64-bit per-cpu stats correctly
X-Git-Tag: Ubuntu-5.4-5.4.0-11.14~7235^2~28^2~2
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=790cb2ebb3f9c5d26a320117d5d13cafe479484d;p=mirror_ubuntu-focal-kernel.git

gtp: Initialize 64-bit per-cpu stats correctly

On 32-bit hosts and with CONFIG_DEBUG_LOCK_ALLOC we should be seeing a
lockdep splat indicating this seqcount is not correctly initialized, fix
that by using netdev_alloc_pcpu_stats() instead of an open coded
allocation.

Fixes: 459aa660eb1d ("gtp: add initial driver for datapath of GPRS Tunneling Protocol (GTP-U)")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c
index 1542e837fdfa..f38e32a7ec9c 100644
--- a/drivers/net/gtp.c
+++ b/drivers/net/gtp.c
@@ -364,7 +364,7 @@ static int gtp_dev_init(struct net_device *dev)
 
 	gtp->dev = dev;
 
-	dev->tstats = alloc_percpu(struct pcpu_sw_netstats);
+	dev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
 	if (!dev->tstats)
 		return -ENOMEM;