From: stephen hemminger <stephen@networkplumber.org>
Date: Fri, 18 Aug 2017 13:46:23 -0700
Subject: net: make net sysfs attributes ro_after_init
Patch-mainline: v4.14-rc1
Git-commit: ec6cc5993c0f0c1e5a7cbb630c7ecc165e6d9e84
References: bsc#1109837

The attributes of net devices are immutable.

Ideally, attribute groups would contain const attributes
but there are too many places that do modifications of list
during startup (in other code) to allow that.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 net/core/net-sysfs.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -508,7 +508,7 @@ static ssize_t phys_switch_id_show(struc
 }
 static DEVICE_ATTR_RO(phys_switch_id);
 
-static struct attribute *net_class_attrs[] = {
+static struct attribute *net_class_attrs[] __ro_after_init = {
 	&dev_attr_netdev_group.attr,
 	&dev_attr_type.attr,
 	&dev_attr_dev_id.attr,
@@ -597,7 +597,7 @@ NETSTAT_ENTRY(rx_compressed);
 NETSTAT_ENTRY(tx_compressed);
 NETSTAT_ENTRY(rx_nohandler);
 
-static struct attribute *netstat_attrs[] = {
+static struct attribute *netstat_attrs[] __ro_after_init = {
 	&dev_attr_rx_packets.attr,
 	&dev_attr_tx_packets.attr,
 	&dev_attr_rx_bytes.attr,