From 95c25b50711ca7e1f990bdcbca8fa713c942ab01 Mon Sep 17 00:00:00 2001
From: Nicola Fontana <ntd@entidi.it>
Date: Mon, 3 Jun 2024 12:45:48 +0200
Subject: [PATCH] Remove dev_base_lock for linux >= 6.9.0

Kernel commit 1b3ef46cb7f2618cc0b507393220a69810f6da12 removed
`dev_base_lock` from v6.9 onward.

Use the alternate iterator `for_each_netdev_rcu` introduced by commit
c6d14c84566d6b70ad9dc1618db0dec87cca9300 in 2.6.33+.
---
 devices/generic.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/devices/generic.c b/devices/generic.c
index f078057b..fd6fc863 100644
--- a/devices/generic.c
+++ b/devices/generic.c
@@ -423,14 +423,14 @@ int __init ec_gen_init_module(void)
     INIT_LIST_HEAD(&generic_devices);
     INIT_LIST_HEAD(&descs);
 
-    read_lock(&dev_base_lock);
-    for_each_netdev(&init_net, netdev) {
+    rcu_read_lock();
+    for_each_netdev_rcu(&init_net, netdev) {
         if (netdev->type != ARPHRD_ETHER)
             continue;
         desc = kmalloc(sizeof(ec_gen_interface_desc_t), GFP_ATOMIC);
         if (!desc) {
             ret = -ENOMEM;
-            read_unlock(&dev_base_lock);
+            rcu_read_unlock();
             goto out_err;
         }
         strncpy(desc->name, netdev->name, IFNAMSIZ);
@@ -439,7 +439,7 @@ int __init ec_gen_init_module(void)
         memcpy(desc->dev_addr, netdev->dev_addr, ETH_ALEN);
         list_add_tail(&desc->list, &descs);
     }
-    read_unlock(&dev_base_lock);
+    rcu_read_unlock();
 
     list_for_each_entry_safe(desc, next, &descs, list) {
         ret = offer_device(desc);