From: Johannes Berg <johannes.berg@intel.com>
Date: Thu, 28 Sep 2023 14:35:24 +0000 (+0300)
Subject: wifi: mac80211: don't recreate driver link debugfs in reconfig
X-Git-Tag: v6.5.12~426
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fb506ef6073c68a494d43a5b412b3429cdc04cf9;p=thirdparty%2Fkernel%2Fstable.git

wifi: mac80211: don't recreate driver link debugfs in reconfig

[ Upstream commit 822cab1987a0e028e38b60aecd98af0289b46e7b ]

We can delete any that we want to remove, but we can't
recreate the links as they already exist.

Fixes: 170cd6a66d9a ("wifi: mac80211: add netdev per-link debugfs data and driver hook")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230928172905.3d0214838421.I512a0ff86f631ff42bf25ea0cb2e8e8616794a94@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/net/mac80211/driver-ops.c b/net/mac80211/driver-ops.c
index 30cd0c905a24f..aa37a1410f377 100644
--- a/net/mac80211/driver-ops.c
+++ b/net/mac80211/driver-ops.c
@@ -510,10 +510,13 @@ int drv_change_vif_links(struct ieee80211_local *local,
 	if (ret)
 		return ret;
 
-	for_each_set_bit(link_id, &links_to_add, IEEE80211_MLD_MAX_NUM_LINKS) {
-		link = rcu_access_pointer(sdata->link[link_id]);
+	if (!local->in_reconfig) {
+		for_each_set_bit(link_id, &links_to_add,
+				 IEEE80211_MLD_MAX_NUM_LINKS) {
+			link = rcu_access_pointer(sdata->link[link_id]);
 
-		ieee80211_link_debugfs_drv_add(link);
+			ieee80211_link_debugfs_drv_add(link);
+		}
 	}
 
 	return 0;