From: Johannes Berg johannes.berg@intel.com
stable inclusion from stable-v6.6.9 commit 35de90d7fab8289d5fbd31406dde0b8944304113 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8SU2D
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 63bafd9d5421959b2124dd940ed8d7462d99f449 ]
If we're doing reconfig, then we cannot add the debugfs files that are already there from before the reconfig. Skip that in drv_change_sta_links() during reconfig.
Fixes: d2caad527c19 ("wifi: mac80211: add API to show the link STAs in debugfs") Signed-off-by: Johannes Berg johannes.berg@intel.com Reviewed-by: Gregory Greenman gregory.greenman@intel.com Reviewed-by: Benjamin Berg benjamin.berg@intel.com Signed-off-by: Miri Korenblit miriam.rachel.korenblit@intel.com Link: https://msgid.link/20231211085121.88a950f43e16.Id71181780994649219685887c0fc... Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- net/mac80211/driver-ops.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/net/mac80211/driver-ops.c b/net/mac80211/driver-ops.c index aa37a1410f37..f8af0c3d405a 100644 --- a/net/mac80211/driver-ops.c +++ b/net/mac80211/driver-ops.c @@ -1,7 +1,7 @@ // SPDX-License-Identifier: GPL-2.0-only /* * Copyright 2015 Intel Deutschland GmbH - * Copyright (C) 2022 Intel Corporation + * Copyright (C) 2022-2023 Intel Corporation */ #include <net/mac80211.h> #include "ieee80211_i.h" @@ -564,6 +564,10 @@ int drv_change_sta_links(struct ieee80211_local *local, if (ret) return ret;
+ /* during reconfig don't add it to debugfs again */ + if (local->in_reconfig) + return 0; + for_each_set_bit(link_id, &links_to_add, IEEE80211_MLD_MAX_NUM_LINKS) { link_sta = rcu_dereference_protected(info->link[link_id], lockdep_is_held(&local->sta_mtx));