From e911a8192e29d7326e9062947ecd753c8572eb09 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 28 Aug 2023 13:59:31 +0200 Subject: [PATCH] wifi: mac80211: lock wiphy for aggregation debugfs To change aggregation status may call into the driver, lock the wiphy for this. Signed-off-by: Johannes Berg --- net/mac80211/debugfs_sta.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/net/mac80211/debugfs_sta.c b/net/mac80211/debugfs_sta.c index 5a97fb248c85..06e3613bf46b 100644 --- a/net/mac80211/debugfs_sta.c +++ b/net/mac80211/debugfs_sta.c @@ -5,7 +5,7 @@ * Copyright 2007 Johannes Berg * Copyright 2013-2014 Intel Mobile Communications GmbH * Copyright(c) 2016 Intel Deutschland GmbH - * Copyright (C) 2018 - 2022 Intel Corporation + * Copyright (C) 2018 - 2023 Intel Corporation */ #include @@ -420,6 +420,7 @@ static ssize_t sta_agg_status_write(struct file *file, const char __user *userbu if (ret || tid >= IEEE80211_NUM_TIDS) return -EINVAL; + wiphy_lock(sta->local->hw.wiphy); if (tx) { if (start) ret = ieee80211_start_tx_ba_session(&sta->sta, tid, @@ -431,6 +432,7 @@ static ssize_t sta_agg_status_write(struct file *file, const char __user *userbu 3, true); ret = 0; } + wiphy_unlock(sta->local->hw.wiphy); return ret ?: count; }