From: Johannes Berg <johannes.berg@intel.com>
Date: Mon, 28 Aug 2023 11:59:31 +0000 (+0200)
Subject: wifi: mac80211: lock wiphy for aggregation debugfs
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=e911a8192e29d7326e9062947ecd753c8572eb09;p=linux.git

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 <johannes.berg@intel.com>
---

diff --git a/net/mac80211/debugfs_sta.c b/net/mac80211/debugfs_sta.c
index 5a97fb248c85c..06e3613bf46bd 100644
--- a/net/mac80211/debugfs_sta.c
+++ b/net/mac80211/debugfs_sta.c
@@ -5,7 +5,7 @@
  * Copyright 2007	Johannes Berg <johannes@sipsolutions.net>
  * 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 <linux/debugfs.h>
@@ -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;
 }