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[v2,02/23] wifi: mac80211: adjust scan cancel comment/check

Message ID 20230301115906.84352e46f342.Id90fef8c581cebe19cb30274340cf43885d55c74@changeid (mailing list archive)
State Accepted
Delegated to: Johannes Berg
Headers show
Series cfg80211/mac80211 patches from our internal tree 2023-02-21 | expand

Commit Message

Greenman, Gregory March 1, 2023, 10:09 a.m. UTC 
From: Johannes Berg <johannes.berg@intel.com>

Instead of the comment about holding RTNL, which is now wrong,
add a proper lockdep assertion for the wiphy mutex.

Fixes: a05829a7222e ("cfg80211: avoid holding the RTNL when calling the driver")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
---
 net/mac80211/scan.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index dc3cdee51e66..32fa8aca7005 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -9,7 +9,7 @@ 
  * Copyright 2007, Michael Wu <flamingice@sourmilk.net>
  * Copyright 2013-2015  Intel Mobile Communications GmbH
  * Copyright 2016-2017  Intel Deutschland GmbH
- * Copyright (C) 2018-2021 Intel Corporation
+ * Copyright (C) 2018-2022 Intel Corporation
  */
 
 #include <linux/if_arp.h>
@@ -1246,11 +1246,11 @@  int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
 	return ret;
 }
 
-/*
- * Only call this function when a scan can't be queued -- under RTNL.
- */
 void ieee80211_scan_cancel(struct ieee80211_local *local)
 {
+	/* ensure a new scan cannot be queued */
+	lockdep_assert_wiphy(local->hw.wiphy);
+
 	/*
 	 * We are canceling software scan, or deferred scan that was not
 	 * yet really started (see __ieee80211_start_scan ).