From 03c0ad4b06c3566de624b4f4b78ac1a5d1e4c8e7 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Thu, 13 Oct 2022 19:41:51 +0200
Subject: [PATCH] wifi: cfg80211: silence a sparse RCU warning
Git-commit: 03c0ad4b06c3566de624b4f4b78ac1a5d1e4c8e7
Patch-mainline: v6.1-rc5
References: git-fixes
All we're going to do with this pointer is assign it to
another __rcu pointer, but sparse can't see that, so
use rcu_access_pointer() to silence the warning here.
Fixes: c90b93b5b782 ("wifi: cfg80211: update hidden BSSes to avoid WARN_ON")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
net/wireless/scan.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index 806a5f1330ff..da752b0cc752 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -1674,7 +1674,9 @@ cfg80211_update_known_bss(struct cfg80211_registered_device *rdev,
if (old == rcu_access_pointer(known->pub.ies))
rcu_assign_pointer(known->pub.ies, new->pub.beacon_ies);
- cfg80211_update_hidden_bsses(known, new->pub.beacon_ies, old);
+ cfg80211_update_hidden_bsses(known,
+ rcu_access_pointer(new->pub.beacon_ies),
+ old);
if (old)
kfree_rcu((struct cfg80211_bss_ies *)old, rcu_head);
--
2.35.3