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Commit 1c8d0663 authored by Johannes Berg's avatar Johannes Berg Committed by Greg Kroah-Hartman
Browse files

wifi: cfg80211: silence a sparse RCU warning 



[ Upstream commit 03c0ad4b06c3566de624b4f4b78ac1a5d1e4c8e7 ]

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: default avatarJohannes Berg <johannes.berg@intel.com>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent c38ea831

net/wireless/scan.c

+3 −1
Original line number Diff line number Diff line
@@ -1166,7 +1166,9 @@ 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);