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Commit 29b4a4f7 authored by Johannes Berg's avatar Johannes Berg Committed by John W. Linville
Browse files

mac80211: fix IBSS code to not sleep while atomic 



With the RCU locking here we sleep while in an atomic context,
since we can sleep just use mutex locking for the interface
list instead of RCU. Sorry, seems I didn't get that in my UML
test.

Signed-off-by: default avatarJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 0cf4c01e

net/mac80211/ibss.c

+3 −3
Original line number Diff line number Diff line
@@ -784,14 +784,14 @@ void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local) 
{

	struct ieee80211_sub_if_data *sdata;



	rcu_read_lock();

	list_for_each_entry_rcu(sdata, &local->interfaces, list) {

	mutex_lock(&local->iflist_mtx);

	list_for_each_entry(sdata, &local->interfaces, list) {

		if (sdata->vif.type != NL80211_IFTYPE_ADHOC)

			continue;

		sdata->u.ibss.last_scan_completed = jiffies;

		ieee80211_sta_find_ibss(sdata);

	}

	rcu_read_unlock();

	mutex_unlock(&local->iflist_mtx);

}



ieee80211_rx_result