From: Johannes Berg Date: Wed, 28 Mar 2012 09:04:27 +0000 (+0200) Subject: mac80211: debounce queue stop/wake X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=ada151252655b63409860e0795993cb369e667cc;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git mac80211: debounce queue stop/wake When the queue status changes we need to do a fair bit of work, so ignore no-op changes early. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 2b62307825d4..ef725cabb099 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -276,6 +276,9 @@ static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, if (WARN_ON(queue >= hw->queues)) return; + if (!test_bit(reason, &local->queue_stop_reasons[queue])) + return; + __clear_bit(reason, &local->queue_stop_reasons[queue]); if (local->queue_stop_reasons[queue] != 0) @@ -323,6 +326,9 @@ static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue, if (WARN_ON(queue >= hw->queues)) return; + if (test_bit(reason, &local->queue_stop_reasons[queue])) + return; + __set_bit(reason, &local->queue_stop_reasons[queue]); rcu_read_lock();