From 332ff7fe36bfdcab4ae7d35a2273ce431bf15171 Mon Sep 17 00:00:00 2001 From: Luciano Coelho Date: Thu, 22 Jan 2015 23:34:10 +0200 Subject: [PATCH] mac80211: complete scan work immediately if quiesced or suspended It is possible that a deferred scan is queued after the queues are flushed in __ieee80211_suspend(). The deferred scan work may be scheduled by ROC or ieee80211_stop_poll(). To make sure don't start a new scan while suspending, check whether we're quiescing or suspended and complete the scan immediately if that's the case. Signed-off-by: Luciano Coelho Signed-off-by: Johannes Berg --- net/mac80211/scan.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c index 7807fa42ed3f..05f0d711b6d8 100644 --- a/net/mac80211/scan.c +++ b/net/mac80211/scan.c @@ -828,6 +828,11 @@ void ieee80211_scan_work(struct work_struct *work) mutex_lock(&local->mtx); + if (!ieee80211_can_run_worker(local)) { + aborted = true; + goto out_complete; + } + sdata = rcu_dereference_protected(local->scan_sdata, lockdep_is_held(&local->mtx)); scan_req = rcu_dereference_protected(local->scan_req, -- 2.20.1