mac80211: Run deferred scan if last roc_list item is not started
mac80211 scan processing could get stuck if roc work for pending, but not started when a scan request was deferred due to such roc item. Normally the deferred scan would be started from ieee80211_start_next_roc(), but ieee80211_sw_roc_work() calls that only if the finished ROC was started. Fix this by calling ieee80211_run_deferred_scan() in the case the last ROC was not actually started. This issue was hit relatively easily in P2P find operations where Listen state (remain-on-channel) and Search state (scan) are repeated in a loop. Signed-off-by: Jouni Malinen <j@w1.fi> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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@ -394,6 +394,8 @@ void ieee80211_sw_roc_work(struct work_struct *work)
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if (started)
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ieee80211_start_next_roc(local);
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else if (list_empty(&local->roc_list))
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ieee80211_run_deferred_scan(local);
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}
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out_unlock:
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