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mac80211: don't reconfigure sched scan in case of wowlan

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Scheduled scan has to be reconfigured only if wowlan wasn't
configured, since otherwise it should continue to run (with
the 'any' trigger) or be aborted.

The current code will end up asking the driver to start a new
scheduled scan without stopping the previous one, and leaking
some memory (from the previous request.)

Fix this by doing the abort/restart under the proper conditions.

Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Eliad Peller 2015-10-25 10:59:33 +02:00 • committed by Johannes Berg
parent 968a76cef3
commit 0d440ea294
5 changed files with 45 additions and 35 deletions
Download patch file Download diff file Expand all files Collapse all files

11
net/mac80211/pm.c
View file

@ -6,6 +6,13 @@
#include "driver-ops.h"
#include "led.h"
static void ieee80211_sched_scan_cancel(struct ieee80211_local *local)
{
if (ieee80211_request_sched_scan_stop(local))
return;
cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy);
}
int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
{
struct ieee80211_local *local = hw_to_local(hw);
@ -34,6 +41,10 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
mutex_unlock(&local->sta_mtx);
}
/* keep sched_scan only in case of 'any' trigger */
if (!(wowlan && wowlan->any))
ieee80211_sched_scan_cancel(local);
ieee80211_stop_queues_by_reason(hw,
IEEE80211_MAX_QUEUE_MAP,
IEEE80211_QUEUE_STOP_REASON_SUSPEND,