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mac80211: stop timers before canceling work items

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Re-order the quiesce code so that timers are always
stopped before work-items are flushed. This was not
the problem I saw, but I think it may still be more
correct.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Ben Greear 2013-02-20 09:41:08 -08:00 committed by Johannes Berg
parent cb601ffa32
commit 9b5bd5a491
1 changed files with 9 additions and 5 deletions
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14
net/mac80211/mlme.c
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@ -3502,6 +3502,14 @@ void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
/*
* Stop timers before deleting work items, as timers
* could race and re-add the work-items. They will be
* re-established on connection.
*/
del_timer_sync(&ifmgd->conn_mon_timer);
del_timer_sync(&ifmgd->bcn_mon_timer);
/*
* we need to use atomic bitops for the running bits
* only because both timers might fire at the same
@ -3516,13 +3524,9 @@ void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata)
if (del_timer_sync(&ifmgd->timer))
set_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running);
cancel_work_sync(&ifmgd->chswitch_work);
if (del_timer_sync(&ifmgd->chswitch_timer))
set_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running);
/* these will just be re-established on connection */
del_timer_sync(&ifmgd->conn_mon_timer);
del_timer_sync(&ifmgd->bcn_mon_timer);
cancel_work_sync(&ifmgd->chswitch_work);
}
void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata)