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mac80211: handle failed restart/resume better

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When the driver fails during HW restart or resume, the whole
stack goes into a very confused state with interfaces being
up while the hardware is down etc.

Address this by shutting down everything; we'll run into a
lot of warnings in the process but that's better than having
the whole stack get messed up.

Reviewed-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2014-04-30 14:19:04 +02:00
parent f29f58a9e5
commit f6837ba8c9
6 changed files with 153 additions and 51 deletions
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15
net/mac80211/scan.c
View file

@ -1076,12 +1076,8 @@ void ieee80211_sched_scan_results(struct ieee80211_hw *hw)
}
EXPORT_SYMBOL(ieee80211_sched_scan_results);
void ieee80211_sched_scan_stopped_work(struct work_struct *work)
void ieee80211_sched_scan_end(struct ieee80211_local *local)
{
struct ieee80211_local *local =
container_of(work, struct ieee80211_local,
sched_scan_stopped_work);
mutex_lock(&local->mtx);
if (!rcu_access_pointer(local->sched_scan_sdata)) {
@ -1099,6 +1095,15 @@ void ieee80211_sched_scan_stopped_work(struct work_struct *work)
cfg80211_sched_scan_stopped(local->hw.wiphy);
}
void ieee80211_sched_scan_stopped_work(struct work_struct *work)
{
struct ieee80211_local *local =
container_of(work, struct ieee80211_local,
sched_scan_stopped_work);
ieee80211_sched_scan_end(local);
}
void ieee80211_sched_scan_stopped(struct ieee80211_hw *hw)
{
struct ieee80211_local *local = hw_to_local(hw);