6.1-stable review patch. If anyone has any objections, please let me know.
------------------
From: Johannes Berg <johannes.berg@xxxxxxxxx>
[ Upstream commit eadfb54756aea5610d8d0a467f66305f777c85dd ]
This also has the wiphy locked here then. We need to use
the _locked version of cfg80211_sched_scan_stopped() now,
which also fixes an old deadlock there.
Fixes: a05829a7222e ("cfg80211: avoid holding the RTNL when calling the driver")
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
net/mac80211/ieee80211_i.h | 5 +++--
net/mac80211/main.c | 6 +++---
net/mac80211/scan.c | 7 ++++---
3 files changed, 10 insertions(+), 8 deletions(-)
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 2bf63908a35e9..d5dd2d9e89b48 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1438,7 +1438,7 @@ struct ieee80211_local {
int hw_scan_ies_bufsize;
struct cfg80211_scan_info scan_info;
- struct work_struct sched_scan_stopped_work;
+ struct wiphy_work sched_scan_stopped_work;
struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
struct cfg80211_sched_scan_request __rcu *sched_scan_req;
u8 scan_addr[ETH_ALEN];
@@ -1892,7 +1892,8 @@ int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
struct cfg80211_sched_scan_request *req);
int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
void ieee80211_sched_scan_end(struct ieee80211_local *local);
-void ieee80211_sched_scan_stopped_work(struct work_struct *work);
+void ieee80211_sched_scan_stopped_work(struct wiphy *wiphy,
+ struct wiphy_work *work);
/* off-channel/mgmt-tx */
void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 71c1b4603623e..6faba47b7b0ea 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -820,8 +820,8 @@ struct ieee80211_hw *ieee80211_alloc_hw_nm(size_t priv_data_len,
ieee80211_dynamic_ps_disable_work);
timer_setup(&local->dynamic_ps_timer, ieee80211_dynamic_ps_timer, 0);
- INIT_WORK(&local->sched_scan_stopped_work,
- ieee80211_sched_scan_stopped_work);
+ wiphy_work_init(&local->sched_scan_stopped_work,
+ ieee80211_sched_scan_stopped_work);
spin_lock_init(&local->ack_status_lock);
idr_init(&local->ack_status_frames);
@@ -1470,13 +1470,13 @@ void ieee80211_unregister_hw(struct ieee80211_hw *hw)
wiphy_lock(local->hw.wiphy);
wiphy_delayed_work_cancel(local->hw.wiphy, &local->roc_work);
+ wiphy_work_cancel(local->hw.wiphy, &local->sched_scan_stopped_work);
wiphy_work_cancel(local->hw.wiphy, &local->radar_detected_work);
wiphy_unlock(local->hw.wiphy);
rtnl_unlock();
cancel_work_sync(&local->restart_work);
cancel_work_sync(&local->reconfig_filter);
- flush_work(&local->sched_scan_stopped_work);
ieee80211_clear_tx_pending(local);
rate_control_deinitialize(local);
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index 445b789e0e9bf..c37e2576f1c13 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -1439,10 +1439,11 @@ void ieee80211_sched_scan_end(struct ieee80211_local *local)
mutex_unlock(&local->mtx);
- cfg80211_sched_scan_stopped(local->hw.wiphy, 0);
+ cfg80211_sched_scan_stopped_locked(local->hw.wiphy, 0);
}
-void ieee80211_sched_scan_stopped_work(struct work_struct *work)
+void ieee80211_sched_scan_stopped_work(struct wiphy *wiphy,
+ struct wiphy_work *work)
{
struct ieee80211_local *local =
container_of(work, struct ieee80211_local,
@@ -1465,6 +1466,6 @@ void ieee80211_sched_scan_stopped(struct ieee80211_hw *hw)
if (local->in_reconfig)
return;
- schedule_work(&local->sched_scan_stopped_work);
+ wiphy_work_queue(hw->wiphy, &local->sched_scan_stopped_work);
}
EXPORT_SYMBOL(ieee80211_sched_scan_stopped);
--
2.42.0
