Commit 881ed54e authored by Daniel Wagner's avatar Daniel Wagner Committed by Kalle Valo

ath10k: use complete() instead complete_all()

There is only one waiter for the completion, therefore there
is no need to use complete_all(). Let's make that clear by
using complete() instead of complete_all().

The usage pattern of the completion is:

waiter context                          waker context

scan.started
------------

ath10k_start_scan()
  lockdep_assert_held(conf_mutex)
  auth10k_wmi_start_scan()
  wait_for_completion_timeout(scan.started)

					ath10k_wmi_event_scan_start_failed()
					  complete(scan.started)

					ath10k_wmi_event_scan_started()
					  complete(scan.started)

scan.completed
--------------

ath10k_scan_stop()
  lockdep_assert_held(conf_mutex)
  ath10k_wmi_stop_scan()
  wait_for_completion_timeout(scan.completed)

					__ath10k_scan_finish()
					  complete(scan.completed)

scan.on_channel
---------------

ath10k_remain_on_channel()
  mutex_lock(conf_mutex)
  ath10k_start_scan()
  wait_for_completion_timeout(scan.on_channel)

					ath10k_wmi_event_scan_foreign_chan()
					  complete(scan.on_channel)

offchan_tx_completed
--------------------

ath10k_offchan_tx_work()
  mutex_lock(conf_mutex)
  reinit_completion(offchan_tx_completed)
  wait_for_completion_timeout(offchan_tx_completed)

					ath10k_report_offchain_tx()
					  complete(offchan_tx_completed)

install_key_done
----------------
ath10k_install_key()
  lockep_assert_held(conf_mutex)
  reinit_completion(install_key_done)
  wait_for_completion_timeout(install_key_done)

				        ath10k_htt_t2h_msg_handler()
					  complete(install_key_done)

vdev_setup_done
---------------

ath10k_monitor_vdev_start()
  lockdep_assert_held(conf_mutex)
   reinit_completion(vdev_setup_done)
  ath10k_vdev_setup_sync()
    wait_for_completion_timeout(vdev_setup_done)

					ath10k_wmi_event_vdev_start_resp()
					  complete(vdev_setup_done)

ath10k_monitor_vdev_stop()
  lockdep_assert_held(conf_mutex)
  reinit_completion(vdev_setup_done()
  ath10k_vdev_setup_sync()
    wait_for_completion_timeout(vdev_setup_done)

					ath10k_wmi_event_vdev_stopped()
					 complete(vdev_setup_done)

thermal.wmi_sync
----------------
ath10k_thermal_show_temp()
  mutex_lock(conf_mutex)
  reinit_completion(thermal.wmi_sync)
  wait_for_completion_timeout(thermal.wmi_sync)

					ath10k_thermal_event_temperature()
					  complete(thermal.wmi_sync)

bss_survey_done
---------------
ath10k_mac_update_bss_chan_survey
  lockdep_assert_held(conf_mutex)
  reinit_completion(bss_survey_done)
  wait_for_completion_timeout(bss_survey_done)

					ath10k_wmi_event_pdev_bss_chan_info()
					  complete(bss_survey_done)

All complete() calls happen while the conf_mutex is taken. That means
at max one waiter is possible.
Signed-off-by: default avatarDaniel Wagner <daniel.wagner@bmw-carit.de>
Signed-off-by: default avatarKalle Valo <kvalo@qca.qualcomm.com>
parent e4fd726f
...@@ -1501,14 +1501,14 @@ static void ath10k_core_restart(struct work_struct *work) ...@@ -1501,14 +1501,14 @@ static void ath10k_core_restart(struct work_struct *work)
ieee80211_stop_queues(ar->hw); ieee80211_stop_queues(ar->hw);
ath10k_drain_tx(ar); ath10k_drain_tx(ar);
complete_all(&ar->scan.started); complete(&ar->scan.started);
complete_all(&ar->scan.completed); complete(&ar->scan.completed);
complete_all(&ar->scan.on_channel); complete(&ar->scan.on_channel);
complete_all(&ar->offchan_tx_completed); complete(&ar->offchan_tx_completed);
complete_all(&ar->install_key_done); complete(&ar->install_key_done);
complete_all(&ar->vdev_setup_done); complete(&ar->vdev_setup_done);
complete_all(&ar->thermal.wmi_sync); complete(&ar->thermal.wmi_sync);
complete_all(&ar->bss_survey_done); complete(&ar->bss_survey_done);
wake_up(&ar->htt.empty_tx_wq); wake_up(&ar->htt.empty_tx_wq);
wake_up(&ar->wmi.tx_credits_wq); wake_up(&ar->wmi.tx_credits_wq);
wake_up(&ar->peer_mapping_wq); wake_up(&ar->peer_mapping_wq);
......
...@@ -3914,7 +3914,7 @@ void __ath10k_scan_finish(struct ath10k *ar) ...@@ -3914,7 +3914,7 @@ void __ath10k_scan_finish(struct ath10k *ar)
ar->scan.roc_freq = 0; ar->scan.roc_freq = 0;
ath10k_offchan_tx_purge(ar); ath10k_offchan_tx_purge(ar);
cancel_delayed_work(&ar->scan.timeout); cancel_delayed_work(&ar->scan.timeout);
complete_all(&ar->scan.completed); complete(&ar->scan.completed);
break; break;
} }
} }
......
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