You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
141 lines
4.3 KiB
141 lines
4.3 KiB
Index: compat-wireless-2011-02-25/net/mac80211/scan.c
|
|
===================================================================
|
|
--- compat-wireless-2011-02-25.orig/net/mac80211/scan.c 2011-03-07 14:43:55.695666042 +0100
|
|
+++ compat-wireless-2011-02-25/net/mac80211/scan.c 2011-03-07 14:43:57.594439631 +0100
|
|
@@ -258,10 +258,12 @@ static bool ieee80211_prep_hw_scan(struc
|
|
return true;
|
|
}
|
|
|
|
-static bool __ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted,
|
|
+static void __ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted,
|
|
bool was_hw_scan)
|
|
{
|
|
struct ieee80211_local *local = hw_to_local(hw);
|
|
+ bool on_oper_chan;
|
|
+ bool enable_beacons = false;
|
|
|
|
lockdep_assert_held(&local->mtx);
|
|
|
|
@@ -275,12 +277,12 @@ static bool __ieee80211_scan_completed(s
|
|
aborted = true;
|
|
|
|
if (WARN_ON(!local->scan_req))
|
|
- return false;
|
|
+ return;
|
|
|
|
if (was_hw_scan && !aborted && ieee80211_prep_hw_scan(local)) {
|
|
int rc = drv_hw_scan(local, local->scan_sdata, local->hw_scan_req);
|
|
if (rc == 0)
|
|
- return false;
|
|
+ return;
|
|
}
|
|
|
|
kfree(local->hw_scan_req);
|
|
@@ -294,26 +296,13 @@ static bool __ieee80211_scan_completed(s
|
|
local->scanning = 0;
|
|
local->scan_channel = NULL;
|
|
|
|
- return true;
|
|
-}
|
|
-
|
|
-static void __ieee80211_scan_completed_finish(struct ieee80211_hw *hw,
|
|
- bool was_hw_scan)
|
|
-{
|
|
- struct ieee80211_local *local = hw_to_local(hw);
|
|
- bool on_oper_chan;
|
|
- bool enable_beacons = false;
|
|
-
|
|
- mutex_lock(&local->mtx);
|
|
on_oper_chan = ieee80211_cfg_on_oper_channel(local);
|
|
|
|
WARN_ON(local->scanning & (SCAN_SW_SCANNING | SCAN_HW_SCANNING));
|
|
|
|
- if (was_hw_scan || !on_oper_chan) {
|
|
- if (WARN_ON(local->scan_channel))
|
|
- local->scan_channel = NULL;
|
|
+ if (was_hw_scan || !on_oper_chan)
|
|
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
|
|
- } else
|
|
+ else
|
|
/* Set power back to normal operating levels. */
|
|
ieee80211_hw_config(local, 0);
|
|
|
|
@@ -331,7 +320,6 @@ static void __ieee80211_scan_completed_f
|
|
}
|
|
|
|
ieee80211_recalc_idle(local);
|
|
- mutex_unlock(&local->mtx);
|
|
|
|
ieee80211_mlme_notify_scan_completed(local);
|
|
ieee80211_ibss_notify_scan_completed(local);
|
|
@@ -686,12 +674,14 @@ void ieee80211_scan_work(struct work_str
|
|
{
|
|
struct ieee80211_local *local =
|
|
container_of(work, struct ieee80211_local, scan_work.work);
|
|
- struct ieee80211_sub_if_data *sdata = local->scan_sdata;
|
|
+ struct ieee80211_sub_if_data *sdata;
|
|
unsigned long next_delay = 0;
|
|
- bool aborted, hw_scan, finish;
|
|
+ bool aborted, hw_scan;
|
|
|
|
mutex_lock(&local->mtx);
|
|
|
|
+ sdata = local->scan_sdata;
|
|
+
|
|
if (test_and_clear_bit(SCAN_COMPLETED, &local->scanning)) {
|
|
aborted = test_and_clear_bit(SCAN_ABORTED, &local->scanning);
|
|
goto out_complete;
|
|
@@ -755,17 +745,11 @@ void ieee80211_scan_work(struct work_str
|
|
} while (next_delay == 0);
|
|
|
|
ieee80211_queue_delayed_work(&local->hw, &local->scan_work, next_delay);
|
|
- mutex_unlock(&local->mtx);
|
|
- return;
|
|
+ goto out;
|
|
|
|
out_complete:
|
|
hw_scan = test_bit(SCAN_HW_SCANNING, &local->scanning);
|
|
- finish = __ieee80211_scan_completed(&local->hw, aborted, hw_scan);
|
|
- mutex_unlock(&local->mtx);
|
|
- if (finish)
|
|
- __ieee80211_scan_completed_finish(&local->hw, hw_scan);
|
|
- return;
|
|
-
|
|
+ __ieee80211_scan_completed(&local->hw, aborted, hw_scan);
|
|
out:
|
|
mutex_unlock(&local->mtx);
|
|
}
|
|
@@ -835,7 +819,6 @@ int ieee80211_request_internal_scan(stru
|
|
void ieee80211_scan_cancel(struct ieee80211_local *local)
|
|
{
|
|
bool abortscan;
|
|
- bool finish = false;
|
|
|
|
/*
|
|
* We are only canceling software scan, or deferred scan that was not
|
|
@@ -855,14 +838,17 @@ void ieee80211_scan_cancel(struct ieee80
|
|
|
|
mutex_lock(&local->mtx);
|
|
abortscan = local->scan_req && !test_bit(SCAN_HW_SCANNING, &local->scanning);
|
|
- if (abortscan)
|
|
- finish = __ieee80211_scan_completed(&local->hw, true, false);
|
|
- mutex_unlock(&local->mtx);
|
|
-
|
|
if (abortscan) {
|
|
- /* The scan is canceled, but stop work from being pending */
|
|
- cancel_delayed_work_sync(&local->scan_work);
|
|
+ /*
|
|
+ * The scan is canceled, but stop work from being pending.
|
|
+ *
|
|
+ * If the work is currently running, it must be blocked on
|
|
+ * the mutex, but we'll set scan_sdata = NULL and it'll
|
|
+ * simply exit once it acquires the mutex.
|
|
+ */
|
|
+ cancel_delayed_work(&local->scan_work);
|
|
+ /* and clean up */
|
|
+ __ieee80211_scan_completed(&local->hw, true, false);
|
|
}
|
|
- if (finish)
|
|
- __ieee80211_scan_completed_finish(&local->hw, false);
|
|
+ mutex_unlock(&local->mtx);
|
|
}
|
|
|