diff options
Diffstat (limited to 'package/mac80211/patches/721-mac80211-fix-scan-race.patch')
| -rw-r--r-- | package/mac80211/patches/721-mac80211-fix-scan-race.patch | 141 |
1 files changed, 0 insertions, 141 deletions
diff --git a/package/mac80211/patches/721-mac80211-fix-scan-race.patch b/package/mac80211/patches/721-mac80211-fix-scan-race.patch deleted file mode 100644 index efc01b1761..0000000000 --- a/package/mac80211/patches/721-mac80211-fix-scan-race.patch +++ /dev/null @@ -1,141 +0,0 @@ -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); - } |