From: Paasikivi Teemu.3 (EXT-Ixonos/Tampere) <ext-teemu.3.paasikivi@xxxxxxxxx> As scan_work is queued from work_work it needs to be checked if scan has been started during execution of work_work. Otherwise, when hw scan is used, the stack gets error about hw being busy with ongoing scan. This causes the stack to abort scan without notifying the driver about it. This leads to a situation where the hw is scanning and the stack thinks it's not. Then when the scan finishes, the stack will complain by warnings. Signed-off-by: Teemu Paasikivi <ext-teemu.3.paasikivi@xxxxxxxxx> Reviewed-by: Johannes Berg <johannes@xxxxxxxxxxxxxxxx> --- net/mac80211/work.c | 7 ++++++- 1 files changed, 6 insertions(+), 1 deletions(-) diff --git a/net/mac80211/work.c b/net/mac80211/work.c index 1e1ea30..7bd8670 100644 --- a/net/mac80211/work.c +++ b/net/mac80211/work.c @@ -919,11 +919,16 @@ static void ieee80211_work_work(struct work_struct *work) run_again(local, jiffies + HZ/2); } - if (list_empty(&local->work_list) && local->scan_req) + mutex_lock(&local->scan_mtx); + + if (list_empty(&local->work_list) && local->scan_req && + !local->scanning) ieee80211_queue_delayed_work(&local->hw, &local->scan_work, round_jiffies_relative(0)); + mutex_unlock(&local->scan_mtx); + mutex_unlock(&local->work_mtx); ieee80211_recalc_idle(local); -- 1.5.6.3 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
