From: Grazvydas Ignotas Date: Thu, 26 Apr 2012 20:07:44 +0000 (+0300) Subject: wl1251: fix crash on remove due to leftover work item X-Git-Tag: firefly_0821_release~7541^2~1227 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=aef49be82379e995b42648f36dd02d70f979ef2a;p=firefly-linux-kernel-4.4.55.git wl1251: fix crash on remove due to leftover work item commit 4c1bcdb5a3354b250b82a67549f57ac27a3bb85f upstream. This driver currently leaves elp_work behind when stopping, which occasionally results in data corruption because work function ends up accessing freed memory, typical symptoms of this are various worker_thread crashes. Fix it by cancelling elp_work. Signed-off-by: Grazvydas Ignotas Signed-off-by: John W. Linville Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/net/wireless/wl1251/main.c b/drivers/net/wireless/wl1251/main.c index a14a48c99cdc..de9210c102eb 100644 --- a/drivers/net/wireless/wl1251/main.c +++ b/drivers/net/wireless/wl1251/main.c @@ -479,6 +479,7 @@ static void wl1251_op_stop(struct ieee80211_hw *hw) cancel_work_sync(&wl->irq_work); cancel_work_sync(&wl->tx_work); cancel_work_sync(&wl->filter_work); + cancel_delayed_work_sync(&wl->elp_work); mutex_lock(&wl->mutex);