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wl1251: fix crash on remove due to leftover work item

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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.

Cc: stable@vger.kernel.org # v2.6.37+
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Grazvydas Ignotas 2012-04-26 23:07:44 +03:00 committed by John W. Linville
parent 328c32f0f8
commit 4c1bcdb5a3
1 changed files with 1 additions and 0 deletions
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drivers/net/wireless/wl1251/main.c
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@ -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);