[PATCH] rt2x00: make rt2x00lib_stop_link_tuner() reentrant with link_tuner work

Calling cancel_delayed_work_sync() unconditionally won't hurt
and it will avoid race conditions when another CPU is already
executing link_tuner work.

Signed-off-by: Modestas Vainius <modestas@vainius.eu>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/rt2x00/rt2x00dev.c b/drivers/net/wireless/rt2x00/rt2x00dev.c
index f8f7e6e..e8c91fb 100644 (file)
--- a/drivers/net/wireless/rt2x00/rt2x00dev.c
+++ b/drivers/net/wireless/rt2x00/rt2x00dev.c
@@ -80,8 +80,7 @@ static void rt2x00lib_start_link_tuner(struct rt2x00_dev *rt2x00dev)
 
 static void rt2x00lib_stop_link_tuner(struct rt2x00_dev *rt2x00dev)
 {
-       if (delayed_work_pending(&rt2x00dev->link.work))
-               cancel_rearming_delayed_work(&rt2x00dev->link.work);
+       cancel_delayed_work_sync(&rt2x00dev->link.work);
 }
 
 void rt2x00lib_reset_link_tuner(struct rt2x00_dev *rt2x00dev)