[PATCH 9/12] rt2x00: Stop link tuning when radio is down

[Ivo van Doorn <ivdoorn@gmail.com>]

As pointed out by Modestas Vainius the link tuner
could continue working while the radio is already
down. This because at the start of disable_radio
the ENABLED_RADIO flag is cleared and causes the
toggle_rx to skip the stop_link_tuner() call.
This will add a check to the start of the link tuner
which will automatically stop the link tuner when the
radio is disabled.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
---
 drivers/net/wireless/rt2x00/rt2x00dev.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/drivers/net/wireless/rt2x00/rt2x00dev.c b/drivers/net/wireless/rt2x00/rt2x00dev.c
index e8c91fb..92b7252 100644
--- a/drivers/net/wireless/rt2x00/rt2x00dev.c
+++ b/drivers/net/wireless/rt2x00/rt2x00dev.c
@@ -237,6 +237,13 @@ static void rt2x00lib_link_tuner(struct work_struct *work)
 	    container_of(work, struct rt2x00_dev, link.work.work);
 
 	/*
+	 * When the radio is shutting down we should
+	 * immediately cease all link tuning.
+	 */
+	if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
+		return;
+
+	/*
 	 * Update statistics.
 	 */
 	rt2x00dev->ops->lib->link_stats(rt2x00dev);
-- 
1.5.3.2