rt2x00lib_reset_link_tuner() can be called from within
the link tuner itself. This means that it should
_not_ call rt2x00lib_stop_link_tuner() since that will
cause the thread to hang.
Reorder the things that should be done during a
link tuner reset and during a link tuner start.
Also make antenna tuning the last step of the link
tuner since it could possibly reset some statistical
information which we need for average calculation.
Signed-off-by: Ivo van Doorn <IvDoorn@xxxxxxxxx>
---
drivers/net/wireless/rt2x00/rt2x00dev.c | 49 +++++++++++++++++++------------
1 files changed, 30 insertions(+), 19 deletions(-)
diff --git a/drivers/net/wireless/rt2x00/rt2x00dev.c b/drivers/net/wireless/rt2x00/rt2x00dev.c
index 7294c75..0d51f47 100644
--- a/drivers/net/wireless/rt2x00/rt2x00dev.c
+++ b/drivers/net/wireless/rt2x00/rt2x00dev.c
@@ -61,11 +61,33 @@ EXPORT_SYMBOL_GPL(rt2x00lib_get_ring);
/*
* Link tuning handlers
*/
-static void rt2x00lib_start_link_tuner(struct rt2x00_dev *rt2x00dev)
+void rt2x00lib_reset_link_tuner(struct rt2x00_dev *rt2x00dev)
{
+ if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
+ return;
+
+ /*
+ * Reset link information.
+ * Both the currently active vgc level as well as
+ * the link tuner counter should be reset. Resetting
+ * the counter is important for devices where the
+ * device should only perform link tuning during the
+ * first minute after being enabled.
+ */
rt2x00dev->link.count = 0;
rt2x00dev->link.vgc_level = 0;
+ /*
+ * Reset the link tuner.
+ */
+ rt2x00dev->ops->lib->reset_tuner(rt2x00dev);
+}
+
+static void rt2x00lib_start_link_tuner(struct rt2x00_dev *rt2x00dev)
+{
+ /*
+ * Clear all (possibly) pre-existing quality statistics.
+ */
memset(&rt2x00dev->link.qual, 0, sizeof(rt2x00dev->link.qual));
/*
@@ -79,10 +101,7 @@ static void rt2x00lib_start_link_tuner(struct rt2x00_dev *rt2x00dev)
rt2x00dev->link.qual.rx_percentage = 50;
rt2x00dev->link.qual.tx_percentage = 50;
- /*
- * Reset the link tuner.
- */
- rt2x00dev->ops->lib->reset_tuner(rt2x00dev);
+ rt2x00lib_reset_link_tuner(rt2x00dev);
queue_delayed_work(rt2x00dev->hw->workqueue,
&rt2x00dev->link.work, LINK_TUNE_INTERVAL);
@@ -93,15 +112,6 @@ static void rt2x00lib_stop_link_tuner(struct rt2x00_dev *rt2x00dev)
cancel_delayed_work_sync(&rt2x00dev->link.work);
}
-void rt2x00lib_reset_link_tuner(struct rt2x00_dev *rt2x00dev)
-{
- if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
- return;
-
- rt2x00lib_stop_link_tuner(rt2x00dev);
- rt2x00lib_start_link_tuner(rt2x00dev);
-}
-
/*
* Ring initialization
*/
@@ -433,17 +443,18 @@ static void rt2x00lib_link_tuner(struct work_struct *work)
rt2x00dev->ops->lib->link_tuner(rt2x00dev);
/*
- * Evaluate antenna setup.
- */
- rt2x00lib_evaluate_antenna(rt2x00dev);
-
- /*
* Precalculate a portion of the link signal which is
* in based on the tx/rx success/failure counters.
*/
rt2x00lib_precalculate_link_signal(&rt2x00dev->link.qual);
/*
+ * Evaluate antenna setup, make this the last step since this could
+ * possibly reset some statistics.
+ */
+ rt2x00lib_evaluate_antenna(rt2x00dev);
+
+ /*
* Increase tuner counter, and reschedule the next link tuner run.
*/
rt2x00dev->link.count++;
--
1.5.3.2
-
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