If we are associated and scanning is performed, sw_scan_complete callback
is done after we get back to operating channel, so we do not perform
queue cal work. Fix this queue cal work from sw_scan_complete().
We have to restore gain in MT_BBP(AGC, 8) register after scanning, as
it was multiple times modified by channel switch code. So queue cal work
without any delay and reset dev->cal.low_gain to assure calibration
code will AGC gain value.
Note patch was not tested on mt76x2, but should work and be needed
fix as well.
Fixes: bbd10586f0df ("mt76x0: phy: do not run calibration during channel switch")
Signed-off-by: Stanislaw Gruszka <sgruszka@xxxxxxxxxx>
---
v1 -> v2:
only queue cal work with 0 delay an reset dev->cal.low_gain
drivers/net/wireless/mediatek/mt76/mt76x02_util.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_util.c b/drivers/net/wireless/mediatek/mt76/mt76x02_util.c
index 9f083008dbd4..747fd2c9ec45 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76x02_util.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76x02_util.c
@@ -553,6 +553,12 @@ void mt76x02_sw_scan_complete(struct ieee80211_hw *hw,
clear_bit(MT76_SCANNING, &dev->mt76.state);
if (mt76_is_mmio(dev))
tasklet_enable(&dev->pre_tbtt_tasklet);
+
+ if (vif->bss_conf.assoc) {
+ /* Restore AGC gain and resume calibration after scanning. */
+ dev->cal.low_gain = -1;
+ ieee80211_queue_delayed_work(hw, &dev->cal_work, 0);
+ }
}
EXPORT_SYMBOL_GPL(mt76x02_sw_scan_complete);
--
2.7.5
