wifi: mt76: sdio: poll sta stat when device transmits data

[ Upstream commit a323e5f041dd11af5e3de19ed7ea95a97d588c11 ]

It is not meaningful to poll sta stat when there is no data traffic.
So polling sta stat when the device has transmitted data instead to save
CPU power.

That implies that it is unallowed the stat_work to work while MCU is being
initialized in the really early stage to fix the possible time to time MCU
initialization failure.

Fixes: d39b52e31aa6 ("mt76: introduce mt76_sdio module")
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/wireless/mediatek/mt76/sdio.c b/drivers/net/wireless/mediatek/mt76/sdio.c
index 574687ca93a9b59d81ef92671625a3f899e3c37c..fa54ee112b0ba7f669304f31ac8c9284f0b4e53f 100644 (file)
--- a/drivers/net/wireless/mediatek/mt76/sdio.c
+++ b/drivers/net/wireless/mediatek/mt76/sdio.c
@@ -480,7 +480,7 @@ static void mt76s_status_worker(struct mt76_worker *w)
                if (ndata_frames > 0)
                        resched = true;
 
-               if (dev->drv->tx_status_data &&
+               if (dev->drv->tx_status_data && ndata_frames > 0 &&
                    !test_and_set_bit(MT76_READING_STATS, &dev->phy.state) &&
                    !test_bit(MT76_STATE_SUSPEND, &dev->phy.state))
                        ieee80211_queue_work(dev->hw, &dev->sdio.stat_work);