From: Sean Wang <sean.wang@xxxxxxxxxxxx>
If the device is MMIO-based, we must ensure all TxD/TxP on the host
memory all being consumed by the device prior to safely switching to
fw_own state.
Fixes: ec7bd7b4a9c0 ("mt76: connac: check wake refcount in mcu_fw_pmctrl")
Reviewed-by: Lorenzo Bianconi <lorenzo@xxxxxxxxxx>
Signed-off-by: Sean Wang <sean.wang@xxxxxxxxxxxx>
---
drivers/net/wireless/mediatek/mt76/mt76_connac.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac.h b/drivers/net/wireless/mediatek/mt76/mt76_connac.h
index 2b1150bf8d3d..a588d2c39870 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76_connac.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76_connac.h
@@ -133,8 +133,12 @@ mt76_connac_pm_unref(struct mt76_connac_pm *pm)
static inline bool
mt76_connac_skip_fw_pmctrl(struct mt76_phy *phy, struct mt76_connac_pm *pm)
{
+ struct mt76_dev *dev = phy->dev;
bool ret;
+ if (dev->token_count)
+ return true;
+
spin_lock_bh(&pm->wake.lock);
ret = pm->wake.count || test_and_set_bit(MT76_STATE_PM, &phy->state);
spin_unlock_bh(&pm->wake.lock);
--
2.25.1
