Commit 4bfa2912 authored by Sean Wang's avatar Sean Wang Committed by Felix Fietkau
Browse files

mt76: connac: fw_own rely on all packet memory all being free 



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: ec7bd7b4 ("mt76: connac: check wake refcount in mcu_fw_pmctrl")
Reviewed-by: default avatarLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: default avatarSean Wang <sean.wang@mediatek.com>
Signed-off-by: default avatarFelix Fietkau <nbd@nbd.name>
parent 2c80c02a

drivers/net/wireless/mediatek/mt76/mt76_connac.h

+4 −0
Original line number Diff line number Diff line
@@ -127,8 +127,12 @@ 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);