Commit 7f2bc8ba authored by Lorenzo Bianconi's avatar Lorenzo Bianconi Committed by Felix Fietkau
Browse files

mt76: connac: introduce wake counter for fw_pmctrl synchronization 



Introduce wake counter and related spinlock in order to synchronize
tx/rx path and fw_pmctrl request.

Signed-off-by: default avatarLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: default avatarFelix Fietkau <nbd@nbd.name>
parent 7cd740f0

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

+31 −0
Original line number Diff line number Diff line
@@ -54,6 +54,11 @@ struct mt76_connac_pm { 


	struct work_struct wake_work;

	struct completion wake_cmpl;



	struct {

		spinlock_t lock;

		u32 count;

	} wake;

	struct mutex mutex;



	struct delayed_work ps_work;
@@ -85,6 +90,32 @@ void mt76_connac_power_save_sched(struct mt76_phy *phy, 
void mt76_connac_free_pending_tx_skbs(struct mt76_connac_pm *pm,

				      struct mt76_wcid *wcid);



static inline bool

mt76_connac_pm_ref(struct mt76_phy *phy, struct mt76_connac_pm *pm)

{

	bool ret = false;



	spin_lock_bh(&pm->wake.lock);

	if (test_bit(MT76_STATE_PM, &phy->state))

		goto out;



	pm->wake.count++;

	ret = true;

out:

	spin_unlock_bh(&pm->wake.lock);



	return ret;

}



static inline void

mt76_connac_pm_unref(struct mt76_connac_pm *pm)

{

	spin_lock_bh(&pm->wake.lock);

	pm->wake.count--;

	pm->last_activity = jiffies;

	spin_unlock_bh(&pm->wake.lock);

}



static inline void

mt76_connac_mutex_acquire(struct mt76_dev *dev, struct mt76_connac_pm *pm)

	__acquires(&dev->mutex)