Introduce wake counter and related spinlock in order to synchronize
tx/rx path and fw_pmctrl request.
Signed-off-by: Lorenzo Bianconi <lorenzo@xxxxxxxxxx>
---
.../net/wireless/mediatek/mt76/mt76_connac.h | 31 +++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac.h b/drivers/net/wireless/mediatek/mt76/mt76_connac.h
index 2b31c9794e92..85846eab8d7d 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76_connac.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76_connac.h
@@ -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)
--
2.30.2
