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From: <sean.wang@mediatek.com>
To: <nbd@nbd.name>, <lorenzo.bianconi@redhat.com>
Cc: <sean.wang@mediatek.com>, <Soul.Huang@mediatek.com>,
	<YN.Chen@mediatek.com>, <Leon.Yen@mediatek.com>,
	<Eric-SY.Chang@mediatek.com>, <Deren.Wu@mediatek.com>,
	<km.lin@mediatek.com>, <robin.chiu@mediatek.com>,
	<ch.yeh@mediatek.com>, <posh.sun@mediatek.com>,
	<Eric.Liang@mediatek.com>, <Stella.Chang@mediatek.com>,
	<jemele@google.com>, <yenlinlai@google.com>,
	<linux-wireless@vger.kernel.org>,
	<linux-mediatek@lists.infradead.org>
Subject: [PATCH 3/9] mt76: connac: fw_own rely on all packet memory all being free
Date: Mon, 10 May 2021 23:14:51 +0800	[thread overview]
Message-ID: <1620659697-12048-3-git-send-email-sean.wang@mediatek.com> (raw)
In-Reply-To: <1620659697-12048-1-git-send-email-sean.wang@mediatek.com>

From: Sean Wang <sean.wang@mediatek.com>

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@kernel.org>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
---
 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


WARNING: multiple messages have this Message-ID (diff)
From: <sean.wang@mediatek.com>
To: <nbd@nbd.name>, <lorenzo.bianconi@redhat.com>
Cc: <sean.wang@mediatek.com>, <Soul.Huang@mediatek.com>,
	<YN.Chen@mediatek.com>, <Leon.Yen@mediatek.com>,
	<Eric-SY.Chang@mediatek.com>, <Deren.Wu@mediatek.com>,
	<km.lin@mediatek.com>,  <robin.chiu@mediatek.com>,
	<ch.yeh@mediatek.com>, <posh.sun@mediatek.com>,
	<Eric.Liang@mediatek.com>, <Stella.Chang@mediatek.com>,
	<jemele@google.com>, <yenlinlai@google.com>,
	<linux-wireless@vger.kernel.org>,
	<linux-mediatek@lists.infradead.org>
Subject: [PATCH 3/9] mt76: connac: fw_own rely on all packet memory all being free
Date: Mon, 10 May 2021 23:14:51 +0800	[thread overview]
Message-ID: <1620659697-12048-3-git-send-email-sean.wang@mediatek.com> (raw)
In-Reply-To: <1620659697-12048-1-git-send-email-sean.wang@mediatek.com>

From: Sean Wang <sean.wang@mediatek.com>

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@kernel.org>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
---
 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
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  parent reply	other threads:[~2021-05-10 15:16 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-10 15:14 [PATCH 1/9] mt76: mt7921: fix mt7921_wfsys_reset sequence sean.wang
2021-05-10 15:14 ` sean.wang
2021-05-10 15:14 ` [PATCH 2/9] mt76: mt7921: Don't alter Rx path classifier sean.wang
2021-05-10 15:14   ` sean.wang
2021-05-10 15:14 ` sean.wang [this message]
2021-05-10 15:14   ` [PATCH 3/9] mt76: connac: fw_own rely on all packet memory all being free sean.wang
2021-05-10 15:14 ` [PATCH 4/9] mt76: mt7921: enable deep sleep at runtime sean.wang
2021-05-10 15:14   ` sean.wang
2021-05-28 12:51   ` Felix Fietkau
2021-05-28 12:51     ` Felix Fietkau
2021-05-10 15:14 ` [PATCH 5/9] mt76: mt7921: add deep sleep control to runtime-pm knob sean.wang
2021-05-10 15:14   ` sean.wang
2021-05-10 15:14 ` [PATCH 6/9] mt76: connac: fix WoW with disconnetion and bitmap pattern sean.wang
2021-05-10 15:14   ` sean.wang
2021-05-10 15:14 ` [PATCH 7/9] mt76: mt7921: consider the invalid value for to_rssi sean.wang
2021-05-10 15:14   ` sean.wang
2021-05-10 15:14 ` [PATCH 8/9] mt76: connac: add bss color support for sta mode sean.wang
2021-05-10 15:14 ` [PATCH 9/9] mt76: mt7921: add back connection monitor support sean.wang
2021-05-10 15:14   ` sean.wang
2021-05-13  7:45   ` Felix Fietkau
2021-05-13  7:45     ` Felix Fietkau

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