linux-kernel - [PATCH AUTOSEL 6.12 061/486] wifi: mt76: mt7996: fix SER reset trigger on WED reset

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Message-Id: <20250505223922.2682012-61-sashal@kernel.org>
Date: Mon,  5 May 2025 18:32:17 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Rex Lu <rex.lu@...iatek.com>,
	Felix Fietkau <nbd@....name>,
	Sasha Levin <sashal@...nel.org>,
	lorenzo@...nel.org,
	ryder.lee@...iatek.com,
	matthias.bgg@...il.com,
	angelogioacchino.delregno@...labora.com,
	chui-hao.chiu@...iatek.com,
	shayne.chen@...iatek.com,
	razvan.grigore@...pirebyte.ro,
	wiagn233@...look.com,
	linux-wireless@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org
Subject: [PATCH AUTOSEL 6.12 061/486] wifi: mt76: mt7996: fix SER reset trigger on WED reset

From: Rex Lu <rex.lu@...iatek.com>

[ Upstream commit 8d38abdf6c182225c5c0a81451fa51b7b36a635d ]

The firmware needs a specific trigger when WED is being reset due to an
ethernet reset condition. This helps prevent further L1 SER failure.

Signed-off-by: Rex Lu <rex.lu@...iatek.com>
Link: https://patch.msgid.link/20250311103646.43346-2-nbd@nbd.name
Signed-off-by: Felix Fietkau <nbd@....name>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/wireless/mediatek/mt76/mt7996/mcu.h  | 3 ++-
 drivers/net/wireless/mediatek/mt76/mt7996/mmio.c | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.h b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.h
index 43468bcaffc6d..a75e1c9435bb0 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.h
@@ -908,7 +908,8 @@ enum {
 	UNI_CMD_SER_SET_RECOVER_L3_TX_DISABLE,
 	UNI_CMD_SER_SET_RECOVER_L3_BF,
 	UNI_CMD_SER_SET_RECOVER_L4_MDP,
-	UNI_CMD_SER_SET_RECOVER_FULL,
+	UNI_CMD_SER_SET_RECOVER_FROM_ETH,
+	UNI_CMD_SER_SET_RECOVER_FULL = 8,
 	UNI_CMD_SER_SET_SYSTEM_ASSERT,
 	/* action */
 	UNI_CMD_SER_ENABLE = 1,
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c b/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c
index 442f72450352b..b6209ed1cfe01 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c
@@ -281,7 +281,7 @@ static int mt7996_mmio_wed_reset(struct mtk_wed_device *wed)
 	if (test_and_set_bit(MT76_STATE_WED_RESET, &mphy->state))
 		return -EBUSY;
 
-	ret = mt7996_mcu_set_ser(dev, UNI_CMD_SER_TRIGGER, UNI_CMD_SER_SET_RECOVER_L1,
+	ret = mt7996_mcu_set_ser(dev, UNI_CMD_SER_TRIGGER, UNI_CMD_SER_SET_RECOVER_FROM_ETH,
 				 mphy->band_idx);
 	if (ret)
 		goto out;
-- 
2.39.5