From c9f947769b77c8e8f318bfc8a0777e5d20c44d8d Mon Sep 17 00:00:00 2001
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: Thu, 17 Oct 2024 16:01:41 +0200
Subject: [PATCH] net: airoha: Reset BQL stopping the netdevice

Run airoha_qdma_cleanup_tx_queue() in ndo_stop callback in order to
unmap pending skbs. Moreover, reset BQL txq state stopping the netdevice,

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Reviewed-by: Hariprasad Kelam <hkelam@marvell.com>
Message-ID: <20241017-airoha-en7581-reset-bql-v1-1-08c0c9888de5@kernel.org>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
---
 drivers/net/ethernet/mediatek/airoha_eth.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

--- a/drivers/net/ethernet/mediatek/airoha_eth.c
+++ b/drivers/net/ethernet/mediatek/airoha_eth.c
@@ -2468,7 +2468,7 @@ static int airoha_dev_stop(struct net_de
 {
 	struct airoha_gdm_port *port = netdev_priv(dev);
 	struct airoha_qdma *qdma = port->qdma;
-	int err;
+	int i, err;
 
 	netif_tx_disable(dev);
 	err = airoha_set_gdm_ports(qdma->eth, false);
@@ -2479,6 +2479,14 @@ static int airoha_dev_stop(struct net_de
 			  GLOBAL_CFG_TX_DMA_EN_MASK |
 			  GLOBAL_CFG_RX_DMA_EN_MASK);
 
+	for (i = 0; i < ARRAY_SIZE(qdma->q_tx); i++) {
+		if (!qdma->q_tx[i].ndesc)
+			continue;
+
+		airoha_qdma_cleanup_tx_queue(&qdma->q_tx[i]);
+		netdev_tx_reset_subqueue(dev, i);
+	}
+
 	return 0;
 }
 
