[PATCH net-next] net: airoha: Reset BQL stopping the netdevice

[Lorenzo Bianconi]

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 at kernel.org>
---
 drivers/net/ethernet/mediatek/airoha_eth.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mediatek/airoha_eth.c b/drivers/net/ethernet/mediatek/airoha_eth.c
index 836a957aad77bec972c536567a4ee7d304ac7b52..23905f54f991fc8062542b890fbf002154676612 100644
--- a/drivers/net/ethernet/mediatek/airoha_eth.c
+++ b/drivers/net/ethernet/mediatek/airoha_eth.c
@@ -2341,7 +2341,7 @@ static int airoha_dev_stop(struct net_device *dev)
 {
 	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);
@@ -2352,6 +2352,14 @@ static int airoha_dev_stop(struct net_device *dev)
 			  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;
 }
 

---
base-commit: e60fa8ebc2af54c2f62cc4ed63b85894dabf9101
change-id: 20241017-airoha-en7581-reset-bql-45e4bd5c20d1

Best regards,
-- 
Lorenzo Bianconi <lorenzo at kernel.org>