netdev - [PATCH v2] net: usb: r8152: fix transmit queue timeout

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Message-Id: <20260116023725.8095-1-insyelu@gmail.com>
Date: Fri, 16 Jan 2026 10:37:25 +0800
From: insyelu <insyelu@...il.com>
To: andrew+netdev@...n.ch,
	davem@...emloft.net,
	nic_swsd@...ltek.com,
	tiwai@...e.de
Cc: hayeswang@...ltek.com,
	linux-usb@...r.kernel.org,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	insyelu <insyelu@...il.com>
Subject: [PATCH v2] net: usb: r8152: fix transmit queue timeout

When the TX queue length reaches the threshold, the netdev watchdog
immediately detects a TX queue timeout.

This patch updates the trans_start timestamp of the transmit queue
on every asynchronous USB URB submission along the transmit path,
ensuring that the network watchdog accurately reflects ongoing
transmission activity.

Signed-off-by: insyelu <insyelu@...il.com>
---
v2: Update the transmit timestamp when submitting the USB URB.
---
 drivers/net/usb/r8152.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index fa5192583860..880b59ed5422 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -2449,6 +2449,8 @@ static int r8152_tx_agg_fill(struct r8152 *tp, struct tx_agg *agg)
 	ret = usb_submit_urb(agg->urb, GFP_ATOMIC);
 	if (ret < 0)
 		usb_autopm_put_interface_async(tp->intf);
+	else
+		netif_trans_update(tp->netdev);
 
 out_tx_fill:
 	return ret;
-- 
2.34.1