net: usb: r8152: fix transmit queue timeout

[ Upstream commit 833dcd7 ]

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: Mingj Ye <insyelu@gmail.com>
Reviewed-by: Hayes Wang <hayeswang@realtek.com>
Link: https://patch.msgid.link/20260120015949.84996-1-insyelu@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

Author: Mingj Ye

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;