linux-kernel - Re: [PATCH net v2 2/2] r8152: reset device when tx timeout

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Message-ID: <1438085645.1787.4.camel@suse.com>
Date:	Tue, 28 Jul 2015 14:14:05 +0200
From:	Oliver Neukum <oneukum@...e.com>
To:	Hayes Wang <hayeswang@...ltek.com>
Cc:	netdev@...r.kernel.org, nic_swsd@...ltek.com,
	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [PATCH net v2 2/2] r8152: reset device when tx timeout

On Tue, 2015-07-28 at 20:08 +0800, Hayes Wang wrote:
>  static void rtl8152_tx_timeout(struct net_device *netdev)
>  {
>         struct r8152 *tp = netdev_priv(netdev);
> -       int i;
>  
>         netif_warn(tp, tx_err, netdev, "Tx timeout\n");
> -       for (i = 0; i < RTL8152_MAX_TX; i++)
> -               usb_unlink_urb(tp->tx_info[i].urb);
> +
> +       usb_queue_reset_device(tp->intf);
> +       cancel_delayed_work(&tp->schedule);

Sorry to bother you again, but this looks wrong.
You want to cancel first. There is no point in
running any work before the reset is done. It will
undo any progress anyway.

	Regards
		Oliver


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