netdev - Re: atl1: WARNING at net/sched/sch

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Date:	Tue, 16 Sep 2008 02:45:22 +0400
From:	Alexey Dobriyan <adobriyan@...il.com>
To:	Jay Cliburn <jacliburn@...lsouth.net>
Cc:	csnook@...hat.com, netdev@...r.kernel.org
Subject: Re: atl1: WARNING at net/sched/sch_generic.c:221

On Sun, Sep 14, 2008 at 06:17:14PM -0500, Jay Cliburn wrote:
> On Thu, 21 Aug 2008 15:58:49 +0400
> adobriyan@...il.com wrote:
> 
> > This message happens more or less every reboot, sometimes cable
> > unplug/plug is needed to restore connectivity, otherwise card is
> > working fine.
> > 
> > 
> > [   22.570010] eth1: link up, 100Mbps, full-duplex, lpa 0x45E1
> > [   26.570011] NET: Registered protocol family 10
> > [   37.551934] eth0: no IPv6 routers present
> > 
> > 	[rebooted box which is directly connected to a box with atl1]
> > 
> > [ 2078.740004] atl1 0000:03:00.0: eth0 link is down
> > [ 2080.790004] atl1 0000:03:00.0: eth0 link is up 1000 Mbps full
> > duplex [ 2086.049998] NETDEV WATCHDOG: eth0 (atl1): transmit timed out
> > [ 2086.050004] ------------[ cut here ]------------
> > [ 2086.050004] WARNING: at net/sched/sch_generic.c:221
> [...]
> 
> Alexey,
> 
> Can you please try this patch?

Seems to help (no more messages), still sometimes no networking until after
cable replug. Stay tuned.

> --- a/drivers/net/atlx/atl1.c
> +++ b/drivers/net/atlx/atl1.c
> @@ -2642,6 +2642,7 @@ static void atl1_down(struct atl1_adapter *adapter)
>  {
>  	struct net_device *netdev = adapter->netdev;
>  
> +	netif_stop_queue(netdev);
>  	del_timer_sync(&adapter->watchdog_timer);
>  	del_timer_sync(&adapter->phy_config_timer);
>  	adapter->phy_timer_pending = false;
> @@ -2655,7 +2656,6 @@ static void atl1_down(struct atl1_adapter *adapter)
>  	adapter->link_speed = SPEED_0;
>  	adapter->link_duplex = -1;
>  	netif_carrier_off(netdev);
> -	netif_stop_queue(netdev);
>  
>  	atl1_clean_tx_ring(adapter);
>  	atl1_clean_rx_ring(adapter);
> @@ -2724,6 +2724,8 @@ static int atl1_open(struct net_device *netdev)
>  	struct atl1_adapter *adapter = netdev_priv(netdev);
>  	int err;
>  
> +	netif_carrier_off(netdev);
> +
>  	/* allocate transmit descriptors */
>  	err = atl1_setup_ring_resources(adapter);
>  	if (err)
> diff --git a/drivers/net/atlx/atlx.c b/drivers/net/atlx/atlx.c
> index b3e7fcf..3cc9d10 100644
> --- a/drivers/net/atlx/atlx.c
> +++ b/drivers/net/atlx/atlx.c
> @@ -105,7 +105,6 @@ static void atlx_check_for_link(struct atlx_adapter *adapter)
>  				netdev->name);
>  			adapter->link_speed = SPEED_0;
>  			netif_carrier_off(netdev);
> -			netif_stop_queue(netdev);
>  		}
>  	}
>  	schedule_work(&adapter->link_chg_task);
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