netdev - Re: atl1 64-bit => 32-bit DMA borkage (reproducible, bisected)

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Message-ID: <20080425195743.2bfe66ee@osprey.hogchain.net>
Date:	Fri, 25 Apr 2008 19:57:43 -0500
From:	Jay Cliburn <jacliburn@...lsouth.net>
To:	Alexey Dobriyan <adobriyan@...il.com>
Cc:	Jay Cliburn <jacliburn@...lsouth.net>,
	Luca Tettamanti <kronos.it@...il.com>,
	Chris Snook <csnook@...hat.com>, Jeff Garzik <jeff@...zik.org>,
	Pekka Enberg <penberg@...helsinki.fi>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	Christoph Lameter <clameter@....com>, torvalds@...l.org
Subject: Re: atl1 64-bit => 32-bit DMA borkage (reproducible, bisected)

On Mon, 21 Apr 2008 21:08:21 -0500
Jay Cliburn <jacliburn@...lsouth.net> wrote:

> 
> Alexey, can you please try this (very minimally tested) patch?

Alexey, have you found time to try this patch yet?

Thanks.

> 
> diff --git a/drivers/net/atlx/atl1.c b/drivers/net/atlx/atl1.c
> index 5586fc6..07fe5c0 100644
> --- a/drivers/net/atlx/atl1.c
> +++ b/drivers/net/atlx/atl1.c
> @@ -1115,9 +1115,6 @@ static void atl1_free_ring_resources(struct
> atl1_adapter *adapter) struct atl1_rrd_ring *rrd_ring =
> &adapter->rrd_ring; struct atl1_ring_header *ring_header =
> &adapter->ring_header; 
> -	atl1_clean_tx_ring(adapter);
> -	atl1_clean_rx_ring(adapter);
> -
>  	kfree(tpd_ring->buffer_info);
>  	pci_free_consistent(pdev, ring_header->size,
> ring_header->desc, ring_header->dma);
> @@ -3423,6 +3420,8 @@ static int atl1_set_ringparam(struct net_device
> *netdev, adapter->rrd_ring = rrd_old;
>  		adapter->tpd_ring = tpd_old;
>  		adapter->ring_header = rhdr_old;
> +		atl1_clean_tx_ring(adapter);
> +		atl1_clean_rx_ring(adapter);
>  		atl1_free_ring_resources(adapter);
>  		adapter->rfd_ring = rfd_new;
>  		adapter->rrd_ring = rrd_new;
--
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