From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH net-next 1/4] via-rhine: commit receive buffer address
 before descriptor status update.
Date: Tue, 07 Apr 2015 15:52:09 -0400 (EDT)
Message-ID: <20150407.155209.47396464487922345.davem@davemloft.net>
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From: Francois Romieu <romieu@fr.zoreil.com>
Date: Mon,  6 Apr 2015 20:01:49 +0200

> Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
> ---
>  drivers/net/ethernet/via/via-rhine.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/net/ethernet/via/via-rhine.c b/drivers/net/ethernet/via/via-rhine.c
> index a191afc..00fea3d 100644
> --- a/drivers/net/ethernet/via/via-rhine.c
> +++ b/drivers/net/ethernet/via/via-rhine.c
> @@ -2063,6 +2063,7 @@ static int rhine_rx(struct net_device *dev, int limit)
>  				break;
>  			}
>  			rp->rx_ring[entry].addr = cpu_to_le32(rp->rx_skbuff_dma[entry]);
> +			wmb();

dma_wmb() perhaps?  I think this is exactly the situation that interface was
added for.