Subject: Re: [PATCH v3 net-next] net: stmmac: fix dma operation mode config for older versions

From: Corentin Labbe <[email-masked]>
Date: Wed, 22 Mar 2017 13:37:21 +0100

On Wed, Mar 22, 2017 at 11:56:05AM +0000, Joao Pinto wrote:
> The dma operation mode configuration routine was wrongly moved to a
> function (stmmac_mtl_configuration) that is only executed if the
> core version is >= 4.00.
> 
> Fixes: 6deee2221e11 ("net: stmmac: prepare dma op mode config for multiple queues")
> Reported-by: Corentin Labbe <[email-masked]>
> Reviewed-by: Thierry Reding <[email-masked]>
> Signed-off-by: Joao Pinto <[email-masked]>
> ---
> changes v2->v3:
> - Commit ID and title should be under a 'Fixes' tag
> changes v1->v2:
> - commit id did not have 12 digits
> 
>  drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> index d3a2151..225a3a3 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> @@ -1945,9 +1945,6 @@ static void stmmac_mtl_configuration(struct stmmac_priv *priv)
>  	/* Enable MAC RX Queues */
>  	if (rx_queues_count > 1 && priv->hw->mac->rx_queue_enable)
>  		stmmac_mac_enable_rx_queues(priv);
> -
> -	/* Set the HW DMA mode and the COE */
> -	stmmac_dma_operation_mode(priv);
>  }
>  
>  /**
> @@ -2014,6 +2011,9 @@ static int stmmac_hw_setup(struct net_device *dev, bool init_ptp)
>  	else
>  		stmmac_set_mac(priv->ioaddr, true);
>  
> +	/* Set the HW DMA mode and the COE */
> +	stmmac_dma_operation_mode(priv);
> +
>  	stmmac_mmc_setup(priv);
>  
>  	if (init_ptp) {
> -- 
> 2.9.3
> 

Tested-by: Corentin Labbe <[email-masked]>

Fix one of the reported problem on dwmac-sunxi and dwmac-sun8i
Regards