[PATCH 2/2] net: arc_emac: disable interrupts

[Sascha Hauer]

On Mon, May 19, 2014 at 10:35:00PM +0200, Beniamino Galvani wrote:
> The driver doesn't use interrupts and Linux driver crashes when emac
> interrupts are enabled at boot: keep them disabled.

This is the right thing to do in barebox, so applied.

However, the Linux driver should not crash in this case.

Sascha

> 
> Signed-off-by: Beniamino Galvani <b.galvani at gmail.com>
> ---
>  drivers/net/arc_emac.c |    9 +++------
>  1 file changed, 3 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/net/arc_emac.c b/drivers/net/arc_emac.c
> index 23df3fd..8b74ea5 100644
> --- a/drivers/net/arc_emac.c
> +++ b/drivers/net/arc_emac.c
> @@ -210,9 +210,6 @@ static int arc_emac_open(struct eth_device *edev)
>  	arc_reg_set(priv, R_RX_RING, (unsigned int)priv->rxbd);
>  	arc_reg_set(priv, R_TX_RING, (unsigned int)priv->txbd);
>  
> -	/* Enable interrupts */
> -	arc_reg_set(priv, R_ENABLE, RXINT_MASK | ERR_MASK);
> -
>  	/* Set CONTROL */
>  	arc_reg_set(priv, R_CTRL,
>  		     (RX_BD_NUM << 24) |	/* RX BD table length */
> @@ -317,9 +314,6 @@ static void arc_emac_halt(struct eth_device *edev)
>  {
>  	struct arc_emac_priv *priv = edev->priv;
>  
> -	/* Disable interrupts */
> -	arc_reg_clr(priv, R_ENABLE, RXINT_MASK | ERR_MASK);
> -
>  	/* Disable EMAC */
>  	arc_reg_clr(priv, R_CTRL, EN_MASK);
>  }
> @@ -440,6 +434,9 @@ static int arc_emac_probe(struct device_d *dev)
>  	/* Set poll rate so that it polls every 1 ms */
>  	arc_reg_set(priv, R_POLLRATE, clock_frequency / 1000000);
>  
> +	/* Disable interrupts */
> +	arc_reg_set(priv, R_ENABLE, 0);
> +
>  	mdiobus_register(miibus);
>  	eth_register(edev);
>  
> -- 
> 1.7.10.4
> 
> 
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> 

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