[PATCH v4] ethernet/arc/arc_emac - Add new driver

[Joe Perches]

On Sun, 2013-06-16 at 00:20 +0400, Alexey Brodkin wrote:
> Driver for non-standard on-chip ethernet device ARC EMAC 10/100,
> instantiated in some legacy ARC (Synopsys) FPGA Boards such as
> ARCAngel4/ML50x.

> diff --git a/drivers/net/ethernet/arc/emac_main.c b/drivers/net/ethernet/arc/emac_main.c
[]
> +		if (DUPLEX_FULL == phy_dev->duplex)

Most all kernel code uses "if (var == constant)"
as that's how most people think.

[]

> +static int arc_emac_rx(struct net_device *ndev, int budget)
[]
> +		/* Prepare the BD for next cycle */
> +		rx_buff->skb = netdev_alloc_skb_ip_align(ndev, buflen);
> +		if (unlikely(!rx_buff->skb)) {
> +			if (net_ratelimit())
> +				netdev_err(ndev, "cannot allocate skb\n");

Unnecessary OOM message, might as well remove it.
rx_dropped gives the same info.