On Wed, 2013-07-31 at 16:20 +0200, Jonas Jensen wrote:
> The MOXA UC-711X hardware(s) has an ethernet controller that seem to be
> developed internally. The IC used is "RTL8201CP".
Just some simple comments...
> diff --git a/drivers/net/ethernet/moxa/moxart_ether.c b/drivers/net/ethernet/moxa/moxart_ether.c
[]
> +static int moxart_rx_poll(struct napi_struct *napi, int budget)
[]
> + while (1) {
[]
> + if (ui & (RX_ERR | CRC_ERR | FTL | RUNT | RX_ODD_NB)) {
> + netdev_err(ndev, "packet error\n");
This is generally a bad idea as it can flood
the log. It's probably better to remove it.
If you really want logging, then at least use
net_ratelimit(). Generally, the stats are
enough.
> + priv->stats.rx_dropped++;
> + priv->stats.rx_errors++;
[]
> +static int moxart_mac_start_xmit(struct sk_buff *skb, struct net_device *ndev)
[]
> + if (txdesc->txdes0.ubit.tx_dma_own) {
> + netdev_err(ndev, "no TX space for packet\n");
> + priv->stats.tx_dropped++;
here too.
> +static int moxart_mac_probe(struct platform_device *pdev)
[]
> + priv->tx_buf_base = kmalloc(priv->tx_buf_size * TX_DESC_NUM,
> + GFP_ATOMIC);
> + if (!priv->tx_buf_base) {
> + netdev_err(ndev, "TX buffer alloc failed\n");
> + goto init_fail;
> + }
> +
> + priv->rx_buf_base = kmalloc(priv->rx_buf_size * RX_DESC_NUM,
> + GFP_ATOMIC);
> + if (!priv->rx_buf_base) {
> + netdev_err(ndev, "RX buffer alloc failed\n");
> + goto init_fail;
> + }
Extra OOM messages aren't useful, there's a generic
OOM and a dump_stack from the kernel.
> + netdev_dbg(ndev, "%s: IRQ=%d address=%02x:%02x:%02x:%02x:%02x:%02x\n",
> + __func__, ndev->irq,
> + ndev->dev_addr[0], ndev->dev_addr[1], ndev->dev_addr[2],
> + ndev->dev_addr[3], ndev->dev_addr[4], ndev->dev_addr[5]);
There's a mac address helper you can use:
netdev_dbg(ndev, "%s: IRQ=%d address=%pM\n"
__func__, ndev->irq, ndev->dev_addr);
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