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SubjectRe: [PATCH v2] net: add Faraday FTMAC100 10/100 Ethernet driver
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Le lundi 17 janvier 2011 à 17:21 +0800, Po-Yu Chuang a écrit :


> +
> + spin_lock_irqsave(&priv->tx_lock, flags);
> + ftmac100_txdes_set_skb(txdes, skb);
> + ftmac100_txdes_set_dma_addr(txdes, map);
> +
> + ftmac100_txdes_set_first_segment(txdes);
> + ftmac100_txdes_set_last_segment(txdes);
> + ftmac100_txdes_set_txint(txdes);
> + ftmac100_txdes_set_buffer_size(txdes, len);
> +

I wonder if its not too expensive to read/modify/write txdes->txdes1

Maybe you should use a temporary u32 var and perform one final write on
txdes->txdes1 (with the set_dma_own)

> + priv->tx_pending++;
> + if (priv->tx_pending == TX_QUEUE_ENTRIES) {
> + if (net_ratelimit())
> + netdev_info(netdev, "tx queue full\n");
> +
> + netif_stop_queue(netdev);
> + }
> +
> + /* start transmit */
> + ftmac100_txdes_set_dma_own(txdes);

txdes->txdes1 = txdes1;

BTW, shouldnt you use cpu_to_be32() or cpu_to_le32(), if this driver is
multi platform ?



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