ethoc: limit the number of buffers to 128
Only 128 buffer descriptors are supported in the core. Limit the number in case we have more memory. Signed-off-by: Thomas Chou <thomas@wytron.com.tw> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -662,8 +662,8 @@ static int ethoc_open(struct net_device *dev)
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if (ret)
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return ret;
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/* calculate the number of TX/RX buffers */
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num_bd = (dev->mem_end - dev->mem_start + 1) / ETHOC_BUFSIZ;
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/* calculate the number of TX/RX buffers, maximum 128 supported */
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num_bd = min(128, (dev->mem_end - dev->mem_start + 1) / ETHOC_BUFSIZ);
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priv->num_tx = max(min_tx, num_bd / 4);
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priv->num_rx = num_bd - priv->num_tx;
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ethoc_write(priv, TX_BD_NUM, priv->num_tx);
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