Commit a4d63a94 authored by Thomas Chou's avatar Thomas Chou Committed by David S. Miller
Browse files

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: default avatarThomas Chou <thomas@wytron.com.tw>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0baa080c

drivers/net/ethoc.c

+2 −2
Original line number Diff line number Diff line
@@ -662,8 +662,8 @@ static int ethoc_open(struct net_device *dev) 
	if (ret)

		return ret;



	/* calculate the number of TX/RX buffers */

	num_bd = (dev->mem_end - dev->mem_start + 1) / ETHOC_BUFSIZ;

	/* calculate the number of TX/RX buffers, maximum 128 supported */

	num_bd = min(128, (dev->mem_end - dev->mem_start + 1) / ETHOC_BUFSIZ);

	priv->num_tx = max(min_tx, num_bd / 4);

	priv->num_rx = num_bd - priv->num_tx;

	ethoc_write(priv, TX_BD_NUM, priv->num_tx);