hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

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>
This commit is contained in:
Thomas Chou 2009-10-06 03:25:25 +00:00 committed by David S. Miller
parent 0baa080c75
commit a4d63a9437
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/ethoc.c
View File

@ -662,8 +662,8 @@ static int ethoc_open(struct net_device *dev)
if (ret) if (ret)
return ret; return ret;
/* calculate the number of TX/RX buffers */ /* calculate the number of TX/RX buffers, maximum 128 supported */
num_bd = (dev->mem_end - dev->mem_start + 1) / ETHOC_BUFSIZ; num_bd = min(128, (dev->mem_end - dev->mem_start + 1) / ETHOC_BUFSIZ);
priv->num_tx = max(min_tx, num_bd / 4); priv->num_tx = max(min_tx, num_bd / 4);
priv->num_rx = num_bd - priv->num_tx; priv->num_rx = num_bd - priv->num_tx;
ethoc_write(priv, TX_BD_NUM, priv->num_tx); ethoc_write(priv, TX_BD_NUM, priv->num_tx);