From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Chou Subject: [PATCH] ethoc: limit the number of buffers to 128 Date: Tue, 6 Oct 2009 21:25:25 +0800 Message-ID: <1254835525-2529-1-git-send-email-thomas@wytron.com.tw> Cc: thierry.reding@avionic-design.de, Nios2 development list , linux-kernel@vger.kernel.org, Thomas Chou To: netdev@vger.kernel.org Return-path: Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Only 128 buffer descriptors are supported in the core. Limit the number in case we have more memory. Signed-off-by: Thomas Chou --- drivers/net/ethoc.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethoc.c b/drivers/net/ethoc.c index 6d82dc6..34d0c69 100644 --- a/drivers/net/ethoc.c +++ b/drivers/net/ethoc.c @@ -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); -- 1.6.2.5