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Message-Id: <1254835525-2529-1-git-send-email-thomas@wytron.com.tw> Date: Tue, 6 Oct 2009 21:25:25 +0800 From: Thomas Chou <thomas@...ron.com.tw> To: netdev@...r.kernel.org Cc: thierry.reding@...onic-design.de, Nios2 development list <nios2-dev@...c.et.ntust.edu.tw>, linux-kernel@...r.kernel.org, Thomas Chou <thomas@...ron.com.tw> Subject: [PATCH] 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@...ron.com.tw> --- 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 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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