Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932668AbWJBGlW (ORCPT ); Mon, 2 Oct 2006 02:41:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932667AbWJBGlV (ORCPT ); Mon, 2 Oct 2006 02:41:21 -0400 Received: from msr44.hinet.net ([168.95.4.144]:10927 "EHLO msr44.hinet.net") by vger.kernel.org with ESMTP id S932663AbWJBGlU (ORCPT ); Mon, 2 Oct 2006 02:41:20 -0400 Subject: [PATCH 5/5] Solve host error problem in low performance embedded system when continune down and up. From: Jesse Huang To: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, akpm@osdl.org, jgarzik@pobox.com, jesse@icplus.com.tw Content-Type: text/plain Date: Mon, 02 Oct 2006 14:26:36 -0400 Message-Id: <1159813596.2576.8.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.6.0 (2.6.0-1) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1968 Lines: 73 From: Jesse Huang Change Logs: Solve host error problem in low performance embedded system when continune down and up. Signed-off-by: Jesse Huang --- drivers/net/sundance.c | 26 +++++++++++++++++++++++--- 1 files changed, 23 insertions(+), 3 deletions(-) c06c70e20a85facd640528ca66e0b579fc3ee745 diff --git a/drivers/net/sundance.c b/drivers/net/sundance.c index 14b4933..b4a6010 100755 --- a/drivers/net/sundance.c +++ b/drivers/net/sundance.c @@ -1643,6 +1643,14 @@ static int netdev_close(struct net_devic struct sk_buff *skb; int i; + /* Wait and kill tasklet */ + tasklet_kill(&np->rx_tasklet); + tasklet_kill(&np->tx_tasklet); + np->cur_tx = 0; + np->dirty_tx = 0; + np->cur_task = 0; + np->last_tx = 0; + netif_stop_queue(dev); if (netif_msg_ifdown(np)) { @@ -1663,9 +1671,20 @@ static int netdev_close(struct net_devic /* Stop the chip's Tx and Rx processes. */ iowrite16(TxDisable | RxDisable | StatsDisable, ioaddr + MACCtrl1); - /* Wait and kill tasklet */ - tasklet_kill(&np->rx_tasklet); - tasklet_kill(&np->tx_tasklet); + for (i = 2000; i > 0; i--) { + if ((ioread32(ioaddr + DMACtrl) &0xC000) == 0) + break; + mdelay(1); + } + + iowrite16(GlobalReset | DMAReset | FIFOReset | NetworkReset, ioaddr +ASICCtrl + 2); + + for (i = 2000; i > 0; i--) + { + if ((ioread16(ioaddr + ASICCtrl +2) &ResetBusy) == 0) + break; + mdelay(1); + } #ifdef __i386__ if (netif_msg_hw(np)) { @@ -1703,6 +1722,7 @@ #endif /* __i386__ debugging only */ } } for (i = 0; i < TX_RING_SIZE; i++) { + np->tx_ring[i].next_desc = 0; skb = np->tx_skbuff[i]; if (skb) { pci_unmap_single(np->pci_dev, -- 1.3.GIT - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/