linux-kernel - [PATCH 3/4] IP100A: Correct initial and close hardware step.

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Date:	Tue, 22 Aug 2006 14:30:26 -0400
From:	Jesse Huang <jesse@...lus.com.tw>
To:	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	akpm@...l.org, jgarzik@...ox.com, jesse@...lus.com.tw
Subject: [PATCH 3/4] IP100A: Correct initial and close hardware step.

From: Jesse Huang <jesse@...lus.com.tw>

Change Logs:
   - Correct initial and close hardware step.

Signed-off-by: Jesse Huang <jesse@...lus.com.tw>

---

 sundance.c |   10 +++++++++-
 1 files changed, 9 insertions(+), 1 deletions(-)

ddfaae9a0f4bd37c155f21fb4779093eef059bf6
diff --git a/sundance.c b/sundance.c
index 259c42f..424aebd 100755
--- a/sundance.c
+++ b/sundance.c
@@ -787,6 +787,7 @@ static int netdev_open(struct net_device
 {
 	struct netdev_private *np = netdev_priv(dev);
 	void __iomem *ioaddr = np->base;
+	unsigned long flags;
 	int i;
 
 	/* Do we need to reset the chip??? */
@@ -830,6 +831,10 @@ #endif
 	if (np->pci_rev_id >= 0x14)
 		iowrite8(0x01, ioaddr + DebugCtrl1);
 	netif_start_queue(dev);
+	
+	spin_lock_irqsave(&np->lock,flags);
+	reset_tx(dev);
+	spin_unlock_irqrestore(&np->lock,flags);
 
 	iowrite16 (StatsEnable | RxEnable | TxEnable, ioaddr + MACCtrl1);
 
@@ -1655,7 +1660,10 @@ static int netdev_close(struct net_devic
 
 	/* Disable interrupts by clearing the interrupt mask. */
 	iowrite16(0x0000, ioaddr + IntrEnable);
-
+	
+	/* Disable Rx and Tx DMA for safely release resource */
+	iowrite32(0x500, ioaddr + DMACtrl);
+	
 	/* Stop the chip's Tx and Rx processes. */
 	iowrite16(TxDisable | RxDisable | StatsDisable, ioaddr + MACCtrl1);
 
-- 
1.3.GIT



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