From: Stephen Hemminger <shemminger@osdl.org>
Date: Sat, 7 Jan 2006 00:57:41 +0000 (-0800)
Subject: [PATCH] sk98lin: error handling on dual port board
X-Git-Tag: v2.6.16-rc1~669^2~16
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=decf67aa2f4d498c02c2ad24a187a66c217f330c;p=linux-2.6

[PATCH] sk98lin: error handling on dual port board

Sk98lin driver error recovery on two port boards is bad.
If it fails the second allocation, it will not release resources
properly. Also it registers the second port in the pci driver data

If second port fails, might as well go with one port.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
---

diff --git a/drivers/net/sk98lin/skge.c b/drivers/net/sk98lin/skge.c
index 9a879530ef..87bfe4c24a 100644
--- a/drivers/net/sk98lin/skge.c
+++ b/drivers/net/sk98lin/skge.c
@@ -4899,15 +4899,17 @@ static int __devinit skge_probe_one(struct pci_dev *pdev,
 
 	boards_found++;
 
+	pci_set_drvdata(pdev, dev);
+
 	/* More then one port found */
 	if ((pAC->GIni.GIMacsFound == 2 ) && (pAC->RlmtNets == 2)) {
-		if ((dev = alloc_etherdev(sizeof(DEV_NET))) == 0) {
-			printk(KERN_ERR "Unable to allocate etherdev "
+		dev = alloc_etherdev(sizeof(DEV_NET));
+		if (!dev) {
+			printk(KERN_ERR "sk98lin: unable to allocate etherdev "
 				"structure!\n");
-			goto out;
+			goto single_port;
 		}
 
-		pAC->dev[1]   = dev;
 		pNet          = netdev_priv(dev);
 		pNet->PortNr  = 1;
 		pNet->NetNr   = 1;
@@ -4939,20 +4941,25 @@ static int __devinit skge_probe_one(struct pci_dev *pdev,
 		if (using_dac)
 			dev->features |= NETIF_F_HIGHDMA;
 
-		if (register_netdev(dev)) {
-			printk(KERN_ERR "sk98lin: Could not register device for seconf port.\n");
+		error = register_netdev(dev);
+		if (error) {
+			printk(KERN_ERR "sk98lin: Could not register device"
+			       " for second port. (%d)\n", error);
 			free_netdev(dev);
-			pAC->dev[1] = pAC->dev[0];
-		} else {
-			memcpy(&dev->dev_addr,
-					&pAC->Addr.Net[1].CurrentMacAddress, 6);
-			memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
-	
-			printk("%s: %s\n", dev->name, DeviceStr);
-			printk("      PrefPort:B  RlmtMode:Dual Check Link State\n");
+			goto single_port;
 		}
+
+		pAC->dev[1]   = dev;
+		memcpy(&dev->dev_addr,
+		       &pAC->Addr.Net[1].CurrentMacAddress, 6);
+		memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
+
+		printk("%s: %s\n", dev->name, DeviceStr);
+		printk("      PrefPort:B  RlmtMode:Dual Check Link State\n");
 	}
 
+single_port:
+
 	/* Save the hardware revision */
 	pAC->HWRevision = (((pAC->GIni.GIPciHwRev >> 4) & 0x0F)*10) +
 		(pAC->GIni.GIPciHwRev & 0x0F);
@@ -4964,7 +4971,6 @@ static int __devinit skge_probe_one(struct pci_dev *pdev,
 	memset(&pAC->PnmiBackup, 0, sizeof(SK_PNMI_STRUCT_DATA));
 	memcpy(&pAC->PnmiBackup, &pAC->PnmiStruct, sizeof(SK_PNMI_STRUCT_DATA));
 
-	pci_set_drvdata(pdev, dev);
 	return 0;
 
  out_free_resources: