request_region cleanups from 2.4 and the kernel janitors.

Via Dave Jones.

drivers/net/arcnet/com90io.c

@@ -241,7 +241,10 @@ static int __init com90io_found(struct net_device *dev)
 		return -ENODEV;
 	}
 	/* Reserve the I/O region - guaranteed to work by check_region */
-	request_region(dev->base_addr, ARCNET_TOTAL_SIZE, "arcnet (COM90xx-IO)");
+	if (!request_region(dev->base_addr, ARCNET_TOTAL_SIZE, "arcnet (COM90xx-IO)")) {
+		free_irq(dev->irq, dev);
+		return -EBUSY;
+	}
 
 	/* Initialize the rest of the device structure. */
 	dev->priv = kmalloc(sizeof(struct arcnet_local), GFP_KERNEL);

drivers/net/eexpress.c

@@ -1674,7 +1674,6 @@ void cleanup_module(void)
 			unregister_netdev(dev);
 			kfree(dev->priv);
 			dev->priv = NULL;
-			release_region(dev->base_addr, EEXP_IO_EXTENT);
 		}
 	}
 }

drivers/net/sb1000.c

@@ -204,7 +204,12 @@ sb1000_probe(struct net_device *dev)
 		/*
 		 *	Ok set it up.
 		 */
-		 
+		if (!request_region(ioaddr[0], 16, dev->name))
+			continue;
+		if (!request_region(ioaddr[1], 16, dev->name)) {
+			release_region(ioaddr[0], 16);
+			continue;
+		}
 		 
 		dev->base_addr = ioaddr[0];
 		/* rmem_end holds the second I/O address - fv */
@@ -262,9 +267,6 @@ sb1000_probe(struct net_device *dev)
 
 		/* Lock resources */
 
-		request_region(ioaddr[0], 16, dev->name);
-		request_region(ioaddr[1], 16, dev->name);
-
 		return 0;
 	}
 }
@@ -962,8 +964,6 @@ sb1000_open(struct net_device *dev)
 	/* rmem_end holds the second I/O address - fv */
 	ioaddr[1] = dev->rmem_end;
 	name = dev->name;
-	request_region(ioaddr[0], SB1000_IO_EXTENT, "sb1000");
-	request_region(ioaddr[1], SB1000_IO_EXTENT, "sb1000");
 
 	/* initialize sb1000 */
 	if ((status = sb1000_reset(ioaddr, name)))