[netdrvr] ibmlana: modularization cleanup

* move alloc_netdev() call, register_netdev() call, and associated failure
  cleanup into ibmlana_probe()

* move per-net_device cleanup into ibmlana_remove_one()

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 64 insertions, 45 deletions

diff --git a/drivers/net/ibmlana.c b/drivers/net/ibmlana.c
index 65626d61de46..6969bf17588f 100644
--- a/drivers/net/ibmlana.c
+++ b/drivers/net/ibmlana.c
@@ -890,11 +890,14 @@ static void ibmlana_set_multicast_list(struct net_device *dev)
  * hardware check
  * ------------------------------------------------------------------------ */
 
+static int ibmlana_irq;
+static int ibmlana_io;
 static int startslot;           /* counts through slots when probing multiple devices */
 
-static int ibmlana_probe(struct net_device *dev)
+static int ibmlana_probe(struct net_device **dev_out)
 {
-        int slot, z;
+        struct net_device *dev;
+        int slot, z, rc;
         int base = 0, irq = 0, iobase = 0, memlen = 0;
         ibmlana_priv *priv;
         ibmlana_medium medium;
@@ -904,6 +907,13 @@ static int ibmlana_probe(struct net_device *dev)
         if (MCA_bus == 0)
                 return -ENODEV;
 
+        dev = alloc_etherdev(sizeof(ibmlana_priv));
+        if (!dev)
+                return -ENOMEM;
+
+        dev->irq = ibmlana_irq;
+        dev->base_addr = ibmlana_io;
+
         base = dev->mem_start;
         irq = dev->irq;
 
@@ -924,8 +934,10 @@ static int ibmlana_probe(struct net_device *dev)
         }
 
         /* nothing found ? */
-        if (slot == -1)
-                return (base != 0 || irq != 0) ? -ENXIO : -ENODEV;
+        if (slot == -1) {
+                rc = (base != 0 || irq != 0) ? -ENXIO : -ENODEV;
+                goto err_out;
+        }
 
         /* announce success */
         printk(KERN_INFO "%s: IBM LAN Adapter/A found in slot %d\n", dev->name, slot + 1);
@@ -934,7 +946,8 @@ static int ibmlana_probe(struct net_device *dev)
         if (!request_region(iobase, IBM_LANA_IORANGE, DRV_NAME)) {
                 printk(KERN_ERR "%s: cannot allocate I/O range at %#x!\n", DRV_NAME, iobase);
                 startslot = slot + 1;
-                return -EBUSY;
+                rc = -EBUSY;
+                goto err_out;
         }
 
         priv = netdev_priv(dev);
@@ -955,8 +968,8 @@ static int ibmlana_probe(struct net_device *dev)
         if (!priv->base) {
                 printk(KERN_ERR "%s: cannot remap memory!\n", DRV_NAME);
                 startslot = slot + 1;
-                release_region(iobase, IBM_LANA_IORANGE);
-                return -EBUSY;
+                rc = -EBUSY;
+                goto err_out_reg;
         }
 
         /* make procfs entries */
@@ -996,73 +1009,79 @@ static int ibmlana_probe(struct net_device *dev)
 
         startslot = slot + 1;
 
+        rc = register_netdev(dev);
+        if (rc)
+                goto err_out_claimed;
+
+        *dev_out = dev;
         return 0;
+
+err_out_claimed:
+        mca_mark_as_unused(priv->slot);
+        mca_set_adapter_name(priv->slot, "");
+        mca_set_adapter_procfn(priv->slot, NULL, NULL);
+        iounmap(priv->base);
+err_out_reg:
+        release_region(iobase, IBM_LANA_IORANGE);
+err_out:
+        free_netdev(dev);
+        return rc;
+}
+
+static void ibmlana_remove_one(struct net_device *_dev)
+{
+        struct net_device *dev = _dev;
+        ibmlana_priv *priv = netdev_priv(dev);
+
+        unregister_netdev(dev);
+        /*DeinitBoard(dev); */
+        release_region(dev->base_addr, IBM_LANA_IORANGE);
+        mca_mark_as_unused(priv->slot);
+        mca_set_adapter_name(priv->slot, "");
+        mca_set_adapter_procfn(priv->slot, NULL, NULL);
+        iounmap(priv->base);
+        free_netdev(dev);
 }
 
 /* ------------------------------------------------------------------------
  * modularization support
  * ------------------------------------------------------------------------ */
 
-#ifdef MODULE
-
 #define DEVMAX 5
 
 static struct net_device *moddevs[DEVMAX];
-static int irq;
-static int io;
 
-module_param(irq, int, 0);
-module_param(io, int, 0);
+module_param_named(irq, ibmlana_irq, int, 0);
+module_param_named(io, ibmlana_io, int, 0);
 MODULE_PARM_DESC(irq, "IBM LAN/A IRQ number");
 MODULE_PARM_DESC(io, "IBM LAN/A I/O base address");
 MODULE_LICENSE("GPL");
 
-int init_module(void)
+static int __init ibmlana_init_module(void)
 {
         int z;
 
         startslot = 0;
         for (z = 0; z < DEVMAX; z++) {
-                struct net_device *dev = alloc_etherdev(sizeof(ibmlana_priv));
-                if (!dev)
-                        break;
-                dev->irq = irq;
-                dev->base_addr = io;
-                if (ibmlana_probe(dev)) {
-                        free_netdev(dev);
-                        break;
-                }
-                if (register_netdev(dev)) {
-                        ibmlana_priv *priv = netdev_priv(dev);
-                        release_region(dev->base_addr, IBM_LANA_IORANGE);
-                        mca_mark_as_unused(priv->slot);
-                        mca_set_adapter_name(priv->slot, "");
-                        mca_set_adapter_procfn(priv->slot, NULL, NULL);
-                        iounmap(priv->base);
-                        free_netdev(dev);
+                struct net_device *dev = NULL;
+
+                if (ibmlana_probe(&dev))
                         break;
-                }
+
                 moddevs[z] = dev;
         }
         return (z > 0) ? 0 : -EIO;
 }
 
-void cleanup_module(void)
+static void __exit ibmlana_cleanup_module(void)
 {
         int z;
         for (z = 0; z < DEVMAX; z++) {
                 struct net_device *dev = moddevs[z];
-                if (dev) {
-                        ibmlana_priv *priv = netdev_priv(dev);
-                        unregister_netdev(dev);
-                        /*DeinitBoard(dev); */
-                        release_region(dev->base_addr, IBM_LANA_IORANGE);
-                        mca_mark_as_unused(priv->slot);
-                        mca_set_adapter_name(priv->slot, "");
-                        mca_set_adapter_procfn(priv->slot, NULL, NULL);
-                        iounmap(priv->base);
-                        free_netdev(dev);
-                }
+                if (dev)
+                        ibmlana_remove_one(dev);
         }
 }
-#endif                          /* MODULE */
+
+module_init(ibmlana_init_module);
+module_exit(ibmlana_cleanup_module);