drivers/net/wireless/{airo,ipw2100}: fix error handling bugs

airo:
* fix oops, if !CONFIG_PROC_FS (create_proc_entry always returns NULL)

* handle pci_register_driver() failure.  if it fails, we really do
  want to exit, rather than (as a comment indicates) return success
  because-we-are-a-library.

* #if 0 have_isa_dev variable, which is assigned a value but never used

ipw2100:
* handle sysfs_create_group() failure

* handle driver_create_file() failure

Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/net/wireless/airo.c

@@ -5659,25 +5659,40 @@ static int airo_pci_resume(struct pci_dev *pdev)
 
 static int __init airo_init_module( void )
 {
-	int i, have_isa_dev = 0;
+	int i;
+#if 0
+	int have_isa_dev = 0;
+#endif
 
 	airo_entry = create_proc_entry("aironet",
 				       S_IFDIR | airo_perm,
 				       proc_root_driver);
-        airo_entry->uid = proc_uid;
-        airo_entry->gid = proc_gid;
+
+	if (airo_entry) {
+		airo_entry->uid = proc_uid;
+		airo_entry->gid = proc_gid;
+	}
 
 	for( i = 0; i < 4 && io[i] && irq[i]; i++ ) {
 		airo_print_info("", "Trying to configure ISA adapter at irq=%d "
 			"io=0x%x", irq[i], io[i] );
 		if (init_airo_card( irq[i], io[i], 0, NULL ))
+#if 0
 			have_isa_dev = 1;
+#else
+			/* do nothing */ ;
+#endif
 	}
 
 #ifdef CONFIG_PCI
 	airo_print_info("", "Probing for PCI adapters");
-	pci_register_driver(&airo_driver);
+	i = pci_register_driver(&airo_driver);
 	airo_print_info("", "Finished probing for PCI adapters");
+
+	if (i) {
+		remove_proc_entry("aironet", proc_root_driver);
+		return i;
+	}
 #endif
 
 	/* Always exit with success, as we are a library module

drivers/net/wireless/ipw2100.c

@@ -6267,7 +6267,9 @@ static int ipw2100_pci_init_one(struct pci_dev *pci_dev,
 	IPW_DEBUG_INFO("%s: Bound to %s\n", dev->name, pci_name(pci_dev));
 
 	/* perform this after register_netdev so that dev->name is set */
-	sysfs_create_group(&pci_dev->dev.kobj, &ipw2100_attribute_group);
+	err = sysfs_create_group(&pci_dev->dev.kobj, &ipw2100_attribute_group);
+	if (err)
+		goto fail_unlock;
 
 	/* If the RF Kill switch is disabled, go ahead and complete the
 	 * startup sequence */
@@ -6533,13 +6535,16 @@ static int __init ipw2100_init(void)
 	printk(KERN_INFO DRV_NAME ": %s\n", DRV_COPYRIGHT);
 
 	ret = pci_register_driver(&ipw2100_pci_driver);
+	if (ret)
+		goto out;
 
 #ifdef CONFIG_IPW2100_DEBUG
 	ipw2100_debug_level = debug;
-	driver_create_file(&ipw2100_pci_driver.driver,
-			   &driver_attr_debug_level);
+	ret = driver_create_file(&ipw2100_pci_driver.driver,
+				 &driver_attr_debug_level);
 #endif
 
+out:
 	return ret;
 }