[PATCH] s390: qeth driver fixes [6/6]

[PATCH 9/9] s390: qeth driver fixes [6/6]

From: Frank Pavlic <fpavlic@de.ibm.com>
	- Hipersockets has no IPV6 support, thus prevent issueing
	  SETRTG_IPV6 control commands on Hipersockets devices.
	- fixed error handling in qeth_sysfs_(un)register

Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

diff --git a/drivers/s390/net/qeth_main.c b/drivers/s390/net/qeth_main.c
index a1b2e6fd38ca27fe48a496fdef8741ece2c5e053..5613b4564fa2967f3b78a37fff49c87e621301be 100644 (file)
--- a/drivers/s390/net/qeth_main.c
+++ b/drivers/s390/net/qeth_main.c
@@ -7344,6 +7344,8 @@ qeth_setrouting_v6(struct qeth_card *card)
        QETH_DBF_TEXT(trace,3,"setrtg6");
 #ifdef CONFIG_QETH_IPV6
 
+       if (!qeth_is_supported(card, IPA_IPV6))
+               return 0;
        qeth_correct_routing_type(card, &card->options.route6.type,
                                  QETH_PROT_IPV6);
 
@@ -8544,34 +8546,44 @@ qeth_ipv6_uninit(void)
 static void
 qeth_sysfs_unregister(void)
 {
+       s390_root_dev_unregister(qeth_root_dev);
        qeth_remove_driver_attributes();
        ccw_driver_unregister(&qeth_ccw_driver);
        ccwgroup_driver_unregister(&qeth_ccwgroup_driver);
-       s390_root_dev_unregister(qeth_root_dev);
 }
+
 /**
  * register qeth at sysfs
  */
 static int
 qeth_sysfs_register(void)
 {
-       int rc=0;
+       int rc;
 
        rc = ccwgroup_driver_register(&qeth_ccwgroup_driver);
        if (rc)
-               return rc;
+               goto out;
+
        rc = ccw_driver_register(&qeth_ccw_driver);
        if (rc)
-               return rc;
+               goto out_ccw_driver;
+
        rc = qeth_create_driver_attributes();
        if (rc)
-               return rc;
+               goto out_qeth_attr;
+
        qeth_root_dev = s390_root_dev_register("qeth");
-       if (IS_ERR(qeth_root_dev)) {
-               rc = PTR_ERR(qeth_root_dev);
-               return rc;
-       }
-       return 0;
+       rc = IS_ERR(qeth_root_dev) ? PTR_ERR(qeth_root_dev) : 0;
+       if (!rc)
+               goto out;
+
+       qeth_remove_driver_attributes();
+out_qeth_attr:
+       ccw_driver_unregister(&qeth_ccw_driver);
+out_ccw_driver:
+       ccwgroup_driver_unregister(&qeth_ccwgroup_driver);
+out:
+       return rc;
 }
 
 /***
@@ -8580,7 +8592,7 @@ qeth_sysfs_register(void)
 static int __init
 qeth_init(void)
 {
-       int rc=0;
+       int rc;
 
        PRINT_INFO("loading %s\n", version);
 
@@ -8589,20 +8601,26 @@ qeth_init(void)
        spin_lock_init(&qeth_notify_lock);
        rwlock_init(&qeth_card_list.rwlock);
 
-       if (qeth_register_dbf_views())
+       rc = qeth_register_dbf_views();
+       if (rc)
                goto out_err;
-       if (qeth_sysfs_register())
-               goto out_sysfs;
+
+       rc = qeth_sysfs_register();
+       if (rc)
+               goto out_dbf;
 
 #ifdef CONFIG_QETH_IPV6
-       if (qeth_ipv6_init()) {
-               PRINT_ERR("Out of memory during ipv6 init.\n");
+       rc = qeth_ipv6_init();
+       if (rc) {
+               PRINT_ERR("Out of memory during ipv6 init code = %d\n", rc);
                goto out_sysfs;
        }
 #endif /* QETH_IPV6 */
-       if (qeth_register_notifiers())
+       rc = qeth_register_notifiers();
+       if (rc)
                goto out_ipv6;
-       if (qeth_create_procfs_entries())
+       rc = qeth_create_procfs_entries();
+       if (rc)
                goto out_notifiers;
 
        return rc;
@@ -8612,12 +8630,13 @@ out_notifiers:
 out_ipv6:
 #ifdef CONFIG_QETH_IPV6
        qeth_ipv6_uninit();
-#endif /* QETH_IPV6 */
 out_sysfs:
+#endif /* QETH_IPV6 */
        qeth_sysfs_unregister();
+out_dbf:
        qeth_unregister_dbf_views();
 out_err:
-       PRINT_ERR("Initialization failed");
+       PRINT_ERR("Initialization failed with code %d\n", rc);
        return rc;
 }