qeth: synchronize configuration interface

[safe/jmp/linux-2.6] / drivers / s390 / net / qeth_l2_main.c

diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c
index 904b1f3..b447e19 100644 (file)
--- a/drivers/s390/net/qeth_l2_main.c
+++ b/drivers/s390/net/qeth_l2_main.c
@@ -924,6 +924,7 @@ static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
        enum qeth_card_states recover_flag;
 
        BUG_ON(!card);
+       mutex_lock(&card->conf_mutex);
        QETH_DBF_TEXT(SETUP, 2, "setonlin");
        QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
 
@@ -956,7 +957,7 @@ static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
                        dev_warn(&card->gdev->dev,
                                "The LAN is offline\n");
                        card->lan_online = 0;
-                       return 0;
+                       goto out;
                }
                rc = -ENODEV;
                goto out_remove;
@@ -995,6 +996,8 @@ static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
        }
        /* let user_space know that device is online */
        kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
+out:
+       mutex_unlock(&card->conf_mutex);
        return 0;
 
 out_remove:
@@ -1007,6 +1010,7 @@ out_remove:
                card->state = CARD_STATE_RECOVER;
        else
                card->state = CARD_STATE_DOWN;
+       mutex_unlock(&card->conf_mutex);
        return rc;
 }
 
@@ -1022,6 +1026,7 @@ static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
        int rc = 0, rc2 = 0, rc3 = 0;
        enum qeth_card_states recover_flag;
 
+       mutex_lock(&card->conf_mutex);
        QETH_DBF_TEXT(SETUP, 3, "setoffl");
        QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
 
@@ -1040,6 +1045,7 @@ static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
                card->state = CARD_STATE_RECOVER;
        /* let user_space know that device is offline */
        kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
+       mutex_unlock(&card->conf_mutex);
        return 0;
 }