diff options
| author | Ursula Braun <ursula.braun@de.ibm.com> | 2010-07-22 23:15:05 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-07-23 12:36:23 -0700 |
| commit | 9dc48ccc68b9dfc01c2beee2d4317fb3df3fdce9 (patch) | |
| tree | 83d101e637385276ca40af1bb70ecc14ab24e33f /drivers/s390/net/qeth_l3_main.c | |
| parent | 75e0de13631e115768a97131a2d7f5259217512d (diff) | |
qeth: serialize sysfs-triggered device configurations
This patch serializes device removal and other sysfs-triggered
configurations by moving removal of sysfs-attributes to the beginning
of the remove functions. And it serializes online/offline setting
and discipline-switching (causing reestablishing of the net_device)
by making use of a new discipline mutex.
Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/s390/net/qeth_l3_main.c')
| -rw-r--r-- | drivers/s390/net/qeth_l3_main.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c index 15b5ca82bd26..e22ae248f613 100644 --- a/drivers/s390/net/qeth_l3_main.c +++ b/drivers/s390/net/qeth_l3_main.c @@ -3354,6 +3354,8 @@ static void qeth_l3_remove_device(struct ccwgroup_device *cgdev) { struct qeth_card *card = dev_get_drvdata(&cgdev->dev); + qeth_l3_remove_device_attributes(&cgdev->dev); + qeth_set_allowed_threads(card, 0, 1); wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); @@ -3367,7 +3369,6 @@ static void qeth_l3_remove_device(struct ccwgroup_device *cgdev) card->dev = NULL; } - qeth_l3_remove_device_attributes(&cgdev->dev); qeth_l3_clear_ip_list(card, 0, 0); qeth_l3_clear_ipato_list(card); return; @@ -3380,6 +3381,7 @@ static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode) enum qeth_card_states recover_flag; BUG_ON(!card); + mutex_lock(&card->discipline_mutex); mutex_lock(&card->conf_mutex); QETH_DBF_TEXT(SETUP, 2, "setonlin"); QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); @@ -3461,6 +3463,7 @@ static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode) kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); out: mutex_unlock(&card->conf_mutex); + mutex_unlock(&card->discipline_mutex); return 0; out_remove: card->use_hard_stop = 1; @@ -3473,6 +3476,7 @@ out_remove: else card->state = CARD_STATE_DOWN; mutex_unlock(&card->conf_mutex); + mutex_unlock(&card->discipline_mutex); return rc; } @@ -3488,6 +3492,7 @@ static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev, int rc = 0, rc2 = 0, rc3 = 0; enum qeth_card_states recover_flag; + mutex_lock(&card->discipline_mutex); mutex_lock(&card->conf_mutex); QETH_DBF_TEXT(SETUP, 3, "setoffl"); QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); @@ -3508,6 +3513,7 @@ static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev, /* let user_space know that device is offline */ kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); mutex_unlock(&card->conf_mutex); + mutex_unlock(&card->discipline_mutex); return 0; } |