diff options
Diffstat (limited to 'drivers/s390')
-rw-r--r-- | drivers/s390/net/qeth_core_main.c | 68 |
1 files changed, 31 insertions, 37 deletions
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index ce7ff1abbef3..3d2374801308 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -972,8 +972,6 @@ static void qeth_irq(struct ccw_device *cdev, unsigned long intparm, /* while we hold the ccwdev lock, this stays valid: */ gdev = dev_get_drvdata(&cdev->dev); card = dev_get_drvdata(&gdev->dev); - if (!card) - return; QETH_CARD_TEXT(card, 5, "irq"); @@ -1198,31 +1196,6 @@ static void qeth_free_buffer_pool(struct qeth_card *card) } } -static void qeth_clean_channel(struct qeth_channel *channel) -{ - struct ccw_device *cdev = channel->ccwdev; - - QETH_DBF_TEXT(SETUP, 2, "freech"); - - spin_lock_irq(get_ccwdev_lock(cdev)); - cdev->handler = NULL; - spin_unlock_irq(get_ccwdev_lock(cdev)); -} - -static void qeth_setup_channel(struct qeth_channel *channel) -{ - struct ccw_device *cdev = channel->ccwdev; - - QETH_DBF_TEXT(SETUP, 2, "setupch"); - - channel->state = CH_STATE_DOWN; - atomic_set(&channel->irq_pending, 0); - - spin_lock_irq(get_ccwdev_lock(cdev)); - cdev->handler = qeth_irq; - spin_unlock_irq(get_ccwdev_lock(cdev)); -} - static int qeth_osa_set_output_queues(struct qeth_card *card, bool single) { unsigned int count = single ? 1 : card->dev->num_tx_queues; @@ -1395,9 +1368,6 @@ static struct qeth_card *qeth_alloc_card(struct ccwgroup_device *gdev) if (!card->read_cmd) goto out_read_cmd; - qeth_setup_channel(&card->read); - qeth_setup_channel(&card->write); - qeth_setup_channel(&card->data); card->qeth_service_level.seq_print = qeth_core_sl_print; register_service_level(&card->qeth_service_level); return card; @@ -1467,12 +1437,38 @@ int qeth_stop_channel(struct qeth_channel *channel) channel->active_cmd); channel->active_cmd = NULL; } + cdev->handler = NULL; spin_unlock_irq(get_ccwdev_lock(cdev)); return rc; } EXPORT_SYMBOL_GPL(qeth_stop_channel); +static int qeth_start_channel(struct qeth_channel *channel) +{ + struct ccw_device *cdev = channel->ccwdev; + int rc; + + channel->state = CH_STATE_DOWN; + atomic_set(&channel->irq_pending, 0); + + spin_lock_irq(get_ccwdev_lock(cdev)); + cdev->handler = qeth_irq; + spin_unlock_irq(get_ccwdev_lock(cdev)); + + rc = ccw_device_set_online(cdev); + if (rc) + goto err; + + return 0; + +err: + spin_lock_irq(get_ccwdev_lock(cdev)); + cdev->handler = NULL; + spin_unlock_irq(get_ccwdev_lock(cdev)); + return rc; +} + static int qeth_halt_channels(struct qeth_card *card) { int rc1 = 0, rc2 = 0, rc3 = 0; @@ -4706,7 +4702,7 @@ static void qeth_determine_capabilities(struct qeth_card *card) QETH_CARD_TEXT(card, 2, "detcapab"); if (!ddev->online) { ddev_offline = 1; - rc = ccw_device_set_online(ddev); + rc = qeth_start_channel(channel); if (rc) { QETH_CARD_TEXT_(card, 2, "3err%d", rc); goto out; @@ -4881,9 +4877,6 @@ out_free_nothing: static void qeth_core_free_card(struct qeth_card *card) { QETH_CARD_TEXT(card, 2, "freecrd"); - qeth_clean_channel(&card->read); - qeth_clean_channel(&card->write); - qeth_clean_channel(&card->data); qeth_put_cmd(card->read_cmd); destroy_workqueue(card->event_wq); unregister_service_level(&card->qeth_service_level); @@ -4946,13 +4939,14 @@ retry: qeth_stop_channel(&card->write); qeth_stop_channel(&card->read); qdio_free(CARD_DDEV(card)); - rc = ccw_device_set_online(CARD_RDEV(card)); + + rc = qeth_start_channel(&card->read); if (rc) goto retriable; - rc = ccw_device_set_online(CARD_WDEV(card)); + rc = qeth_start_channel(&card->write); if (rc) goto retriable; - rc = ccw_device_set_online(CARD_DDEV(card)); + rc = qeth_start_channel(&card->data); if (rc) goto retriable; retriable: |