From 2b6203bb7d85e6a2ca2088b8684f30be70246ddf Mon Sep 17 00:00:00 2001 From: Ursula Braun Date: Fri, 26 Nov 2010 02:41:19 +0000 Subject: qeth: enable interface setup if LAN is offline Device initialization of a qeth device contains a STARTLAN step. This step may fail, if cable is not yet plugged in. The qeth device stays in state HARDSETUP until cable is plugged in. This prevents further preparational initialization steps of the qeth device and its network interface. This patch makes sure initialization of qeth device continues, even though cable is not yet plugged in. Once carrier is available, qeth is notified, triggers a recovery which results in a working network interface. Signed-off-by: Ursula Braun Signed-off-by: Frank Blaschka Signed-off-by: David S. Miller --- drivers/s390/net/qeth_l2_main.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) (limited to '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 847e8797073..7a7a1b66478 100644 --- a/drivers/s390/net/qeth_l2_main.c +++ b/drivers/s390/net/qeth_l2_main.c @@ -849,8 +849,6 @@ static int qeth_l2_open(struct net_device *dev) card->state = CARD_STATE_UP; netif_start_queue(dev); - if (!card->lan_online && netif_carrier_ok(dev)) - netif_carrier_off(dev); if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) { napi_enable(&card->napi); napi_schedule(&card->napi); @@ -1013,13 +1011,14 @@ 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; - goto out; + goto contin; } rc = -ENODEV; goto out_remove; } else card->lan_online = 1; +contin: if ((card->info.type == QETH_CARD_TYPE_OSD) || (card->info.type == QETH_CARD_TYPE_OSX)) /* configure isolation level */ @@ -1038,7 +1037,10 @@ static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode) goto out_remove; } card->state = CARD_STATE_SOFTSETUP; - netif_carrier_on(card->dev); + if (card->lan_online) + netif_carrier_on(card->dev); + else + netif_carrier_off(card->dev); qeth_set_allowed_threads(card, 0xffffffff, 0); if (recover_flag == CARD_STATE_RECOVER) { @@ -1055,7 +1057,6 @@ 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); mutex_unlock(&card->discipline_mutex); return 0; -- cgit v1.2.3-70-g09d2