diff options
Diffstat (limited to 'drivers/scsi/scsi_transport_fc.c')
| -rw-r--r-- | drivers/scsi/scsi_transport_fc.c | 42 |
1 files changed, 22 insertions, 20 deletions
diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c index f2db7a41cf1..b03aa85108e 100644 --- a/drivers/scsi/scsi_transport_fc.c +++ b/drivers/scsi/scsi_transport_fc.c @@ -368,7 +368,7 @@ static DECLARE_TRANSPORT_CLASS(fc_rport_class, * should insulate the loss of a remote port. * The maximum will be capped by the value of SCSI_DEVICE_BLOCK_MAX_TIMEOUT. */ -static unsigned int fc_dev_loss_tmo = SCSI_DEVICE_BLOCK_MAX_TIMEOUT; +static unsigned int fc_dev_loss_tmo = 60; /* seconds */ module_param_named(dev_loss_tmo, fc_dev_loss_tmo, int, S_IRUGO|S_IWUSR); MODULE_PARM_DESC(dev_loss_tmo, @@ -1284,7 +1284,9 @@ EXPORT_SYMBOL(fc_release_transport); * @work: Work to queue for execution. * * Return value: - * 0 on success / != 0 for error + * 1 - work queued for execution + * 0 - work is already queued + * -EINVAL - work queue doesn't exist **/ static int fc_queue_work(struct Scsi_Host *shost, struct work_struct *work) @@ -1434,8 +1436,6 @@ fc_starget_delete(void *data) struct Scsi_Host *shost = rport_to_shost(rport); unsigned long flags; - scsi_target_unblock(&rport->dev); - spin_lock_irqsave(shost->host_lock, flags); if (rport->flags & FC_RPORT_DEVLOSS_PENDING) { spin_unlock_irqrestore(shost->host_lock, flags); @@ -1476,7 +1476,8 @@ fc_rport_final_delete(void *data) transport_remove_device(dev); device_del(dev); transport_destroy_device(dev); - put_device(&shost->shost_gendev); + put_device(&shost->shost_gendev); /* for fc_host->rport list */ + put_device(dev); /* for self-reference */ } @@ -1537,13 +1538,13 @@ fc_rport_create(struct Scsi_Host *shost, int channel, else rport->scsi_target_id = -1; list_add_tail(&rport->peers, &fc_host->rports); - get_device(&shost->shost_gendev); + get_device(&shost->shost_gendev); /* for fc_host->rport list */ spin_unlock_irqrestore(shost->host_lock, flags); dev = &rport->dev; - device_initialize(dev); - dev->parent = get_device(&shost->shost_gendev); + device_initialize(dev); /* takes self reference */ + dev->parent = get_device(&shost->shost_gendev); /* parent reference */ dev->release = fc_rport_dev_release; sprintf(dev->bus_id, "rport-%d:%d-%d", shost->host_no, channel, rport->number); @@ -1567,10 +1568,9 @@ fc_rport_create(struct Scsi_Host *shost, int channel, delete_rport: transport_destroy_device(dev); - put_device(dev->parent); spin_lock_irqsave(shost->host_lock, flags); list_del(&rport->peers); - put_device(&shost->shost_gendev); + put_device(&shost->shost_gendev); /* for fc_host->rport list */ spin_unlock_irqrestore(shost->host_lock, flags); put_device(dev->parent); kfree(rport); @@ -1707,6 +1707,8 @@ fc_remote_port_add(struct Scsi_Host *shost, int channel, spin_unlock_irqrestore(shost->host_lock, flags); + scsi_target_unblock(&rport->dev); + return rport; } } @@ -1762,9 +1764,10 @@ fc_remote_port_add(struct Scsi_Host *shost, int channel, /* initiate a scan of the target */ rport->flags |= FC_RPORT_SCAN_PENDING; scsi_queue_work(shost, &rport->scan_work); - } - - spin_unlock_irqrestore(shost->host_lock, flags); + spin_unlock_irqrestore(shost->host_lock, flags); + scsi_target_unblock(&rport->dev); + } else + spin_unlock_irqrestore(shost->host_lock, flags); return rport; } @@ -1938,6 +1941,7 @@ fc_remote_port_rolechg(struct fc_rport *rport, u32 roles) rport->flags |= FC_RPORT_SCAN_PENDING; scsi_queue_work(shost, &rport->scan_work); spin_unlock_irqrestore(shost->host_lock, flags); + scsi_target_unblock(&rport->dev); } } EXPORT_SYMBOL(fc_remote_port_rolechg); @@ -1970,8 +1974,9 @@ fc_timeout_deleted_rport(void *data) dev_printk(KERN_ERR, &rport->dev, "blocked FC remote port time out: no longer" " a FCP target, removing starget\n"); - fc_queue_work(shost, &rport->stgt_delete_work); spin_unlock_irqrestore(shost->host_lock, flags); + scsi_target_unblock(&rport->dev); + fc_queue_work(shost, &rport->stgt_delete_work); return; } @@ -2035,17 +2040,15 @@ fc_timeout_deleted_rport(void *data) * went away and didn't come back - we'll remove * all attached scsi devices. */ - fc_queue_work(shost, &rport->stgt_delete_work); - spin_unlock_irqrestore(shost->host_lock, flags); + + scsi_target_unblock(&rport->dev); + fc_queue_work(shost, &rport->stgt_delete_work); } /** * fc_scsi_scan_rport - called to perform a scsi scan on a remote port. * - * Will unblock the target (in case it went away and has now come back), - * then invoke a scan. - * * @data: remote port to be scanned. **/ static void @@ -2057,7 +2060,6 @@ fc_scsi_scan_rport(void *data) if ((rport->port_state == FC_PORTSTATE_ONLINE) && (rport->roles & FC_RPORT_ROLE_FCP_TARGET)) { - scsi_target_unblock(&rport->dev); scsi_scan_target(&rport->dev, rport->channel, rport->scsi_target_id, SCAN_WILD_CARD, 1); } |