#define SCSI_SCAN_TARGET_PRESENT 1
#define SCSI_SCAN_LUN_PRESENT 2
-static char *scsi_null_device_strs = "nullnullnullnull";
+static const char *scsi_null_device_strs = "nullnullnullnull";
#define MAX_SCSI_LUNS 512
/*
* if LLDD reports slave not present, don't clutter
* console with alloc failure messages
-
-
*/
if (ret == -ENXIO)
display_failure_msg = 0;
return found_target;
}
+struct work_queue_wrapper {
+ struct work_struct work;
+ struct scsi_target *starget;
+};
+
+static void scsi_target_reap_work(void *data) {
+ struct work_queue_wrapper *wqw = (struct work_queue_wrapper *)data;
+ struct scsi_target *starget = wqw->starget;
+ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+ unsigned long flags;
+
+ kfree(wqw);
+
+ spin_lock_irqsave(shost->host_lock, flags);
+
+ if (--starget->reap_ref == 0 && list_empty(&starget->devices)) {
+ list_del_init(&starget->siblings);
+ spin_unlock_irqrestore(shost->host_lock, flags);
+ transport_remove_device(&starget->dev);
+ device_del(&starget->dev);
+ transport_destroy_device(&starget->dev);
+ put_device(&starget->dev);
+ return;
+
+ }
+ spin_unlock_irqrestore(shost->host_lock, flags);
+
+ return;
+}
+
/**
* scsi_target_reap - check to see if target is in use and destroy if not
*
*/
void scsi_target_reap(struct scsi_target *starget)
{
- struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
- unsigned long flags;
- spin_lock_irqsave(shost->host_lock, flags);
+ struct work_queue_wrapper *wqw =
+ kzalloc(sizeof(struct work_queue_wrapper), GFP_ATOMIC);
- if (--starget->reap_ref == 0 && list_empty(&starget->devices)) {
- list_del_init(&starget->siblings);
- spin_unlock_irqrestore(shost->host_lock, flags);
- device_del(&starget->dev);
- transport_unregister_device(&starget->dev);
- put_device(&starget->dev);
+ if (!wqw) {
+ starget_printk(KERN_ERR, starget,
+ "Failed to allocate memory in scsi_reap_target()\n");
return;
}
- spin_unlock_irqrestore(shost->host_lock, flags);
+
+ INIT_WORK(&wqw->work, scsi_target_reap_work, wqw);
+ wqw->starget = starget;
+ schedule_work(&wqw->work);
}
/**
return ERR_PTR(-ENOMEM);
get_device(&starget->dev);
- down(&shost->scan_mutex);
+ mutex_lock(&shost->scan_mutex);
if (scsi_host_scan_allowed(shost)) {
res = scsi_probe_and_add_lun(starget, lun, NULL, &sdev, 1,
hostdata);
if (res != SCSI_SCAN_LUN_PRESENT)
sdev = ERR_PTR(-ENODEV);
}
- up(&shost->scan_mutex);
+ mutex_unlock(&shost->scan_mutex);
scsi_target_reap(starget);
put_device(&starget->dev);
{
struct Scsi_Host *shost = dev_to_shost(parent);
- down(&shost->scan_mutex);
+ mutex_lock(&shost->scan_mutex);
if (scsi_host_scan_allowed(shost))
__scsi_scan_target(parent, channel, id, lun, rescan);
- up(&shost->scan_mutex);
+ mutex_unlock(&shost->scan_mutex);
}
EXPORT_SYMBOL(scsi_scan_target);
((lun != SCAN_WILD_CARD) && (lun > shost->max_lun)))
return -EINVAL;
- down(&shost->scan_mutex);
+ mutex_lock(&shost->scan_mutex);
if (scsi_host_scan_allowed(shost)) {
if (channel == SCAN_WILD_CARD)
for (channel = 0; channel <= shost->max_channel;
else
scsi_scan_channel(shost, channel, id, lun, rescan);
}
- up(&shost->scan_mutex);
+ mutex_unlock(&shost->scan_mutex);
return 0;
}
struct scsi_device *sdev = NULL;
struct scsi_target *starget;
- down(&shost->scan_mutex);
+ mutex_lock(&shost->scan_mutex);
if (!scsi_host_scan_allowed(shost))
goto out;
starget = scsi_alloc_target(&shost->shost_gendev, 0, shost->this_id);
}
put_device(&starget->dev);
out:
- up(&shost->scan_mutex);
+ mutex_unlock(&shost->scan_mutex);
return sdev;
}
EXPORT_SYMBOL(scsi_get_host_dev);