1 files changed, 15 insertions, 1 deletions

diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index 2d3c4ac475f2..48edd67982a5 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -336,9 +336,23 @@ static struct scsi_target *scsi_alloc_target(struct device *parent,
         unsigned long flags;
         const int size = sizeof(struct scsi_target)
                 + shost->transportt->target_size;
-        struct scsi_target *starget = kmalloc(size, GFP_ATOMIC);
+        struct scsi_target *starget;
         struct scsi_target *found_target;
 
+        /*
+         * Obtain the real parent from the transport. The transport
+         * is allowed to fail (no error) if there is nothing at that
+         * target id.
+         */
+        if (shost->transportt->target_parent) {
+                spin_lock_irqsave(shost->host_lock, flags);
+                parent = shost->transportt->target_parent(shost, channel, id);
+                spin_unlock_irqrestore(shost->host_lock, flags);
+                if (!parent)
+                        return NULL;
+        }
+
+        starget = kmalloc(size, GFP_KERNEL);
         if (!starget) {
                 printk(KERN_ERR "%s: allocation failure\n", __FUNCTION__);
                 return NULL;