---

yaml
---
r: 5751
b: refs/heads/master
c: 5c44cd2
h: refs/heads/master
i:
  5749: a9e875c
  5747: 90f02a9
  5743: 3a25018
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 9c472dd9197429a37691e91c938660a062bf20b0
+refs/heads/master: 5c44cd2afad3f7b015542187e147a820600172f1

trunk/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;

trunk/drivers/scsi/scsi_transport_fc.c

@@ -1022,6 +1022,23 @@ static int fc_rport_match(struct attribute_container *cont,
 	return &i->rport_attr_cont.ac == cont;
 }
 
+
+/*
+ * Must be called with shost->host_lock held
+ */
+static struct device *fc_target_parent(struct Scsi_Host *shost,
+					int channel, uint id)
+{
+	struct fc_rport *rport;
+
+	list_for_each_entry(rport, &fc_host_rports(shost), peers)
+		if ((rport->channel == channel) &&
+		    (rport->scsi_target_id == id))
+			return &rport->dev;
+
+	return NULL;
+}
+
 struct scsi_transport_template *
 fc_attach_transport(struct fc_function_template *ft)
 {
@@ -1057,6 +1074,8 @@ fc_attach_transport(struct fc_function_template *ft)
 
 	/* Transport uses the shost workq for scsi scanning */
 	i->t.create_work_queue = 1;
+
+	i->t.target_parent = fc_target_parent;
 
 	/*
 	 * Setup SCSI Target Attributes.

trunk/include/scsi/scsi_transport.h

@@ -29,6 +29,14 @@ struct scsi_transport_template {
 	struct transport_container target_attrs;
 	struct transport_container device_attrs;
 
+	/*
+	 * If set, call target_parent prior to allocating a scsi_target,
+	 * so we get the appropriate parent for the target. This function
+	 * is required for transports like FC and iSCSI that do not put the
+	 * scsi_target under scsi_host.
+	 */
+	struct device *(*target_parent)(struct Scsi_Host *, int, uint);
+
 	/* The size of the specific transport attribute structure (a
 	 * space of this size will be left at the end of the
 	 * scsi_* structure */