[SCSI] make supported_mode default to initiator.

if shost->supported mode is zero (i.e. MODE_UNKNOWN) show it as
initiator (it's obviously an unconverted driver that won't do target).
Acked-by: NFUJITA Tomonori <tomof@acm.org>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

drivers/scsi/hosts.c

@@ -345,6 +345,12 @@ struct Scsi_Host *scsi_host_alloc(struct scsi_host_template *sht, int privsize)
 	shost->active_mode = sht->supported_mode;
 	shost->use_sg_chaining = sht->use_sg_chaining;
 
+	if (sht->supported_mode == MODE_UNKNOWN)
+		/* means we didn't set it ... default to INITIATOR */
+		shost->active_mode = MODE_INITIATOR;
+	else
+		shost->active_mode = sht->supported_mode;
+
 	if (sht->max_host_blocked)
 		shost->max_host_blocked = sht->max_host_blocked;
 	else

drivers/scsi/scsi_sysfs.c

@@ -209,11 +209,13 @@ show_shost_mode(unsigned int mode, char *buf)
 static ssize_t show_shost_supported_mode(struct class_device *class_dev, char *buf)
 {
 	struct Scsi_Host *shost = class_to_shost(class_dev);
+	unsigned int supported_mode = shost->hostt->supported_mode;
 
-	if (shost->hostt->supported_mode == MODE_UNKNOWN)
-		return snprintf(buf, 20, "unknown\n");
-	else
-		return show_shost_mode(shost->hostt->supported_mode, buf);
+	if (supported_mode == MODE_UNKNOWN)
+		/* by default this should be initiator */
+		supported_mode = MODE_INITIATOR;
+
+	return show_shost_mode(supported_mode, buf);
 }
 
 static CLASS_DEVICE_ATTR(supported_mode, S_IRUGO | S_IWUSR, show_shost_supported_mode, NULL);