[SCSI] fix documentation for two functions

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c
index 166417a..2de5f3a 100644
--- a/drivers/scsi/scsi.c
+++ b/drivers/scsi/scsi.c
@@ -1225,8 +1225,8 @@
  * @starget:	SCSI target pointer
  * @lun:	SCSI Logical Unit Number
  *
- * Description: Looks up the scsi_device with the specified @channel, @id, @lun
- * for a given host.  The returned scsi_device has an additional reference that
+ * Description: Looks up the scsi_device with the specified @lun for a given
+ * @starget.  The returned scsi_device has an additional reference that
  * needs to be released with scsi_device_put once you're done with it.
  **/
 struct scsi_device *scsi_device_lookup_by_target(struct scsi_target *starget,