Minor updates as a precursor to fixing sbp_targ

firewire.c -- expand a comment and repair a typo
sbp.h -- define Logical Unit Reset so it can be used in sbp_targ

Reviewed by:	scottl@freebsd.org

sys/dev/firewire/firewire.c

@@ -1641,7 +1641,11 @@ fw_explore_node(struct fw_device *dfwdev)
 				break;
 				
 		}
-		/* inesrt into sorted fwdev list */
+
+		/*
+		 * If the fwdev is not found in the 
+		 * fc->devices TAILQ, then we will add it.
+		 */
 		pfwdev = NULL;
 		STAILQ_FOREACH(tfwdev, &fc->devices, link) {
 			if (tfwdev->eui.hi > fwdev->eui.hi ||

sys/dev/firewire/sbp.h

@@ -121,7 +121,7 @@ struct sbp_status{
 /*   3: Page size not supported */
 /*   4: Access denied */
 #define STATUS_ACCESS_DENY	4
-/*   5: Logical unit not supported */
+#define STATUS_LUR		5
 /*   6: Maximum payload too small */
 /*   7: Reserved for future standardization */
 /*   8: Resource unavailabe */