diff --git a/lib/lmb.c b/lib/lmb.c
index 6390d63a2a0ea7b22381a23d4eb97bd73de61320..e34a9e586c424a3e4e55508c4048115ee6ededf6 100644
--- a/lib/lmb.c
+++ b/lib/lmb.c
@@ -134,6 +134,12 @@ static long __init lmb_add_region(struct lmb_region *rgn, unsigned long base,
 	unsigned long coalesced = 0;
 	long adjacent, i;
 
+	if ((rgn->cnt == 1) && (rgn->region[0].size == 0)) {
+		rgn->region[0].base = base;
+		rgn->region[0].size = size;
+		return 0;
+	}
+
 	/* First try and coalesce this LMB with another. */
 	for (i=0; i < rgn->cnt; i++) {
 		unsigned long rgnbase = rgn->region[i].base;