diff --git a/drivers/base/regmap/regcache-rbtree.c b/drivers/base/regmap/regcache-rbtree.c
index bae183c..313c20f 100644
--- a/drivers/base/regmap/regcache-rbtree.c
+++ b/drivers/base/regmap/regcache-rbtree.c
@@ -379,7 +379,7 @@
 		if (rbnode->base_reg + rbnode->blklen < min)
 			continue;
 
-		if (min < rbnode->base_reg + rbnode->blklen)
+		if (min > rbnode->base_reg)
 			base = min - rbnode->base_reg;
 		else
 			base = 0;