diff --git a/drivers/mtd/sm_ftl.c b/drivers/mtd/sm_ftl.c
index 4c21589..67822cf 100644
--- a/drivers/mtd/sm_ftl.c
+++ b/drivers/mtd/sm_ftl.c
@@ -934,7 +934,7 @@
 
 
 	/* Try to read all unread areas of the cache block*/
-	for_each_bit(sector_num, &ftl->cache_data_invalid_bitmap,
+	for_each_set_bit(sector_num, &ftl->cache_data_invalid_bitmap,
 		ftl->block_size / SM_SECTOR_SIZE) {
 
 		if (!sm_read_sector(ftl,