[Bugfix][API-584]reduce ubi problem

Change-Id: I699ddb0a73c652acad7d5119841599f3e0a933d0
diff --git a/src/kernel/linux/v4.19/drivers/mtd/nandx/core/nfi/nfi_base.c b/src/kernel/linux/v4.19/drivers/mtd/nandx/core/nfi/nfi_base.c
index 679a426..7126bf0 100644
--- a/src/kernel/linux/v4.19/drivers/mtd/nandx/core/nfi/nfi_base.c
+++ b/src/kernel/linux/v4.19/drivers/mtd/nandx/core/nfi/nfi_base.c
@@ -1135,11 +1135,18 @@
 		}
 	}
 
-	if (read && nb->read_status == -ENANDREAD) {
-		is_empty = nb->is_page_empty(nb, data, fdm,
-					     nb->rw_sectors);
-		if (is_empty)
-			nb->read_status = 0;
+	if (read) {
+		is_empty = nb->is_page_empty(nb, data, fdm, nb->rw_sectors);
+		if (is_empty) {
+ 			nb->read_status = 0;
+
+			/* try to memset 0xff for empty page */
+			if (data)
+				memset(data, 0xff, nb->access_len);
+			if (nb->ecc_en && fdm)
+				memset(fdm, 0xff, nb->nfi.fdm_size * nb->rw_sectors);
+		}
+
 	}
 
 	/* whether it's reading or writing, we all check if nee swap