mxs_nand: don't check zero count when ECC reading with randomizer

When enabled randomizer during ECC reading, the controller reported it's
erased page. Checking zero count will cause data get modified to all
0xFF. Stop checking during randomizer to workaround this issue.

Signed-off-by: Han Xu <han.xu@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>

diff --git a/drivers/mtd/nand/raw/mxs_nand.c b/drivers/mtd/nand/raw/mxs_nand.c
index b6e65c6..3fd21e5 100644 (file)
--- a/drivers/mtd/nand/raw/mxs_nand.c
+++ b/drivers/mtd/nand/raw/mxs_nand.c
@@ -773,8 +773,9 @@ static int mxs_nand_ecc_read_page(struct mtd_info *mtd, struct nand_chip *nand,
                        continue;
 
                if (status[i] == 0xff) {
-                       if (is_mx6dqp() || is_mx7() ||
-                           is_mx6ul() || is_imx8() || is_imx8m())
+                       if (!nand_info->en_randomizer &&
+                           (is_mx6dqp() || is_mx7() || is_mx6ul() ||
+                            is_imx8() || is_imx8m()))
                                if (readl(&bch_regs->hw_bch_debug1))
                                        flag = 1;
                        continue;