37 lines
1.5 KiB
Diff
37 lines
1.5 KiB
Diff
|
From a5ba30016f4a29f5875112169a92a28a9ba7f5c9 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Hans de Goede <hdegoede@redhat.com>
|
||
|
|
Date: Mon, 25 May 2015 11:59:03 +0200
|
||
|
|
Subject: [PATCH] mtd: nand: sunxi: Add NAND_BBT_CREATE_EMPTY to bbt_options
|
||
|
|
|
||
|
|
The ftl format used by the Allwinner Android kernels, with which most
|
||
|
|
Allwinnner devices ship, overrides the factory bad block markers, and
|
||
|
|
fills the oob data with a pattern which causes a lot of false bad block
|
||
|
|
positives, so when we first create a bbt table, start with an empty one
|
||
|
|
to avoid marking a ton of blocks as bad from the start.
|
||
|
|
|
||
|
|
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
|
||
|
|
---
|
||
|
|
drivers/mtd/nand/sunxi_nand.c | 9 +++++++++
|
||
|
|
1 file changed, 9 insertions(+)
|
||
|
|
|
||
|
|
diff --git a/drivers/mtd/nand/sunxi_nand.c b/drivers/mtd/nand/sunxi_nand.c
|
||
|
|
index 74f2caf..72ab770 100644
|
||
|
|
--- a/drivers/mtd/nand/sunxi_nand.c
|
||
|
|
+++ b/drivers/mtd/nand/sunxi_nand.c
|
||
|
|
@@ -1853,6 +1853,15 @@ static int sunxi_nand_chip_init(struct device *dev, struct sunxi_nfc *nfc,
|
||
|
|
if (of_get_nand_on_flash_bbt(np))
|
||
|
|
nand->bbt_options |= NAND_BBT_USE_FLASH | NAND_BBT_NO_OOB;
|
||
|
|
|
||
|
|
+ /*
|
||
|
|
+ * The ftl format used by the Allwinner Android kernels overrides
|
||
|
|
+ * the factory bad block markers, and fills the oob data with a
|
||
|
|
+ * pattern which causes a lot of false bad block positives, so
|
||
|
|
+ * when we first create a bbt table, start with an empty one
|
||
|
|
+ * to avoid marking a ton of blocks as bad from the start.
|
||
|
|
+ */
|
||
|
|
+ nand->bbt_options |= NAND_BBT_CREATE_EMPTY;
|
||
|
|
+
|
||
|
|
mtd = &chip->mtd;
|
||
|
|
mtd->dev.parent = dev;
|
||
|
|
mtd->priv = nand;
|