diff options
Diffstat (limited to 'target/linux/sunxi/patches-4.1/125-mtd-nand-sunxi-extend-bbt_options.patch')
| -rw-r--r-- | target/linux/sunxi/patches-4.1/125-mtd-nand-sunxi-extend-bbt_options.patch | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/target/linux/sunxi/patches-4.1/125-mtd-nand-sunxi-extend-bbt_options.patch b/target/linux/sunxi/patches-4.1/125-mtd-nand-sunxi-extend-bbt_options.patch new file mode 100644 index 0000000..136cabc --- /dev/null +++ b/target/linux/sunxi/patches-4.1/125-mtd-nand-sunxi-extend-bbt_options.patch @@ -0,0 +1,34 @@ +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(+) + +--- a/drivers/mtd/nand/sunxi_nand.c ++++ b/drivers/mtd/nand/sunxi_nand.c +@@ -1851,6 +1851,15 @@ static int sunxi_nand_chip_init(struct d + 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; |