target/linux/mvebu/patches-3.10/0093-mtd-get-the-ECC-info-from-the-parameter-page-for-ONF.patch

   1 From ceef2075f3aa430da137e3629b0280a46d420ccd Mon Sep 17 00:00:00 2001
   2 From: Huang Shijie <b32955@freescale.com>
   3 Date: Fri, 17 May 2013 11:17:26 +0800
   4 Subject: [PATCH 093/203] mtd: get the ECC info from the parameter page for
   5  ONFI nand
   6
   7 From the ONFI spec, we can just get the ECC info from the @ecc_bits field of
   8 the parameter page.
   9
  10 Signed-off-by: Huang Shijie <b32955@freescale.com>
  11 Reviewed-and-tested-by: Brian Norris <computersforpeace@gmail.com>
  12 Signed-off-by: Brian Norris <computersforpeace@gmail.com>
  13 Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
  14 ---
  15  drivers/mtd/nand/nand_base.c | 5 +++++
  16  1 file changed, 5 insertions(+)
  17
  18 --- a/drivers/mtd/nand/nand_base.c
  19 +++ b/drivers/mtd/nand/nand_base.c
  20 @@ -2924,6 +2924,11 @@ static int nand_flash_detect_onfi(struct
  21         if (le16_to_cpu(p->features) & 1)
  22                 *busw = NAND_BUSWIDTH_16;
  23
  24 +       if (p->ecc_bits != 0xff) {
  25 +               chip->ecc_strength_ds = p->ecc_bits;
  26 +               chip->ecc_step_ds = 512;
  27 +       }
  28 +
  29         pr_info("ONFI flash detected\n");
  30         return 1;
  31  }