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    Subject[PATCH 4.19 261/267] mtd: rawnand: brcmnand: fix hamming oob layout
    Date
    From: Álvaro Fernández Rojas <noltari@gmail.com>

    commit 130bbde4809b011faf64f99dddc14b4b01f440c3 upstream.

    First 2 bytes are used in large-page nand.

    Fixes: ef5eeea6e911 ("mtd: nand: brcm: switch to mtd_ooblayout_ops")
    Cc: stable@vger.kernel.org
    Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
    Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
    Link: https://lore.kernel.org/linux-mtd/20200512075733.745374-2-noltari@gmail.com
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/mtd/nand/raw/brcmnand/brcmnand.c | 11 +++++++----
    1 file changed, 7 insertions(+), 4 deletions(-)

    --- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c
    +++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
    @@ -911,11 +911,14 @@ static int brcmnand_hamming_ooblayout_fr
    if (!section) {
    /*
    * Small-page NAND use byte 6 for BBI while large-page
    - * NAND use byte 0.
    + * NAND use bytes 0 and 1.
    */
    - if (cfg->page_size > 512)
    - oobregion->offset++;
    - oobregion->length--;
    + if (cfg->page_size > 512) {
    + oobregion->offset += 2;
    + oobregion->length -= 2;
    + } else {
    + oobregion->length--;
    + }
    }
    }


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