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    Subject[PATCH 1/3] mtd: m25p80: disable SST software protection bits by default
    Date
    From: Graf Yang <graf.yang@analog.com>

    The SST SPI flashes is like Atmel SPI flashes in that the software
    protection bits are set by default at power up, so clear them at init
    time.

    Signed-off-by: Graf Yang <graf.yang@analog.com>
    Signed-off-by: Mike Frysinger <vapier@gentoo.org>
    ---
    drivers/mtd/devices/m25p80.c | 7 ++++---
    1 files changed, 4 insertions(+), 3 deletions(-)

    diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
    index 379c316..933267a 100644
    --- a/drivers/mtd/devices/m25p80.c
    +++ b/drivers/mtd/devices/m25p80.c
    @@ -775,11 +775,12 @@ static int __devinit m25p_probe(struct spi_device *spi)
    dev_set_drvdata(&spi->dev, flash);

    /*
    - * Atmel serial flash tend to power up
    - * with the software protection bits set
    + * Atmel and SST serial flash tend to power
    + * up with the software protection bits set
    */

    - if (info->jedec_id >> 16 == 0x1f) {
    + if (info->jedec_id >> 16 == 0x1f ||
    + info->jedec_id >> 16 == 0xbf) {
    write_enable(flash);
    write_sr(flash, 0);
    }
    --
    1.6.5.rc2


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