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    Subject[PATCH 5/7] mmc: at91_mci: enable large data blocks
    Date
    From: Wolfgang Muees <wolfgang.mues@auerswald.de>

    This patch is setting some max_ variables for the IO elevator, so the elevator
    will put requests for large data blocks to the driver. This is critical for
    a) speed
    and
    b) wear leveling of the flash chip controller: Otherwise the controller will
    treat the SD card badly with millions of single 4 KByte write commands. This
    will lead to a shorter life time for the SD cards.

    Signed-off-by: Wolfgang Muees <wolfgang.mues@auerswald.de>
    Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
    ---
    drivers/mmc/host/at91_mci.c | 3 +++
    1 files changed, 3 insertions(+), 0 deletions(-)

    diff --git a/drivers/mmc/host/at91_mci.c b/drivers/mmc/host/at91_mci.c
    index 28fd565..4c30c56 100644
    --- a/drivers/mmc/host/at91_mci.c
    +++ b/drivers/mmc/host/at91_mci.c
    @@ -934,6 +934,9 @@ static int __init at91_mci_probe(struct platform_device *pdev)
    mmc->max_blk_size = MCI_MAXBLKSIZE;
    mmc->max_blk_count = MCI_BLKATONCE;
    mmc->max_req_size = MCI_BUFSIZE;
    + mmc->max_phys_segs = MCI_BLKATONCE;
    + mmc->max_hw_segs = MCI_BLKATONCE;
    + mmc->max_seg_size = MCI_BUFSIZE;

    host = mmc_priv(mmc);
    host->mmc = mmc;
    --
    1.5.6.5


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