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    SubjectRe: [PATCH] mmc: block: disable the reliable write If the card does not support CMD23
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    On 14 August 2015 at 09:30,  <sdliyong@gmail.com> wrote:
    > From: Yong Li <sdliyong@gmail.com>
    >
    > Signed-off-by: Yong Li <sdliyong@gmail.com>
    > ---
    > drivers/mmc/card/block.c | 3 ++-
    > 1 file changed, 2 insertions(+), 1 deletion(-)
    >
    > diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
    > index 452782b..d9e3c45 100644
    > --- a/drivers/mmc/card/block.c
    > +++ b/drivers/mmc/card/block.c
    > @@ -1366,7 +1366,8 @@ static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq,
    > bool do_rel_wr = ((req->cmd_flags & REQ_FUA) ||
    > (req->cmd_flags & REQ_META)) &&
    > (rq_data_dir(req) == WRITE) &&
    > - (md->flags & MMC_BLK_REL_WR);
    > + (md->flags & MMC_BLK_REL_WR) &&
    > + !(card->quirks & MMC_QUIRK_BLK_NO_CMD23);

    Further down in mmc_blk_rw_rq_prep() we check for
    MMC_QUIRK_BLK_NO_CMD23. That check becomes redundant after this
    change, please remove that check as a part of this patch as well.

    >
    > memset(brq, 0, sizeof(struct mmc_blk_request));
    > brq->mrq.cmd = &brq->cmd;
    > --
    > 2.1.0
    >

    Kind regards
    Uffe


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