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    Subject[patch v5 02/16] MMC: S3C24XX MMC/SD driver write fixes
    From: Harald Welte <laforge@openmoko.org>

    This patch is a workaround of some S3C2410 MMC chip bug

    Signed-off-by: Ben Dooks <ben-linux@fluff.org>

    Index: linux-2.6.26-rc8-next20080627/drivers/mmc/host/s3cmci.c
    ===================================================================
    --- linux-2.6.26-rc8-next20080627.orig/drivers/mmc/host/s3cmci.c 2008-06-30 12:18:49.000000000 +0100
    +++ linux-2.6.26-rc8-next20080627/drivers/mmc/host/s3cmci.c 2008-06-30 12:19:04.000000000 +0100
    @@ -461,9 +461,19 @@ static irqreturn_t s3cmci_irq(int irq, v

    if (mci_csta & S3C2410_SDICMDSTAT_CRCFAIL) {
    if (cmd->flags & MMC_RSP_CRC) {
    - cmd->error = -EILSEQ;
    - host->status = "error: bad command crc";
    - goto fail_transfer;
    + if (host->mrq->cmd->flags & MMC_RSP_136) {
    + dbg(host, dbg_irq,
    + "fixup: ignore CRC fail with long rsp\n");
    + } else {
    + /* note, we used to fail the transfer
    + * here, but it seems that this is just
    + * the hardware getting it wrong.
    + *
    + * cmd->error = -EILSEQ;
    + * host->status = "error: bad command crc";
    + * goto fail_transfer;
    + */
    + }
    }

    mci_cclear |= S3C2410_SDICMDSTAT_CRCFAIL;
    --
    Ben (ben@fluff.org, http://www.fluff.org/)

    'a smiley only costs 4 bytes'


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