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    Subject[PATCH 4.19 36/37] mmc: meson-mx-sdio: Set MMC_CAP_WAIT_WHILE_BUSY
    Date
    From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>

    commit e53b868b3cf5beeaa2f851ec6740112bf4d6a8cb upstream.

    The Meson SDIO controller uses the DAT0 lane for hardware busy
    detection. Set MMC_CAP_WAIT_WHILE_BUSY accordingly. This fixes
    the following error observed with Linux 5.7 (pre-rc-1):
    mmc1: Card stuck being busy! __mmc_poll_for_busy
    blk_update_request: I/O error, dev mmcblk1, sector 17111080 op
    0x3:(DISCARD) flags 0x0 phys_seg 1 prio class 0

    Fixes: ed80a13bb4c4c9 ("mmc: meson-mx-sdio: Add a driver for the Amlogic Meson8 and Meson8b SoCs")
    Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
    Cc: stable@vger.kernel.org
    Link: https://lore.kernel.org/r/20200416183513.993763-2-martin.blumenstingl@googlemail.com
    Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/mmc/host/meson-mx-sdio.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/drivers/mmc/host/meson-mx-sdio.c
    +++ b/drivers/mmc/host/meson-mx-sdio.c
    @@ -573,7 +573,7 @@ static int meson_mx_mmc_add_host(struct
    mmc->f_max = clk_round_rate(host->cfg_div_clk,
    clk_get_rate(host->parent_clk));

    - mmc->caps |= MMC_CAP_ERASE | MMC_CAP_CMD23;
    + mmc->caps |= MMC_CAP_ERASE | MMC_CAP_CMD23 | MMC_CAP_WAIT_WHILE_BUSY;
    mmc->ops = &meson_mx_mmc_ops;

    ret = mmc_of_parse(mmc);

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