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    Subject[PATCH 5.18 808/879] mmc: core: Allows to override the timeout value for ioctl() path
    Date
    From: Bean Huo <beanhuo@micron.com>

    commit 23e09be254f95a5b75cd87f91a4014f3b46dda3f upstream.

    Occasionally, user-land applications initiate longer timeout values for certain commands
    through ioctl() system call. But so far we are still using a fixed timeout of 10 seconds
    in mmc_poll_for_busy() on the ioctl() path, even if a custom timeout is specified in the
    userspace application. This patch allows custom timeout values to override this default
    timeout values on the ioctl path.

    Cc: stable <stable@vger.kernel.org>
    Signed-off-by: Bean Huo <beanhuo@micron.com>
    Acked-by: Avri Altman <avri.altman@wdc.com>
    Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
    Link: https://lore.kernel.org/r/20220423221623.1074556-3-huobean@gmail.com
    Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    drivers/mmc/core/block.c | 8 ++++----
    1 file changed, 4 insertions(+), 4 deletions(-)

    --- a/drivers/mmc/core/block.c
    +++ b/drivers/mmc/core/block.c
    @@ -609,11 +609,11 @@ static int __mmc_blk_ioctl_cmd(struct mm

    if (idata->rpmb || (cmd.flags & MMC_RSP_R1B) == MMC_RSP_R1B) {
    /*
    - * Ensure RPMB/R1B command has completed by polling CMD13
    - * "Send Status".
    + * Ensure RPMB/R1B command has completed by polling CMD13 "Send Status". Here we
    + * allow to override the default timeout value if a custom timeout is specified.
    */
    - err = mmc_poll_for_busy(card, MMC_BLK_TIMEOUT_MS, false,
    - MMC_BUSY_IO);
    + err = mmc_poll_for_busy(card, idata->ic.cmd_timeout_ms ? : MMC_BLK_TIMEOUT_MS,
    + false, MMC_BUSY_IO);
    }

    return err;

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