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SubjectRE: [PATCH V2 3/6] mmc: block: Be sure to wait while busy in CQE error recovery
Date
> 
> STOP command does not guarantee to wait while busy, but subsequent
> command MMC_CMDQ_TASK_MGMT to discard the queue will fail if the
> card is busy, so be sure to wait by employing mmc_poll_for_busy().
>
> Fixes: 72a5af554df8 ("mmc: core: Add support for handling CQE requests")
> Cc: stable@vger.kernel.org
> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>

> ---
> drivers/mmc/core/core.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index
> 3d3e0ca52614..befde2bd26d3 100644
> --- a/drivers/mmc/core/core.c
> +++ b/drivers/mmc/core/core.c
> @@ -553,6 +553,8 @@ int mmc_cqe_recovery(struct mmc_host *host)
> cmd.busy_timeout = MMC_CQE_RECOVERY_TIMEOUT;
> mmc_wait_for_cmd(host, &cmd, 0);
>
> + mmc_poll_for_busy(host->card, MMC_CQE_RECOVERY_TIMEOUT,
> true,
> + MMC_BUSY_IO);
> +
> memset(&cmd, 0, sizeof(cmd));
> cmd.opcode = MMC_CMDQ_TASK_MGMT;
> cmd.arg = 1; /* Discard entire queue */
> --
> 2.34.1

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