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mmc: block: Retry commands in CQE error recovery 

commit 8155d1fa3a upstream.

It is important that MMC_CMDQ_TASK_MGMT command to discard the queue is
successful because otherwise a subsequent reset might fail to flush the
cache first.  Retry it and the previous STOP command.

Fixes: 72a5af554d ("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>
Link: https://lore.kernel.org/r/20231103084720.6886-5-adrian.hunter@intel.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Adrian Hunter 2023-11-03 10:47:18 +02:00 committed by Greg Kroah-Hartman
parent 3a9a9c256f
commit e121f6d73d
1 changed files with 5 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/mmc/core/core.c
View File

@ -552,7 +552,7 @@ int mmc_cqe_recovery(struct mmc_host *host)
cmd.flags = MMC_RSP_R1B | MMC_CMD_AC;
cmd.flags &= ~MMC_RSP_CRC; /* Ignore CRC */
cmd.busy_timeout = MMC_CQE_RECOVERY_TIMEOUT;
mmc_wait_for_cmd(host, &cmd, 0);
mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES);
memset(&cmd, 0, sizeof(cmd));
cmd.opcode = MMC_CMDQ_TASK_MGMT;
@ -560,10 +560,13 @@ int mmc_cqe_recovery(struct mmc_host *host)
cmd.flags = MMC_RSP_R1B | MMC_CMD_AC;
cmd.flags &= ~MMC_RSP_CRC; /* Ignore CRC */
cmd.busy_timeout = MMC_CQE_RECOVERY_TIMEOUT;
err = mmc_wait_for_cmd(host, &cmd, 0);
err = mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES);
host->cqe_ops->cqe_recovery_finish(host);
if (err)
err = mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES);
mmc_retune_release(host);
return err;