This is a note to let you know that I've just added the patch titled
mmc: block: Retry commands in CQE error recovery
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mmc-block-retry-commands-in-cqe-error-recovery.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 10e473cfdc94ed0e58f2f7b01b4f5f654b7befde
Author: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Date: Fri Nov 3 10:47:18 2023 +0200
mmc: block: Retry commands in CQE error recovery
[ Upstream commit 8155d1fa3a747baad5caff5f8303321d68ddd48c ]
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: 72a5af554df8 ("mmc: core: Add support for handling CQE requests")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Reviewed-by: Avri Altman <avri.altman@xxxxxxx>
Link: https://lore.kernel.org/r/20231103084720.6886-5-adrian.hunter@xxxxxxxxx
Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index d76184e4377ef..3c299417c4abc 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -571,7 +571,7 @@ 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;
@@ -579,10 +579,13 @@ 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;
