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mmc: block: Do not lose cache flush during CQE error recovery

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commit 174925d340 upstream.

During CQE error recovery, error-free data commands get requeued if there
is any data left to transfer, but non-data commands are completed even
though they have not been processed.  Requeue them instead.

Note the only non-data command is cache flush, which would have resulted in
a cache flush being lost if it was queued at the time of CQE recovery.

Fixes: 1e8e55b670 ("mmc: block: Add CQE support")
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/20231103084720.6886-2-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 10:47:15 +02:00 committed by Greg Kroah-Hartman
parent 3e04ce4b25
commit c77590974d
1 changed files with 2 additions and 0 deletions
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2
drivers/mmc/core/block.c
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@ -1482,6 +1482,8 @@ static void mmc_blk_cqe_complete_rq(struct mmc_queue *mq, struct request *req)
blk_mq_requeue_request(req, true);
else
__blk_mq_end_request(req, BLK_STS_OK);
} else if (mq->in_recovery) {
blk_mq_requeue_request(req, true);
} else {
blk_mq_end_request(req, BLK_STS_OK);
}