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| author | David S. Miller <davem@davemloft.net> | 2018-09-05 07:33:03 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-09-05 07:33:03 +0300 |
| commit | 36302685f59345959de96d0d70a5ad20a3a3451b (patch) | |
| tree | 778b3170acd1131840823520a4664f2bba343dbe /drivers/mmc/core/queue.c | |
| parent | 2fc4aa59ab470f1d5124b33c05680e2b2f2c6f65 (diff) | |
| parent | 28619527b8a712590c93d0a9e24b4425b9376a8c (diff) | |
| download | linux-36302685f59345959de96d0d70a5ad20a3a3451b.tar.xz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Diffstat (limited to 'drivers/mmc/core/queue.c')
| -rw-r--r-- | drivers/mmc/core/queue.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/mmc/core/queue.c b/drivers/mmc/core/queue.c index 648eb6743ed5..6edffeed9953 100644 --- a/drivers/mmc/core/queue.c +++ b/drivers/mmc/core/queue.c @@ -238,10 +238,6 @@ static void mmc_mq_exit_request(struct blk_mq_tag_set *set, struct request *req, mmc_exit_request(mq->queue, req); } -/* - * We use BLK_MQ_F_BLOCKING and have only 1 hardware queue, which means requests - * will not be dispatched in parallel. - */ static blk_status_t mmc_mq_queue_rq(struct blk_mq_hw_ctx *hctx, const struct blk_mq_queue_data *bd) { @@ -264,7 +260,7 @@ static blk_status_t mmc_mq_queue_rq(struct blk_mq_hw_ctx *hctx, spin_lock_irq(q->queue_lock); - if (mq->recovery_needed) { + if (mq->recovery_needed || mq->busy) { spin_unlock_irq(q->queue_lock); return BLK_STS_RESOURCE; } @@ -291,6 +287,9 @@ static blk_status_t mmc_mq_queue_rq(struct blk_mq_hw_ctx *hctx, break; } + /* Parallel dispatch of requests is not supported at the moment */ + mq->busy = true; + mq->in_flight[issue_type] += 1; get_card = (mmc_tot_in_flight(mq) == 1); cqe_retune_ok = (mmc_cqe_qcnt(mq) == 1); @@ -333,9 +332,12 @@ static blk_status_t mmc_mq_queue_rq(struct blk_mq_hw_ctx *hctx, mq->in_flight[issue_type] -= 1; if (mmc_tot_in_flight(mq) == 0) put_card = true; + mq->busy = false; spin_unlock_irq(q->queue_lock); if (put_card) mmc_put_card(card, &mq->ctx); + } else { + WRITE_ONCE(mq->busy, false); } return ret; |