diff options
| -rw-r--r-- | drivers/scsi/libata-core.c | 46 |
1 files changed, 23 insertions, 23 deletions
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c index cf5a138cdde5..02a7a9eb464d 100644 --- a/drivers/scsi/libata-core.c +++ b/drivers/scsi/libata-core.c @@ -3407,24 +3407,24 @@ int ata_qc_issue_prot(struct ata_queued_cmd *qc) ata_tf_to_host_nolock(ap, &qc->tf); - if (qc->tf.flags & ATA_TFLAG_POLLING) { - /* polling PIO */ - ap->hsm_task_state = HSM_ST; - queue_work(ata_wq, &ap->pio_task); + if (qc->tf.flags & ATA_TFLAG_WRITE) { + /* PIO data out protocol */ + ap->hsm_task_state = HSM_ST_FIRST; + queue_work(ata_wq, &ap->dataout_task); + + /* always send first data block using + * the ata_dataout_task() codepath. + */ } else { - /* interrupt driven PIO */ - if (qc->tf.flags & ATA_TFLAG_WRITE) { - /* PIO data out protocol */ - ap->hsm_task_state = HSM_ST_FIRST; - queue_work(ata_wq, &ap->dataout_task); - - /* send first data block by polling */ - } else { - /* PIO data in protocol */ - ap->hsm_task_state = HSM_ST; - - /* interrupt handler takes over from here */ - } + /* PIO data in protocol */ + ap->hsm_task_state = HSM_ST; + + if (qc->tf.flags & ATA_TFLAG_POLLING) + queue_work(ata_wq, &ap->pio_task); + + /* if polling, ata_pio_task() handles the rest. + * otherwise, interrupt handler takes over from here. + */ } break; @@ -4005,15 +4005,15 @@ static void ata_dataout_task(void *_data) ap->hsm_task_state = HSM_ST; ata_pio_sector(qc); ata_altstatus(ap); /* flush */ - - /* interrupt handler takes over from here */ - } else { + } else /* send CDB */ atapi_send_cdb(ap, qc); - if (qc->tf.flags & ATA_TFLAG_POLLING) - queue_work(ata_wq, &ap->pio_task); - } + /* if polling, ata_pio_task() handles the rest. + * otherwise, interrupt handler takes over from here. + */ + if (qc->tf.flags & ATA_TFLAG_POLLING) + queue_work(ata_wq, &ap->pio_task); spin_unlock_irqrestore(&ap->host_set->lock, flags); |