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[PATCH] libata irq-pio: merge the ata_dataout_task workqueue with ata_pio_task workqueue 

- remove ap->dataout_task from struct ata_port
   - let ata_pio_task() handle the HSM_ST_FIRST state.
   - rename ata_dataout_task() to ata_pio_first_block()
   - replace the ata_dataout_task workqueue with ata_pio_task workqueue

Signed-off-by: Albert Lee <albertcc@tw.ibm.com>

========
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
This commit is contained in:
Albert Lee 2005-11-01 19:24:49 +08:00 committed by Jeff Garzik
parent 467b16d4be
commit e27486db89
2 changed files with 11 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
drivers/scsi/libata-core.c
View File

@ -3056,8 +3056,8 @@ static void atapi_send_cdb(struct ata_port *ap, struct ata_queued_cmd *qc)
}
/**
* ata_dataout_task - Write first data block to hardware
* @_data: Port to which ATA/ATAPI device is attached.
* ata_pio_first_block - Write first data block to hardware
* @ap: Port to which ATA/ATAPI device is attached.
*
* When device has indicated its readiness to accept
* the data, this function sends out the CDB or
@ -3070,9 +3070,8 @@ static void atapi_send_cdb(struct ata_port *ap, struct ata_queued_cmd *qc)
* Kernel thread context (may sleep)
*/
static void ata_dataout_task(void *_data)
static void ata_pio_first_block(struct ata_port *ap)
{
struct ata_port *ap = _data;
struct ata_queued_cmd *qc;
u8 status;
unsigned long flags;
@ -3346,6 +3345,10 @@ fsm_start:
qc_completed = 0;
switch (ap->hsm_task_state) {
case HSM_ST_FIRST:
ata_pio_first_block(ap);
return;
case HSM_ST:
ata_pio_block(ap);
break;
@ -3796,10 +3799,10 @@ int ata_qc_issue_prot(struct ata_queued_cmd *qc)
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);
queue_work(ata_wq, &ap->pio_task);
/* always send first data block using
* the ata_dataout_task() codepath.
* the ata_pio_task() codepath.
*/
} else {
/* PIO data in protocol */
@ -3826,7 +3829,7 @@ int ata_qc_issue_prot(struct ata_queued_cmd *qc)
/* send cdb by polling if no cdb interrupt */
if ((!(qc->dev->flags & ATA_DFLAG_CDB_INTR)) ||
(qc->tf.flags & ATA_TFLAG_POLLING))
queue_work(ata_wq, &ap->dataout_task);
queue_work(ata_wq, &ap->pio_task);
break;
case ATA_PROT_ATAPI_DMA:
@ -3838,7 +3841,7 @@ int ata_qc_issue_prot(struct ata_queued_cmd *qc)
/* send cdb by polling if no cdb interrupt */
if (!(qc->dev->flags & ATA_DFLAG_CDB_INTR))
queue_work(ata_wq, &ap->dataout_task);
queue_work(ata_wq, &ap->pio_task);
break;
default:
@ -4426,7 +4429,6 @@ static void ata_host_init(struct ata_port *ap, struct Scsi_Host *host,
ap->active_tag = ATA_TAG_POISON;
ap->last_ctl = 0xFF;
INIT_WORK(&ap->dataout_task, ata_dataout_task, ap);
INIT_WORK(&ap->pio_task, ata_pio_task, ap);
for (i = 0; i < ATA_MAX_DEVICES; i++)

2
include/linux/libata.h
View File

@ -346,8 +346,6 @@ struct ata_port {
struct ata_host_stats stats;
struct ata_host_set *host_set;
struct work_struct dataout_task;
struct work_struct pio_task;
unsigned int hsm_task_state;
unsigned long pio_task_timeout;