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[PATCH] libata irq-pio: rename atapi_packet_task() and comments

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Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
This commit is contained in:
Albert Lee 2005-09-30 19:09:31 +08:00 • committed by Jeff Garzik
parent c56b14d2a3
commit f9997be974
2 changed files with 16 additions and 15 deletions
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25
drivers/scsi/libata-core.c
View file

@ -3416,7 +3416,7 @@ 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->packet_task);
queue_work(ata_wq, &ap->dataout_task);
/* send first data block by polling */
} else {
@ -3440,7 +3440,7 @@ 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->packet_task);
queue_work(ata_wq, &ap->dataout_task);
break;
case ATA_PROT_ATAPI_DMA:
@ -3452,7 +3452,7 @@ 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->packet_task);
queue_work(ata_wq, &ap->dataout_task);
break;
default:
@ -3952,20 +3952,21 @@ irqreturn_t ata_interrupt (int irq, void *dev_instance, struct pt_regs *regs)
}
/**
* atapi_packet_task - Write CDB bytes to hardware
* @_data: Port to which ATAPI device is attached.
* ata_dataout_task - Write first data block to hardware
* @_data: Port to which ATA/ATAPI device is attached.
*
* When device has indicated its readiness to accept
* a CDB, this function is called. Send the CDB.
* If DMA is to be performed, exit immediately.
* Otherwise, we are in polling mode, so poll
* status under operation succeeds or fails.
* the data, this function sends out the CDB or
* the first data block by PIO.
* After this,
* - If polling, ata_pio_task() handles the rest.
* - Otherwise, interrupt handler takes over.
*
* LOCKING:
* Kernel thread context (may sleep)
*/
static void atapi_packet_task(void *_data)
static void ata_dataout_task(void *_data)
{
struct ata_port *ap = _data;
struct ata_queued_cmd *qc;
@ -3978,7 +3979,7 @@ static void atapi_packet_task(void *_data)
/* sleep-wait for BSY to clear */
DPRINTK("busy wait\n");
if (ata_busy_sleep(ap, ATA_TMOUT_CDB_QUICK, ATA_TMOUT_CDB))
if (ata_busy_sleep(ap, ATA_TMOUT_DATAOUT_QUICK, ATA_TMOUT_DATAOUT))
goto err_out;
/* make sure DRQ is set */
@ -4141,7 +4142,7 @@ 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->packet_task, atapi_packet_task, ap);
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++)

6
include/linux/libata.h
View file

@ -129,8 +129,8 @@ enum {
ATA_TMOUT_PIO = 30 * HZ,
ATA_TMOUT_BOOT = 30 * HZ, /* hueristic */
ATA_TMOUT_BOOT_QUICK = 7 * HZ, /* hueristic */
ATA_TMOUT_CDB = 30 * HZ,
ATA_TMOUT_CDB_QUICK = 5 * HZ,
ATA_TMOUT_DATAOUT = 30 * HZ,
ATA_TMOUT_DATAOUT_QUICK = 5 * HZ,
/* ATA bus states */
BUS_UNKNOWN = 0,
@ -319,7 +319,7 @@ struct ata_port {
struct ata_host_stats stats;
struct ata_host_set *host_set;
struct work_struct packet_task;
struct work_struct dataout_task;
struct work_struct pio_task;
unsigned int hsm_task_state;