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[PATCH] libata: kill unused pio_task and packet_task

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Kill unused pio_task and packet_task.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo 2006-03-05 15:29:09 +09:00 committed by Jeff Garzik
parent 8061f5f0a0
commit 507ceda003
2 changed files with 0 additions and 71 deletions
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68
drivers/scsi/libata-core.c
View file

@ -796,71 +796,6 @@ void ata_port_flush_task(struct ata_port *ap)
DPRINTK("EXIT\n");
}
static inline void
ata_queue_packet_task(struct ata_port *ap)
{
if (!(ap->flags & ATA_FLAG_FLUSH_PIO_TASK))
queue_work(ata_wq, &ap->packet_task);
}
static inline void
ata_queue_pio_task(struct ata_port *ap)
{
if (!(ap->flags & ATA_FLAG_FLUSH_PIO_TASK))
queue_work(ata_wq, &ap->pio_task);
}
static inline void
ata_queue_delayed_pio_task(struct ata_port *ap, unsigned long delay)
{
if (!(ap->flags & ATA_FLAG_FLUSH_PIO_TASK))
queue_delayed_work(ata_wq, &ap->pio_task, delay);
}
/**
* ata_flush_pio_tasks - Flush pio_task and packet_task
* @ap: the target ata_port
*
* After this function completes, pio_task and packet_task are
* guranteed not to be running or scheduled.
*
* LOCKING:
* Kernel thread context (may sleep)
*/
static void ata_flush_pio_tasks(struct ata_port *ap)
{
int tmp = 0;
unsigned long flags;
DPRINTK("ENTER\n");
spin_lock_irqsave(&ap->host_set->lock, flags);
ap->flags |= ATA_FLAG_FLUSH_PIO_TASK;
spin_unlock_irqrestore(&ap->host_set->lock, flags);
DPRINTK("flush #1\n");
flush_workqueue(ata_wq);
/*
* At this point, if a task is running, it's guaranteed to see
* the FLUSH flag; thus, it will never queue pio tasks again.
* Cancel and flush.
*/
tmp |= cancel_delayed_work(&ap->pio_task);
tmp |= cancel_delayed_work(&ap->packet_task);
if (!tmp) {
DPRINTK("flush #2\n");
flush_workqueue(ata_wq);
}
spin_lock_irqsave(&ap->host_set->lock, flags);
ap->flags &= ~ATA_FLAG_FLUSH_PIO_TASK;
spin_unlock_irqrestore(&ap->host_set->lock, flags);
DPRINTK("EXIT\n");
}
void ata_qc_complete_internal(struct ata_queued_cmd *qc)
{
struct completion *waiting = qc->private_data;
@ -3814,7 +3749,6 @@ static void ata_qc_timeout(struct ata_queued_cmd *qc)
DPRINTK("ENTER\n");
ata_flush_pio_tasks(ap);
ap->hsm_task_state = HSM_ST_IDLE;
spin_lock_irqsave(&host_set->lock, flags);
@ -4693,8 +4627,6 @@ static void ata_host_init(struct ata_port *ap, struct Scsi_Host *host,
ap->last_ctl = 0xFF;
INIT_WORK(&ap->port_task, NULL, NULL);
INIT_WORK(&ap->packet_task, atapi_packet_task, ap);
INIT_WORK(&ap->pio_task, ata_pio_task, ap);
INIT_LIST_HEAD(&ap->eh_done_q);
for (i = 0; i < ATA_MAX_DEVICES; i++)

3
include/linux/libata.h
View file

@ -390,9 +390,6 @@ struct ata_port {
struct work_struct port_task;
struct work_struct packet_task;
struct work_struct pio_task;
unsigned int hsm_task_state;
unsigned long pio_task_timeout;