[PATCH] libata: kill unused pio_task and packet_task

Kill unused pio_task and packet_task.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 0 insertions, 68 deletions

diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index 16a108d2f9a9..2974438d3bb7 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -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++)