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authorJeff Garzik <jeff@garzik.org>2007-12-01 16:18:56 -0500
committerJeff Garzik <jeff@garzik.org>2007-12-01 16:18:56 -0500
commitc99da91e7a12724127475a85cc7a38214b3504e2 (patch)
treede0eb3fe32ce58804457963fd133a53bb8fba5b8 /drivers/ata/libata-eh.c
parenta31e23e15cbb9734c5883a4a7f58d8712d303e0b (diff)
parent92d499d991ec4f5cbd00d6f33967eab9d3ee8d6c (diff)
Merge branch 'master' into upstream-fixes
Diffstat (limited to 'drivers/ata/libata-eh.c')
-rw-r--r--drivers/ata/libata-eh.c95
1 files changed, 0 insertions, 95 deletions
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index ed8813b222a0..0dac69db1fdf 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -559,101 +559,6 @@ void ata_port_wait_eh(struct ata_port *ap)
559 } 559 }
560} 560}
561 561
562/**
563 * ata_qc_timeout - Handle timeout of queued command
564 * @qc: Command that timed out
565 *
566 * Some part of the kernel (currently, only the SCSI layer)
567 * has noticed that the active command on port @ap has not
568 * completed after a specified length of time. Handle this
569 * condition by disabling DMA (if necessary) and completing
570 * transactions, with error if necessary.
571 *
572 * This also handles the case of the "lost interrupt", where
573 * for some reason (possibly hardware bug, possibly driver bug)
574 * an interrupt was not delivered to the driver, even though the
575 * transaction completed successfully.
576 *
577 * TODO: kill this function once old EH is gone.
578 *
579 * LOCKING:
580 * Inherited from SCSI layer (none, can sleep)
581 */
582static void ata_qc_timeout(struct ata_queued_cmd *qc)
583{
584 struct ata_port *ap = qc->ap;
585 u8 host_stat = 0, drv_stat;
586 unsigned long flags;
587
588 DPRINTK("ENTER\n");
589
590 ap->hsm_task_state = HSM_ST_IDLE;
591
592 spin_lock_irqsave(ap->lock, flags);
593
594 switch (qc->tf.protocol) {
595
596 case ATA_PROT_DMA:
597 case ATA_PROT_ATAPI_DMA:
598 host_stat = ap->ops->bmdma_status(ap);
599
600 /* before we do anything else, clear DMA-Start bit */
601 ap->ops->bmdma_stop(qc);
602
603 /* fall through */
604
605 default:
606 ata_altstatus(ap);
607 drv_stat = ata_chk_status(ap);
608
609 /* ack bmdma irq events */
610 ap->ops->irq_clear(ap);
611
612 ata_dev_printk(qc->dev, KERN_ERR, "command 0x%x timeout, "
613 "stat 0x%x host_stat 0x%x\n",
614 qc->tf.command, drv_stat, host_stat);
615
616 /* complete taskfile transaction */
617 qc->err_mask |= AC_ERR_TIMEOUT;
618 break;
619 }
620
621 spin_unlock_irqrestore(ap->lock, flags);
622
623 ata_eh_qc_complete(qc);
624
625 DPRINTK("EXIT\n");
626}
627
628/**
629 * ata_eng_timeout - Handle timeout of queued command
630 * @ap: Port on which timed-out command is active
631 *
632 * Some part of the kernel (currently, only the SCSI layer)
633 * has noticed that the active command on port @ap has not
634 * completed after a specified length of time. Handle this
635 * condition by disabling DMA (if necessary) and completing
636 * transactions, with error if necessary.
637 *
638 * This also handles the case of the "lost interrupt", where
639 * for some reason (possibly hardware bug, possibly driver bug)
640 * an interrupt was not delivered to the driver, even though the
641 * transaction completed successfully.
642 *
643 * TODO: kill this function once old EH is gone.
644 *
645 * LOCKING:
646 * Inherited from SCSI layer (none, can sleep)
647 */
648void ata_eng_timeout(struct ata_port *ap)
649{
650 DPRINTK("ENTER\n");
651
652 ata_qc_timeout(ata_qc_from_tag(ap, ap->link.active_tag));
653
654 DPRINTK("EXIT\n");
655}
656
657static int ata_eh_nr_in_flight(struct ata_port *ap) 562static int ata_eh_nr_in_flight(struct ata_port *ap)
658{ 563{
659 unsigned int tag; 564 unsigned int tag;