diff options
author | Jeff Garzik <jeff@garzik.org> | 2007-12-01 16:18:56 -0500 |
---|---|---|
committer | Jeff Garzik <jeff@garzik.org> | 2007-12-01 16:18:56 -0500 |
commit | c99da91e7a12724127475a85cc7a38214b3504e2 (patch) | |
tree | de0eb3fe32ce58804457963fd133a53bb8fba5b8 /drivers/ata/libata-eh.c | |
parent | a31e23e15cbb9734c5883a4a7f58d8712d303e0b (diff) | |
parent | 92d499d991ec4f5cbd00d6f33967eab9d3ee8d6c (diff) |
Merge branch 'master' into upstream-fixes
Diffstat (limited to 'drivers/ata/libata-eh.c')
-rw-r--r-- | drivers/ata/libata-eh.c | 95 |
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 | */ | ||
582 | static 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 | */ | ||
648 | void 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 | |||
657 | static int ata_eh_nr_in_flight(struct ata_port *ap) | 562 | static int ata_eh_nr_in_flight(struct ata_port *ap) |
658 | { | 563 | { |
659 | unsigned int tag; | 564 | unsigned int tag; |