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[PATCH] libata: implement ATA_FLAG_IN_EH port flag 

ATA_FLAG_IN_EH flag is set on entry to EH and cleared on completion.
This patch just sets and clears the flag.  Following patches will
build normal qc execution / EH synchronization aroung this flag.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
This commit is contained in:
Tejun Heo 2006-02-02 00:56:10 +09:00 committed by Jeff Garzik
parent 725b2805fd
commit dde44589bf
2 changed files with 11 additions and 0 deletions
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9
drivers/scsi/libata-scsi.c
View File

@ -735,6 +735,11 @@ int ata_scsi_error(struct Scsi_Host *host)
DPRINTK("ENTER\n");
spin_lock_irqsave(&ap->host_set->lock, flags);
assert(!(ap->flags & ATA_FLAG_IN_EH));
ap->flags |= ATA_FLAG_IN_EH;
spin_unlock_irqrestore(&ap->host_set->lock, flags);
ap = (struct ata_port *) &host->hostdata[0];
ap->ops->eng_timeout(ap);
@ -742,6 +747,10 @@ int ata_scsi_error(struct Scsi_Host *host)
scsi_eh_flush_done_q(&ap->eh_done_q);
spin_lock_irqsave(&ap->host_set->lock, flags);
ap->flags &= ~ATA_FLAG_IN_EH;
spin_unlock_irqrestore(&ap->host_set->lock, flags);
DPRINTK("EXIT\n");
return 0;
}

2
include/linux/libata.h
View File

@ -162,6 +162,8 @@ enum {
ATA_FLAG_PIO_LBA48 = (1 << 13), /* Host DMA engine is LBA28 only */
ATA_FLAG_IRQ_MASK = (1 << 14), /* Mask IRQ in PIO xfers */
ATA_FLAG_IN_EH = (1 << 15), /* EH in progress */
ATA_QCFLAG_ACTIVE = (1 << 1), /* cmd not yet ack'd to scsi lyer */
ATA_QCFLAG_SG = (1 << 3), /* have s/g table? */
ATA_QCFLAG_SINGLE = (1 << 4), /* no s/g, just a single buffer */