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[PATCH] libata: implement ATA_EHI_RESUME_LINK

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Implement ATA_EHI_RESUME_LINK, which indicates that the link needs to
be resumed.  This used to be implied by ATA_EHI_HOTPLUGGED.  However,
hotplug isn't the only event which requires link resume and separating
this out allows other places to request link resume.  This
differentiation also allows better debounce timing selection.

This patch converts user scan to use ATA_EHI_RESUME_LINK.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo
2006-07-03 16:07:26 +09:00
committed by Jeff Garzik
parent e30349d27e
commit 2832430435
3 changed files with 11 additions and 8 deletions
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15
drivers/scsi/libata-core.c
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@@ -2627,13 +2627,14 @@ int ata_std_prereset(struct ata_port *ap)
const unsigned long *timing;
int rc;
/* hotplug? */
if (ehc->i.flags & ATA_EHI_HOTPLUGGED) {
if (ap->flags & ATA_FLAG_HRST_TO_RESUME)
ehc->i.action |= ATA_EH_HARDRESET;
if (ap->flags & ATA_FLAG_SKIP_D2H_BSY)
ata_wait_spinup(ap);
}
/* handle link resume & hotplug spinup */
if ((ehc->i.flags & ATA_EHI_RESUME_LINK) &&
(ap->flags & ATA_FLAG_HRST_TO_RESUME))
ehc->i.action |= ATA_EH_HARDRESET;
if ((ehc->i.flags & ATA_EHI_HOTPLUGGED) &&
(ap->flags & ATA_FLAG_SKIP_D2H_BSY))
ata_wait_spinup(ap);
/* if we're about to do hardreset, nothing more to do */
if (ehc->i.action & ATA_EH_HARDRESET)