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libata-link: implement and use link/device iterators

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Multiple links and different number of devices per link should be
considered to iterate over links and devices.  This patch implements
and uses link and device iterators - ata_port_for_each_link() and
ata_link_for_each_dev() - and ata_link_max_devices().

This change makes a lot of functions iterate over only possible
devices instead of from dev 0 to dev ATA_MAX_DEVICES.  All such
changes have been examined and nothing should be broken.

While at it, add a separating comment before device helpers to
distinguish them better from link helpers and others.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo
2007-08-06 18:36:23 +09:00
committed by Jeff Garzik
parent 9af5c9c97d
commit f58229f806
13 changed files with 134 additions and 148 deletions
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6
drivers/ata/libata-acpi.c
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@@ -509,7 +509,7 @@ int ata_acpi_on_suspend(struct ata_port *ap)
*/
void ata_acpi_on_resume(struct ata_port *ap)
{
int i;
struct ata_device *dev;
if (ap->acpi_handle && (ap->pflags & ATA_PFLAG_GTM_VALID)) {
BUG_ON(ap->flags & ATA_FLAG_ACPI_SATA);
@@ -519,8 +519,8 @@ void ata_acpi_on_resume(struct ata_port *ap)
}
/* schedule _GTF */
for (i = 0; i < ATA_MAX_DEVICES; i++)
ap->link.device[i].flags |= ATA_DFLAG_ACPI_PENDING;
ata_link_for_each_dev(dev, &ap->link)
dev->flags |= ATA_DFLAG_ACPI_PENDING;
}
/**