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[PATCH] libata: reorganize ata_bus_probe()

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Now that reset and configure are converted such that they don't modify
or disable libata core data structures, reorganize ata_bus_probe() to
reflect this change.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo 2006-03-01 16:09:36 +09:00 committed by Jeff Garzik
parent 4b2f3ededc
commit 28ca5c57dc
1 changed files with 25 additions and 21 deletions
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46
drivers/scsi/libata-core.c
View file

@ -1211,35 +1211,40 @@ static int ata_dev_configure(struct ata_port *ap, struct ata_device *dev)
static int ata_bus_probe(struct ata_port *ap)
{
unsigned int i, found = 0;
unsigned int classes[ATA_MAX_DEVICES];
unsigned int i, rc, found = 0;
ata_port_probe(ap);
/* reset */
if (ap->ops->probe_reset) {
unsigned int classes[ATA_MAX_DEVICES];
int rc;
ata_port_probe(ap);
rc = ap->ops->probe_reset(ap, classes);
if (rc == 0) {
for (i = 0; i < ATA_MAX_DEVICES; i++) {
if (classes[i] == ATA_DEV_UNKNOWN)
classes[i] = ATA_DEV_NONE;
ap->device[i].class = classes[i];
}
} else {
printk(KERN_ERR "ata%u: probe reset failed, "
"disabling port\n", ap->id);
ata_port_disable(ap);
if (rc) {
printk("ata%u: reset failed (errno=%d)\n", ap->id, rc);
return rc;
}
} else
for (i = 0; i < ATA_MAX_DEVICES; i++)
if (classes[i] == ATA_DEV_UNKNOWN)
classes[i] = ATA_DEV_NONE;
} else {
ap->ops->phy_reset(ap);
if (ap->flags & ATA_FLAG_PORT_DISABLED)
goto err_out;
for (i = 0; i < ATA_MAX_DEVICES; i++) {
if (!(ap->flags & ATA_FLAG_PORT_DISABLED))
classes[i] = ap->device[i].class;
else
ap->device[i].class = ATA_DEV_UNKNOWN;
}
ata_port_probe(ap);
}
/* read IDENTIFY page and configure devices */
for (i = 0; i < ATA_MAX_DEVICES; i++) {
struct ata_device *dev = &ap->device[i];
dev->class = classes[i];
if (!ata_dev_present(dev))
continue;
@ -1257,7 +1262,7 @@ static int ata_bus_probe(struct ata_port *ap)
found = 1;
}
if ((!found) || (ap->flags & ATA_FLAG_PORT_DISABLED))
if (!found)
goto err_out_disable;
ata_set_mode(ap);
@ -1268,7 +1273,6 @@ static int ata_bus_probe(struct ata_port *ap)
err_out_disable:
ap->ops->port_disable(ap);
err_out:
return -1;
}