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libata: don't whine if ->prereset() returns -ENOENT

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->prereset() returns -ENOENT to tell libata that the port is empty and
reset sequencing should be stopped.  This is not an error condition.
Update ata_eh_reset() such that it sets device classes to ATA_DEV_NONE
and return success in on -ENOENT.  This makes spurious error message
go away.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo 2007-03-12 17:24:08 +09:00 committed by Jeff Garzik
parent 5851fadce8
commit 4aa9ab67fb
1 changed files with 7 additions and 1 deletions
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8
drivers/ata/libata-eh.c
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@ -1625,8 +1625,14 @@ static int ata_eh_reset(struct ata_port *ap, int classify,
rc = prereset(ap);
if (rc) {
if (rc == -ENOENT) {
ata_port_printk(ap, KERN_DEBUG, "port disabled. ignoring.\n");
ata_port_printk(ap, KERN_DEBUG,
"port disabled. ignoring.\n");
ap->eh_context.i.action &= ~ATA_EH_RESET_MASK;
for (i = 0; i < ATA_MAX_DEVICES; i++)
classes[i] = ATA_DEV_NONE;
rc = 0;
} else
ata_port_printk(ap, KERN_ERR,
"prereset failed (errno=%d)\n", rc);