libata: don't whine if ->prereset() returns -ENOENT
->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>
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@ -1625,8 +1625,14 @@ static int ata_eh_reset(struct ata_port *ap, int classify,
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rc = prereset(ap);
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if (rc) {
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if (rc == -ENOENT) {
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ata_port_printk(ap, KERN_DEBUG, "port disabled. ignoring.\n");
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ata_port_printk(ap, KERN_DEBUG,
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"port disabled. ignoring.\n");
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ap->eh_context.i.action &= ~ATA_EH_RESET_MASK;
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for (i = 0; i < ATA_MAX_DEVICES; i++)
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classes[i] = ATA_DEV_NONE;
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rc = 0;
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} else
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ata_port_printk(ap, KERN_ERR,
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"prereset failed (errno=%d)\n", rc);
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