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libata: clear saved xfer_mode and ncq_enabled on device detach

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libata EH saves xfer_mode and ncq_enabled at start to later set
DUBIOUS_XFER flag if it has changed.  These values need to be cleared
on device detach such that hot device swap doesn't accidentally miss
DUBIOUS_XFER.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Tejun Heo 2008-10-26 15:43:03 +09:00 committed by Jeff Garzik
parent e8b3b5e9f5
commit 90484ebfc9
1 changed files with 4 additions and 1 deletions
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5
drivers/ata/libata-eh.c
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@ -1164,6 +1164,7 @@ void ata_eh_detach_dev(struct ata_device *dev)
{
struct ata_link *link = dev->link;
struct ata_port *ap = link->ap;
struct ata_eh_context *ehc = &link->eh_context;
unsigned long flags;
ata_dev_disable(dev);
@ -1177,9 +1178,11 @@ void ata_eh_detach_dev(struct ata_device *dev)
ap->pflags |= ATA_PFLAG_SCSI_HOTPLUG;
}
/* clear per-dev EH actions */
/* clear per-dev EH info */
ata_eh_clear_action(link, dev, &link->eh_info, ATA_EH_PERDEV_MASK);
ata_eh_clear_action(link, dev, &link->eh_context.i, ATA_EH_PERDEV_MASK);
ehc->saved_xfer_mode[dev->devno] = 0;
ehc->saved_ncq_enabled &= ~(1 << dev->devno);
spin_unlock_irqrestore(ap->lock, flags);
}