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| author | Tejun Heo <htejun@gmail.com> | 2006-05-31 18:28:01 +0900 |
|---|---|---|
| committer | Tejun Heo <htejun@gmail.com> | 2006-05-31 18:28:01 +0900 |
| commit | 0ea035a3d1ad948096e205f08f350c03d5cea453 (patch) | |
| tree | fd003f929ab079f0852e3709436ca30a18265a39 /drivers/scsi/libata-eh.c | |
| parent | e8e008e7b5ed8c65675cc9b3e778b8bb909f65ab (diff) | |
| download | lwn-0ea035a3d1ad948096e205f08f350c03d5cea453.tar.gz lwn-0ea035a3d1ad948096e205f08f350c03d5cea453.zip | |
[PATCH] libata-hp: implement ata_eh_detach_dev()
Implement ata_eh_detach_dev(). This function is responsible for
detaching an ATA device and offlining the associated SCSI device
atomically so that the detached device is not accessed after ATA
detach is complete.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Diffstat (limited to 'drivers/scsi/libata-eh.c')
| -rw-r--r-- | drivers/scsi/libata-eh.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/scsi/libata-eh.c b/drivers/scsi/libata-eh.c index 8ecb8424d7ba..a049bffdf770 100644 --- a/drivers/scsi/libata-eh.c +++ b/drivers/scsi/libata-eh.c @@ -667,6 +667,34 @@ void ata_eh_qc_retry(struct ata_queued_cmd *qc) } /** + * ata_eh_detach_dev - detach ATA device + * @dev: ATA device to detach + * + * Detach @dev. + * + * LOCKING: + * None. + */ +static void ata_eh_detach_dev(struct ata_device *dev) +{ + struct ata_port *ap = dev->ap; + unsigned long flags; + + ata_dev_disable(dev); + + spin_lock_irqsave(&ap->host_set->lock, flags); + + dev->flags &= ~ATA_DFLAG_DETACH; + + if (ata_scsi_offline_dev(dev)) { + dev->flags |= ATA_DFLAG_DETACHED; + ap->flags |= ATA_FLAG_SCSI_HOTPLUG; + } + + spin_unlock_irqrestore(&ap->host_set->lock, flags); +} + +/** * ata_eh_about_to_do - about to perform eh_action * @ap: target ATA port * @action: action about to be performed |