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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-scsi.c | |
| parent | e8e008e7b5ed8c65675cc9b3e778b8bb909f65ab (diff) | |
| download | linux-3.10-0ea035a3d1ad948096e205f08f350c03d5cea453.tar.gz linux-3.10-0ea035a3d1ad948096e205f08f350c03d5cea453.tar.bz2 linux-3.10-0ea035a3d1ad948096e205f08f350c03d5cea453.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-scsi.c')
| -rw-r--r-- | drivers/scsi/libata-scsi.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c index da9689b7082..3dc6188af0e 100644 --- a/drivers/scsi/libata-scsi.c +++ b/drivers/scsi/libata-scsi.c @@ -2762,3 +2762,27 @@ void ata_scsi_scan_host(struct ata_port *ap) } } } + +/** + * ata_scsi_offline_dev - offline attached SCSI device + * @dev: ATA device to offline attached SCSI device for + * + * This function is called from ata_eh_hotplug() and responsible + * for taking the SCSI device attached to @dev offline. This + * function is called with host_set lock which protects dev->sdev + * against clearing. + * + * LOCKING: + * spin_lock_irqsave(host_set lock) + * + * RETURNS: + * 1 if attached SCSI device exists, 0 otherwise. + */ +int ata_scsi_offline_dev(struct ata_device *dev) +{ + if (dev->sdev) { + scsi_device_set_state(dev->sdev, SDEV_OFFLINE); + return 1; + } + return 0; +} |