[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>
diff --git a/drivers/scsi/libata-eh.c b/drivers/scsi/libata-eh.c
index 8ecb842..a049bff 100644
--- a/drivers/scsi/libata-eh.c
+++ b/drivers/scsi/libata-eh.c
@@ -667,6 +667,34 @@
}
/**
+ * 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
