@@ -1979,3 +1979,28 @@ void scsi_forget_host(struct Scsi_Host *shost)
spin_unlock_irqrestore(shost->host_lock, flags);
}
+struct scsi_device *scsi_get_dev(struct device *parent, int channel, uint id, u64 lun)
+{
+ struct Scsi_Host *shost = dev_to_shost(parent);
+ struct scsi_device *sdev = NULL;
+ struct scsi_target *starget;
+
+ mutex_lock(&shost->scan_mutex);
+ if (!scsi_host_scan_allowed(shost))
+ goto out;
+
+ starget = scsi_alloc_target(parent, channel, id);
+ if (!starget)
+ goto out;
+
+ sdev = scsi_alloc_sdev(starget, lun, NULL);
+ if (sdev)
+ sdev->borken = 0;
+ else
+ scsi_target_reap(starget);
+ put_device(&starget->dev);
+ out:
+ mutex_unlock(&shost->scan_mutex);
+ return sdev;
+}
+EXPORT_SYMBOL(scsi_get_dev);
@@ -787,6 +787,10 @@ void scsi_host_busy_iter(struct Scsi_Host *,
struct class_container;
+
+extern struct scsi_device *scsi_get_dev(struct device *parent, int channel,
+ uint id, u64 lun);
+
/*
* DIF defines the exchange of protection information between
* initiator and SBC block device.
Add a function which allows us to alloc a sdev with configurable device parent, and channel:id:lun This is useful for separating adding a scsi device into separate alloc and scan steps Signed-off-by: John Garry <john.garry@huawei.com> --- drivers/scsi/scsi_scan.c | 25 +++++++++++++++++++++++++ include/scsi/scsi_host.h | 4 ++++ 2 files changed, 29 insertions(+)