This bug was present as of 2.6.9-bk7, apparently introduced along with the
addition of SCSI targets into sysfs.  The code takes a reference to the
host for each initialized sdev but only drops a reference when each
target is released.  As you might expect, this causes a refcount leak
whenever a target has more than 0 LUNs.

The patch changes things so that the reference is acquired when the target
is initialized, not when the sdev is initialized.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>