In 2.6.25 we started using class_find_child instead of implementing
our own loop and lookup. The problem is that class_find_child would get a
reference to the host's device, then scsi_host_lookup would get an extra
reference to it when it called scsi_host_get(). This patch drops the
ref from class_find_child because scsi_host_get gets a ref if the host
is not being removed.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>

--- linux-2.6.25.2/drivers/scsi/hosts.c	2008-05-06 18:21:32.000000000 -0500
+++ linux-2.6.25.2.work/drivers/scsi/hosts.c	2008-06-13 19:43:15.000000000 -0500
@@ -455,9 +455,10 @@ struct Scsi_Host *scsi_host_lookup(unsig
 	struct Scsi_Host *shost = ERR_PTR(-ENXIO);
 
 	cdev = class_find_child(&shost_class, &hostnum, __scsi_host_match);
-	if (cdev)
+	if (cdev) {
 		shost = scsi_host_get(class_to_shost(cdev));
-
+		class_device_put(cdev);
+	}
 	return shost;
 }
 EXPORT_SYMBOL(scsi_host_lookup);