[SCSI] bsg: fix bsg_unregister_queue

scsi_sysfs_add_sdev ignores the bsg_register_queue failure, so bsg_unregister_queue must check whether the queue has a bsg device. Signed-off-by: FUJITA Tomonori <[email protected]> Signed-off-by: James Bottomley <[email protected]>
gunnarahlberg · Jul 21, 2007 · df46882 · df46882
1 parent 39dca55
commit df46882
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/block/bsg.c b/block/bsg.c
@@ -932,7 +932,8 @@ void bsg_unregister_queue(struct request_queue *q)
 {
 	struct bsg_class_device *bcd = &q->bsg_dev;
 
-	WARN_ON(!bcd->class_dev);
+	if (!bcd->class_dev)
+		return;
 
 	mutex_lock(&bsg_mutex);
 	sysfs_remove_link(&q->kobj, "bsg");