block, blk-sysfs: Fix an err return path in blk_register_queue()

commit ed5302d3c25006a9edc7a7fbea97a30483f89ef7 upstream.

We do not call blk_trace_remove_sysfs() in err return path
if kobject_add() fails. This path fixes it.

Signed-off-by: Liu Yuan <tailai.ly@taobao.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
index 8a6d81afb284ebbf7111653393b6594d91924491..bb9c5ea9ca6ceaf6c942e72d373d80b483de8017 100644 (file)
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -440,8 +440,10 @@ int blk_register_queue(struct gendisk *disk)
                return ret;
 
        ret = kobject_add(&q->kobj, kobject_get(&dev->kobj), "%s", "queue");
-       if (ret < 0)
+       if (ret < 0) {
+               blk_trace_remove_sysfs(dev);
                return ret;
+       }
 
        kobject_uevent(&q->kobj, KOBJ_ADD);