block: fix wrong error return in elevator_init()
while compiling integer err was showing as a set but unused variable.
elevator_init_fn can be either cfq_init_queue or deadline_init_queue
or noop_init_queue.
all three of these functions are returning -ENOMEM if they fail to
allocate the queue.
so we should actually be returning the error code rather than
returning 0 always.
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/block/elevator.c b/block/elevator.c
index 24c28b6..afa3b03 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -229,7 +229,9 @@
}
err = e->ops.elevator_init_fn(q, e);
- return 0;
+ if (err)
+ elevator_put(e);
+ return err;
}
EXPORT_SYMBOL(elevator_init);