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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>
This commit is contained in:
Sudip Mukherjee 2014-10-23 22:16:48 +05:30 committed by Jens Axboe
parent 84ce0f0e94
commit d32f6b5752
1 changed files with 3 additions and 1 deletions
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4
block/elevator.c
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@ -229,7 +229,9 @@ int elevator_init(struct request_queue *q, char *name)
} }
err = e->ops.elevator_init_fn(q, e); err = e->ops.elevator_init_fn(q, e);
return 0; if (err)
elevator_put(e);
return err;
} }
EXPORT_SYMBOL(elevator_init); EXPORT_SYMBOL(elevator_init);