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Date: Thu, 23 Oct 2014 22:16:48 +0530 From: Sudip Mukherjee <sudipm.mukherjee@...il.com> To: Jens Axboe <axboe@...nel.dk> Cc: Sudip Mukherjee <sudipm.mukherjee@...il.com>, linux-kernel@...r.kernel.org Subject: [PATCH v3] block: wrong return value 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@...torindia.org> --- change in v2: added elevator_put change in v3: remove unneeded initialization of err block/elevator.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) 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 @@ int elevator_init(struct request_queue *q, char *name) } err = e->ops.elevator_init_fn(q, e); - return 0; + if (err) + elevator_put(e); + return err; } EXPORT_SYMBOL(elevator_init); -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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