On 10/23/2014 10:04 AM, Sudip Mukherjee wrote:
> 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 <su...@vectorindia.org>
> ---
>
> change in v2: added elevator_put
>
> block/elevator.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/block/elevator.c b/block/elevator.c
> index 24c28b6..1267c2b 100644
> --- a/block/elevator.c
> +++ b/block/elevator.c
> @@ -184,7 +184,7 @@ static void elevator_release(struct kobject *kobj)
> int elevator_init(struct request_queue *q, char *name)
> {
> struct elevator_type *e = NULL;
> - int err;
> + int err = 0;
Why init it to 0?
--
Jens Axboe
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