On 05/26/2017 01:38 AM, Bart Van Assche wrote:
> The code in blk-mq-debugfs.c assumes that it is working on a blk-mq
> queue and is not intended to work on a blk-sq queue. Hence only
> register blk-mq debugfs attributes for blk-mq queues.
>
> Fixes: commit 9c1051aacde8 ("blk-mq: untangle debugfs and sysfs")
> Signed-off-by: Bart Van Assche <bart.vanassche@xxxxxxxxxxx>
> Cc: Omar Sandoval <osandov@xxxxxx>
> Cc: Christoph Hellwig <hch@xxxxxx>
> Cc: Hannes Reinecke <hare@xxxxxxxx>
> Cc: Ming Lei <ming.lei@xxxxxxxxxx>
> ---
> block/blk-sysfs.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
> index 5e7b3924996c..0494baa743a3 100644
> --- a/block/blk-sysfs.c
> +++ b/block/blk-sysfs.c
> @@ -888,10 +888,10 @@ int blk_register_queue(struct gendisk *disk)
> goto unlock;
> }
>
> - if (q->mq_ops)
> + if (q->mq_ops) {
> __blk_mq_register_dev(dev, q);
> -
> - blk_mq_debugfs_register(q);
> + blk_mq_debugfs_register(q);
> + }
>
> kobject_uevent(&q->kobj, KOBJ_ADD);
>
>
Reviewed-by: Hannes Reinecke <hare@xxxxxxxx>
Cheers,
Hannes
--
Dr. Hannes Reinecke Teamlead Storage & Networking
hare@xxxxxxx +49 911 74053 688
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
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