nbd: blk_mq_init_queue returns an error code on failure, not NULL
authorJeff Moyer <jmoyer@redhat.com>
Mon, 9 Jan 2017 20:20:31 +0000 (15:20 -0500)
committerJens Axboe <axboe@fb.com>
Tue, 10 Jan 2017 20:30:50 +0000 (13:30 -0700)
commit25b4acfc7de0fc4da3bfea3a316f7282c6fbde81
tree2a499c0910f948316a23003cacc43a29619299a5
parenta14d749fcebe97ddf6af6db3d1f6ece85c9ddcb9
nbd: blk_mq_init_queue returns an error code on failure, not NULL

Additionally, don't assign directly to disk->queue, otherwise
blk_put_queue (called via put_disk) will choke (panic) on the errno
stored there.

Bug found by code inspection after Omar found a similar issue in
virtio_blk.  Compile-tested only.

Signed-off-by: Jeff Moyer <jmoyer@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Reviewed-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
drivers/block/nbd.c