block: get rid of unnecessary local variable

Since whole elevator register is protectd by sysfs_lock, we
don't need extras 'has_elevator'. Just use q->elevator directly.

Signed-off-by: Yufen Yu <yuyufen@huawei.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
index e35eb1a05ad23c1ebf964a5520f524467acc66e2..bdc8cf5756549235a242ede73c2f88f8b176e790 100644 (file)
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -833,7 +833,6 @@ int blk_register_queue(struct gendisk *disk)
        int ret;
        struct device *dev = disk_to_dev(disk);
        struct request_queue *q = disk->queue;
-       bool has_elevator = false;
 
        if (WARN_ON(!q))
                return -ENXIO;
@@ -899,7 +898,6 @@ int blk_register_queue(struct gendisk *disk)
                        kobject_put(&dev->kobj);
                        return ret;
                }
-               has_elevator = true;
        }
 
        blk_queue_flag_set(QUEUE_FLAG_REGISTERED, q);
@@ -908,7 +906,7 @@ int blk_register_queue(struct gendisk *disk)
 
        /* Now everything is ready and send out KOBJ_ADD uevent */
        kobject_uevent(&q->kobj, KOBJ_ADD);
-       if (has_elevator)
+       if (q->elevator)
                kobject_uevent(&q->elevator->kobj, KOBJ_ADD);
        mutex_unlock(&q->sysfs_lock);