diff options
Diffstat (limited to 'block/blk-sysfs.c')
| -rw-r--r-- | block/blk-sysfs.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 9272452ff456..4a6a40ffd78e 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -921,6 +921,7 @@ unlock: mutex_unlock(&q->sysfs_lock); return ret; } +EXPORT_SYMBOL_GPL(blk_register_queue); void blk_unregister_queue(struct gendisk *disk) { @@ -929,6 +930,10 @@ void blk_unregister_queue(struct gendisk *disk) if (WARN_ON(!q)) return; + /* Return early if disk->queue was never registered. */ + if (!test_bit(QUEUE_FLAG_REGISTERED, &q->queue_flags)) + return; + /* * Protect against the 'queue' kobj being accessed * while/after it is removed. |