Merge tag 'block-5.14-2021-08-07' of git://git.kernel.dk/linux-block

[linux-2.6-microblaze.git] / block / blk-iolatency.c

diff --git a/block/blk-iolatency.c b/block/blk-iolatency.c
index 81be009..d8b0d8b 100644 (file)
--- a/block/blk-iolatency.c
+++ b/block/blk-iolatency.c
@@ -833,7 +833,11 @@ static ssize_t iolatency_set_limit(struct kernfs_open_file *of, char *buf,
 
        enable = iolatency_set_min_lat_nsec(blkg, lat_val);
        if (enable) {
-               WARN_ON_ONCE(!blk_get_queue(blkg->q));
+               if (!blk_get_queue(blkg->q)) {
+                       ret = -ENODEV;
+                       goto out;
+               }
+
                blkg_get(blkg);
        }