From: Christoph Hellwig <[email protected]>

blk_revalidate_disk_zones is never called for non-zoned devices.  Just
return early and warn instead of trying to handle this case.

Signed-off-by: Christoph Hellwig <[email protected]>
Signed-off-by: Damien Le Moal <[email protected]>
---
 block/blk-zoned.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/block/blk-zoned.c b/block/blk-zoned.c
index dae787f67019..523a28d7a15c 100644
--- a/block/blk-zoned.c
+++ b/block/blk-zoned.c
@@ -520,6 +520,9 @@ int blk_revalidate_disk_zones(struct gendisk *disk)
        sector_t sector = 0;
        int ret = 0;
 
+       if (WARN_ON_ONCE(!blk_queue_is_zoned(q)))
+               return -EIO;
+
        /*
         * BIO based queues do not use a scheduler so only q->nr_zones
         * needs to be updated so that the sysfs exposed value is correct.
@@ -535,10 +538,8 @@ int blk_revalidate_disk_zones(struct gendisk *disk)
         */
        noio_flag = memalloc_noio_save();
 
-       if (!blk_queue_is_zoned(q) || !nr_zones) {
-               nr_zones = 0;
+       if (!nr_zones)
                goto update;
-       }
 
        /* Allocate bitmaps */
        ret = -ENOMEM;
-- 
2.23.0

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