linux-kernel - [PATCH 04/10] nvdimm/btt: do not call del

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Message-Id: <20210827191809.3118103-5-mcgrof@kernel.org>
Date:   Fri, 27 Aug 2021 12:18:03 -0700
From:   Luis Chamberlain <mcgrof@...nel.org>
To:     axboe@...nel.dk, colyli@...e.de, kent.overstreet@...il.com,
        kbusch@...nel.org, sagi@...mberg.me, vishal.l.verma@...el.com,
        dan.j.williams@...el.com, dave.jiang@...el.com,
        ira.weiny@...el.com, konrad.wilk@...cle.com, roger.pau@...rix.com,
        boris.ostrovsky@...cle.com, jgross@...e.com,
        sstabellini@...nel.org, minchan@...nel.org, ngupta@...are.org,
        senozhatsky@...omium.org
Cc:     xen-devel@...ts.xenproject.org, nvdimm@...ts.linux.dev,
        linux-nvme@...ts.infradead.org, linux-bcache@...r.kernel.org,
        linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        Luis Chamberlain <mcgrof@...nel.org>
Subject: [PATCH 04/10] nvdimm/btt: do not call del_gendisk() if not needed

We know we don't need del_gendisk() if we haven't added
the disk, so just skip it. This should fix a bug on older
kernels, as del_gendisk() became able to deal with
disks not added only recently, after the patch titled
"block: add flag for add_disk() completion notation".

Signed-off-by: Luis Chamberlain <mcgrof@...nel.org>
---
 drivers/nvdimm/btt.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c
index 92dec4952297..3fd1bdb9fc05 100644
--- a/drivers/nvdimm/btt.c
+++ b/drivers/nvdimm/btt.c
@@ -1538,7 +1538,6 @@ static int btt_blk_init(struct btt *btt)
 		int rc = nd_integrity_init(btt->btt_disk, btt_meta_size(btt));
 
 		if (rc) {
-			del_gendisk(btt->btt_disk);
 			blk_cleanup_disk(btt->btt_disk);
 			return rc;
 		}
-- 
2.30.2