[PATCH 08/10] dm: add add_disk() error handling

From: Luis Chamberlain
Date: Mon Aug 23 2021 - 16:31:10 EST


We never checked for errors on add_disk() as this function
returned void. Now that this is fixed, use the shiny new
error handling.

Signed-off-by: Luis Chamberlain <mcgrof@xxxxxxxxxx>
---
drivers/md/dm.c | 16 +++++++++++-----
1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 7981b7287628..cd26fde4ab56 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -2077,15 +2077,21 @@ int dm_setup_md_queue(struct mapped_device *md, struct dm_table *t)
if (r)
return r;

- add_disk(md->disk);
+ r = add_disk(md->disk);
+ if (r)
+ goto out_cleanup_disk;

r = dm_sysfs_init(md);
- if (r) {
- del_gendisk(md->disk);
- return r;
- }
+ if (r)
+ goto out_del_gendisk;
md->type = type;
return 0;
+
+out_cleanup_disk:
+ blk_cleanup_disk(md->disk);
+out_del_gendisk:
+ del_gendisk(md->disk);
+ return r;
}

struct mapped_device *dm_get_md(dev_t dev)
--
2.30.2