diff mbox series

[v4,6/6] nbd: add error handling support for add_disk()

Message ID 20210927215958.1062466-7-mcgrof@kernel.org (mailing list archive)
State Not Applicable, archived
Delegated to: Mike Snitzer
Headers show
Series block: first batch of add_disk() error handling conversions | expand

Commit Message

Luis Chamberlain Sept. 27, 2021, 9:59 p.m. UTC 
We never checked for errors on add_disk() as this function
returned void. Now that this is fixed, use the shiny new
error handling.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
---
 drivers/block/nbd.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

Comments

Jens Axboe Sept. 27, 2021, 10:28 p.m. UTC | #1 
On 9/27/21 3:59 PM, Luis Chamberlain wrote:
> We never checked for errors on add_disk() as this function
> returned void. Now that this is fixed, use the shiny new
> error handling.

Applied, thanks.
diff mbox series

Patch

diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 5170a630778d..741365295157 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -1757,7 +1757,9 @@  static struct nbd_device *nbd_dev_add(int index, unsigned int refs)
 	disk->fops = &nbd_fops;
 	disk->private_data = nbd;
 	sprintf(disk->disk_name, "nbd%d", index);
-	add_disk(disk);
+	err = add_disk(disk);
+	if (err)
+		goto out_err_disk;
 
 	/*
 	 * Now publish the device.
@@ -1766,6 +1768,8 @@  static struct nbd_device *nbd_dev_add(int index, unsigned int refs)
 	nbd_total_devices++;
 	return nbd;
 
+out_err_disk:
+	blk_cleanup_disk(disk);
 out_free_idr:
 	mutex_lock(&nbd_index_mutex);
 	idr_remove(&nbd_index_idr, index);