linux-kernel - [PATCH 02/10] pktcdvd: add error handling support for add

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Date:   Wed,  1 Sep 2021 14:00:20 -0700
From:   Luis Chamberlain <mcgrof@...nel.org>
To:     axboe@...nel.dk, bhelgaas@...gle.com, liushixin2@...wei.com,
        thunder.leizhen@...wei.com, lee.jones@...aro.org,
        geoff@...radead.org, mpe@...erman.id.au, benh@...nel.crashing.org,
        paulus@...ba.org, jim@...n.com, haris.iqbal@...os.com,
        jinpu.wang@...os.com, josh.h.morris@...ibm.com,
        pjk1939@...ux.ibm.com, tim@...erelk.net, richard@....at,
        miquel.raynal@...tlin.com, vigneshr@...com
Cc:     linux-mtd@...ts.infradead.org, linuxppc-dev@...ts.ozlabs.org,
        linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        Luis Chamberlain <mcgrof@...nel.org>
Subject: [PATCH 02/10] pktcdvd: add error handling support for add_disk()

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

The out_mem2 error label already does what we need so
re-use that.

Signed-off-by: Luis Chamberlain <mcgrof@...nel.org>
---
 drivers/block/pktcdvd.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index 0f26b2510a75..415248962e67 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -2729,7 +2729,9 @@ static int pkt_setup_dev(dev_t dev, dev_t* pkt_dev)
 	/* inherit events of the host device */
 	disk->events = pd->bdev->bd_disk->events;
 
-	add_disk(disk);
+	ret = add_disk(disk);
+	if (ret)
+		goto out_mem2;
 
 	pkt_sysfs_dev_new(pd);
 	pkt_debugfs_dev_new(pd);
-- 
2.30.2